{"id":497,"date":"2018-10-26T21:59:20","date_gmt":"2018-10-26T21:59:20","guid":{"rendered":"http:\/\/feralpacket.org\/?p=497"},"modified":"2018-10-26T21:59:20","modified_gmt":"2018-10-26T21:59:20","slug":"mpls-traffic-engineering-mpls-te-notes","status":"publish","type":"post","link":"https:\/\/feralpacket.org\/?p=497","title":{"rendered":"MPLS Traffic Engineering (MPLS TE) Notes"},"content":{"rendered":"

MPLS Traffic Engineering (MPLS TE)<\/span><\/p>\n

\n– This mechanism allows for a predefined route from source to destination<\/p>\n

\n– It can use a path that meets the interface property requirements<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Bandwidth<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Delay\n<\/p>\n

\nStarting point<\/p>\n

\n– MPLS tunnel head end\n<\/p>\n

\nEnd point<\/p>\n

\n– MPLS tunnel tail end\n<\/p>\n

\nTE Components<\/span><\/p>\n

\n1. Interface constraints<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Bandwidth<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Delay<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Jitter\n<\/p>\n

\n2. Link state routing protocol<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> To advertise the link constaints\n<\/p>\n

\n3. Algorithm<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> To calculate the best routes according to tunnel requirements of interface constraints<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> PCALC<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Path Calculation<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> OSPF constraint-based SPF\n<\/p>\n

\n4. Tunnel signaling<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> The process of requesting and receiving MPLS labels<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Resource Reservation Protocol\n<\/p>\n

\n5. Fowarding traffic over the tunnel\n<\/p>\n

\nInterface Constraints<\/p>\n

\n– Max bandwidth<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 # bandwidth <kbps><\/span><\/span><\/p>\n

\n– Max reservable bandwidth<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 # ip rsvp bandwidth <kbps><\/span><\/span><\/p>\n

\n– Available bandwidth<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Variable which the router calculates<\/p>\n

\n– Administrative groups<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Optional<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> 32 bit value used to define other attributes<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Delay<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Jitter\n<\/p>\n

\nR1(config)# mpls traffic-eng tunnels<\/span><\/span><\/p>\n

\nint fa0\/0<\/span><\/span><\/p>\n

\n\u00a0 bandwidth <kbps><\/span><\/span><\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> all interfaces have to set<\/p>\n

\n\u00a0 mpls traffic-eng tunnels<\/span><\/span><\/p>\n

\n\u00a0 ip rsvp bandwidth <kbps><\/span><\/span><\/p>\n

\n\u00a0 mpls traffic-eng administrative-group <value in hex><\/span><\/span>\n<\/p>\n

\nRouting Protocols<\/span><\/p>\n

\n– OSPF and IS-IS can be used<\/p>\n

\n– OSPF<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Opaque LSAs 9, 10, and 11 are used<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> LSA 9<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Link-local<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> LSA 10<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Area-local<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Intra-area MPLS-TE<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> LSA 11<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Domain-local<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Inter-area MPLS-TE<\/p>\n

\n– IS-IS<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Introduces two new TVLs<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Extended IS Reachability<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Extended IP Reachability\n<\/p>\n

\nOSPF<\/span><\/p>\n

\n– On all routers\n<\/p>\n

\n(config)# router ospf 1<\/span><\/span><\/p>\n

\nmpls traffic-eng router-id lo0<\/span><\/span><\/p>\n

\nmpls traffic-end area 0<\/span><\/span>\n<\/p>\n

\nIS-IS<\/span><\/p>\n

\n– On all routers\n<\/p>\n

\n(config)# router isis ABC<\/span><\/span><\/p>\n

\nmpls traffic-eng router lo0<\/span><\/span><\/p>\n

\nmpls traffic-eng level-2<\/span><\/span>\n<\/p>\n

\nRSVP<\/p>\n

\n– RSVP Path Message<\/p>\n

\n– RSVP Reserve Message\n<\/p>\n

\nExplicit Router Object (ERO)<\/p>\n

\n– Headend router sends path message with the ERO in the message<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> ERO contains a collection of next-hops to be used<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> 16.0.0.1<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> 13.0.0.3<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> 34.0.0.4<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> 45.0.0.5\n<\/p>\n

\nWhen any router receives the path message, it checks the ERO and removes its own IP address and sends the message to the next-hop\n<\/p>\n

\nThe path message also contains the bandwidth requirement of the tunnel\n<\/p>\n

\nWhen the path message reaches the tailend router, the tailend router generates a RESV message that contains the label to be used<\/p>\n

\n– Each router that receives the RESV message changes the message with its generated label to be used<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> RSVP label, not an MPLS label\n<\/p>\n

\nHeadend Tunnel Configuration<\/span><\/p>\n

\n– Tunnel IP address<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Unnumbered<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Linked to a loopback interface<\/p>\n

\n– Destination IP address<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Router-id of the tailend router<\/p>\n

\n– Bandwidth required<\/p>\n

\n– Path options<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Manual<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Explicit path<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Dynamic<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> PCALC<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> SPF<\/p>\n

\n– Setup and holding priorities<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Tunnel parameters<\/p>\n

\n– Affinity<\/p>\n

\n– Tunnel metric<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> IGP<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> TE\n<\/p>\n

\nR6 (headend) -> R1 -> R3 -> R4 -> R5 (tailend)\n<\/p>\n

\nR6(config)# int tu0<\/span><\/span><\/p>\n

\nunnumbered lo0<\/span><\/span><\/p>\n

\ntunnel mode mpls traffic-eng<\/span><\/span><\/p>\n

\ntunnel destination 5.5.5.5<\/span><\/span><\/p>\n

\ntunnel mpls traffic-eng bandwidth <kbps><\/span><\/span><\/p>\n

\ntunnel mpls traffic-eng path-option explicit name <name><\/span><\/span><\/p>\n

\nip explicit-path name <name> enable<\/span><\/span><\/p>\n

\nnext-address 16.0.0.1<\/span><\/span><\/p>\n

\nnext-address 13.0.0.3<\/span><\/span><\/p>\n

\nnext-address 34.0.0.4<\/span><\/span><\/p>\n

\nnext-address 45.0.0.5<\/span><\/span>\n<\/p>\n

\nshow mpls traffic-eng tunnels [name]<\/span><\/span>\n<\/p>\n

\nPath Option Priority<\/span><\/p>\n

\n– Multiple path-option commands can be configured for some tunnel with different priority value<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> 1 to 1000<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Priority<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Lower value<\/p>\n

<\/p>\n

\nScenario -><\/p>\n

\n– Configure MPLS TE on all routers to support max reservable bandwidth 2Mbps<\/p>\n

\n– Configure OSPF area 0<\/p>\n

\n– Configure an MPLS TE tunnel from R1 to R3 with 1Mbps bandwidth requirement<\/p>\n

\n– Use dynamic path option\n<\/p>\n

\nR1(config)# mpls traffic-eng tunnels<\/span><\/span><\/p>\n

\nint fa0\/0<\/span><\/span><\/p>\n

\n\u00a0 mpls traffic-eng tunnels<\/span><\/span><\/p>\n

\n\u00a0 ip rsvp bandwidth 2000<\/span><\/span><\/p>\n

\nrouter ospf 1<\/span><\/span><\/p>\n

\nnetwork 12.0.0.1 0.0.0.0 area 0<\/span><\/span><\/p>\n

\nnetwork 1.1.1.1 0.0.0.0 area 0<\/span><\/span><\/p>\n

\nmpls traffic-eng router-id lo0<\/span><\/span><\/p>\n

\nmpls traffic-eng area 0<\/span><\/span><\/p>\n

\nint tu0<\/span><\/span><\/p>\n

\nip unnumbered lo0<\/span><\/span><\/p>\n

\ntunnel mode mpls traffic-eng<\/span><\/span><\/p>\n

\ntunnel destination 3.3.3.3<\/span><\/span><\/p>\n

\ntunnel mpls traffic-eng bandwidth 1000<\/span><\/span><\/p>\n

\ntunnel mpls traffic-eng path-options 1 dynamic<\/span><\/span>\n<\/p>\n

\nPath Option Exclude Address<\/span>\n<\/p>\n

\nR1(config)# ip explicit-path name NOR3 enable<\/span><\/span><\/p>\n

\nexclude-address 3.3.3.3<\/span><\/span><\/p>\n

\ntunnel mpls traffic-eng path-option 1 explicit name NOR3<\/span><\/span>\n<\/p>\n

\nAffinity and Administrative Group<\/span>\n<\/p>\n

\nTunnel interface<\/p>\n

\n– Affinity<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Requirement<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> 32 bit variable in HEX<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> 0x00000000\n<\/p>\n

\nOn any other router in the path, administrative group a a viable resource<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> 32 bit variable in HEX<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> 0x0000FFFF\n<\/p>\n

\nOn headend router\n<\/p>\n

\nint tu0<\/span><\/span><\/p>\n

\ntunnel mpls traffic-eng affinity 0x01000000 mask 0x0000FFFF<\/span><\/span>\n<\/p>\n

\nOn all of the interfaces of routers in the path\n<\/p>\n

\nR2(config)# int g0\/0\/0\/0<\/span><\/span><\/p>\n

\nmpls traffic-eng attribute-flag 0x01000000<\/span><\/span>\n<\/p>\n

\nSetup and Holding Priorities<\/span><\/p>\n

\n– Every tunnel is assigned two priorities<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Setup Priority<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Decides whether a tunnel can ask for specific bandwidth or not in case bandwidth is already assigned to another tunnel<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Preemptive<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> 0 – 7 (lower is better)<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Holding Priority<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Decides whether a tunnel can still reserve the bandwidth in cast another tunnel is requesting bandwidth<\/p>\n

\n– Setup priority cannot be lower than holding priority\n<\/p>\n

\nHeadend Router<\/p>\n

\nint tu0<\/span><\/span><\/p>\n

\n\u00a0 tunnel mpls traffic-eng priority <setup> <holding><\/span><\/span>\n<\/p>\n

\nRe-Optimization<\/span><\/p>\n

\n– When new links or more resources are available<\/p>\n

\n– 3 ways to re-optimize<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Periodic<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 # mpls traffic-eng reoptimize timers frequency <minutes><\/span><\/span><\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Event Driven<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 # mpls traffic-ing reoptimize event linkup<\/span><\/span><\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Manual<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 # mpls traffic-eng reoptimize [tunnel <number>]<\/span><\/span>\n<\/p>\n

\nRSVP<\/span><\/p>\n

\n– Tailend router uses explicit null<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> But penultimate router consider it as implicit null<\/p>\n

\n– On penultimate router (hidden command)<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 # mpls traffic-eng signalling interpret explicit-null<\/span><\/span>\n<\/p>\n

\nForwarding Traffic over Tunnel Interface<\/span><\/p>\n

<\/p>\n

\n1. Static route\n<\/p>\n

\nR1(config)# ip route 50.0.0.0 255.0.0.0 tu1<\/span><\/span>\n<\/p>\n

\n2. Policy Based Routing (PBR)<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 – Scenario -> Traffic from R6 shoulduse tunnel 1 and traffic from R7 should use tunnel 2\n<\/p>\n

\nR1(config)# route-map MAP1<\/span><\/span><\/p>\n

\nset interface tu1<\/span><\/span><\/p>\n

\nroute-map MAP2<\/span><\/span><\/p>\n

\nset interface tu2<\/span><\/span><\/p>\n

\nint fa0\/0<\/span><\/span><\/p>\n

\nip policy route-map MAP1<\/span><\/span><\/p>\n

\nint fa0\/1<\/span><\/span><\/p>\n

\nip policy route-map MAP2<\/span><\/span>\n<\/p>\n

\n3. Autoroute Announce<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> The tunnel is included in SPF calculation as a valid exit interface<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> All of the up stream network connected to the tailend router will have tunnel as the exit interface<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> If multiple tunnels are available, then the nearest TE router to the destination is used as the exit interface\n<\/p>\n

\n(config)# int tu1<\/span><\/span><\/p>\n

\ntunnel mpls traffic-eng autoroute-announce<\/span><\/span>\n<\/p>\n

\nForwading Adjacency<\/span><\/p>\n

\n– The tunnel is considered as a single link<\/p>\n

\n– All of the non-TE enabled routers will also consider the link when calculating best path<\/p>\n

\n– The tunnels must be two way to be considered a link<\/p>\n

<\/p>\n

\nOn the Headend Routers\n<\/p>\n

\n(route)# int tu1<\/span><\/span><\/p>\n

\ntunnel mpls traffic-eng forwarding-adjacency<\/span><\/span>\n<\/p>\n

\nMPLS TE on XR Routers<\/span>\n<\/p>\n

\n1. On all routers, activate MPLS TE<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> for interfaces<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> routing protocols<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> RSVP max reservable bandwidth\n<\/p>\n

\n2. To configure tunnel interface on headend router<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> IOS\n<\/p>\n

\nrouter ospf 1<\/span><\/span><\/p>\n

\nmpls traffic-eng router-id lo0<\/span><\/span><\/p>\n

\nmpls traffic-eng area 0<\/span><\/span><\/p>\n

\nint fa0\/0<\/span><\/span><\/p>\n

\nmpls traffic-eng tunnels<\/span><\/span><\/p>\n

\nip rsvp bandwidth <kbps><\/span><\/span>\n<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> XR\n<\/p>\n

\nmpls traffic-eng<\/span><\/span><\/p>\n

\nint fa0\/0<\/span><\/span><\/p>\n

\nint s0\/0<\/span><\/span><\/p>\n

\nrsvp<\/span><\/span><\/p>\n

\nint fa0\/0<\/span><\/span><\/p>\n

\n\u00a0 bandwidth 50000<\/span><\/span><\/p>\n

\nint s0\/0<\/span><\/span><\/p>\n

\n\u00a0 bandwidth 50000<\/span><\/span><\/p>\n

\nrouter ospf 1<\/span><\/span><\/p>\n

\nmpls traffic-eng router-id lo0<\/span><\/span><\/p>\n

\narea 0<\/span><\/span><\/p>\n

\n\u00a0 mpls traffic-eng<\/span><\/span>\n<\/p>\n

\nIOS (attribute flag)\n<\/p>\n

\nint fa0\/0<\/span><\/span><\/p>\n

\nmpls traffic-eng attribute-flags 0x01000000<\/span><\/span>\n<\/p>\n

\nXR (attribute flag)\n<\/p>\n

\nmpls traffic-eng<\/span><\/span><\/p>\n

\nint fa0\/0<\/span><\/span><\/p>\n

\n\u00a0 attribute-flag 0x01000000<\/span><\/span>\n<\/p>\n

\nIOS (tunnel configuration)\n<\/p>\n

\nint tu1<\/span><\/span><\/p>\n

\nip unnumbered lo0<\/span><\/span><\/p>\n

\ntunnel mode mpls traffic-eng<\/span><\/span><\/p>\n

\ntunnel destination 3.3.3.3<\/span><\/span><\/p>\n

\ntunnel mpls traffic-eng bandwidth 5000<\/span><\/span><\/p>\n

\ntunnel mpls traffic-eng path-option 1 explicit name EXP1<\/span><\/span><\/p>\n

\nexit<\/span><\/span><\/p>\n

\nip explicit-path name EXP1 enable<\/span><\/span><\/p>\n

\nnext-address 12.0.0.2<\/span><\/span><\/p>\n

\nnext-address 23.0.0.3<\/span><\/span>\n<\/p>\n

\nXR (tunnel configuration)\n<\/p>\n

\nint tunnel-te 1<\/span><\/span><\/p>\n

\nipv4 unnumbered lo0<\/span><\/span><\/p>\n

\ndestination 3.3.3.3<\/span><\/span><\/p>\n

\nsignalled-bandwidth 5000<\/span><\/span><\/p>\n

\npath-option 1 explicit name EXP1<\/span><\/span><\/p>\n

\nexplicit-path name EXP1<\/span><\/span><\/p>\n

\nindex 10 next-address strict ipv4<\/span><\/span><\/p>\n

\n\u00a0 unicast 12.0.0.2<\/span><\/span><\/p>\n

\nindex 20 next-address strict ipv4<\/span><\/span><\/p>\n

\n\u00a0 unicast 23.0.0.3<\/span><\/span>\n<\/p>\n

\nsh mpls traffic-eng tunnels [tunnel-id]<\/span><\/span><\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> both IOS and XR\n<\/p>\n

\nIOS (reoptimization timers)\n<\/p>\n

\n(config)# mpls traffic-eng reoptimization timers frequency <minutes><\/span><\/span>\n<\/p>\n

\nXR (reoptimization timers)\n<\/p>\n

\n(config)# mpls traffic-eng<\/span><\/span><\/p>\n

\nreoptimization timers frequency <minutes><\/span><\/span><\/p>\n

TE Metric<\/span><\/p>\n

\u00a0– There are two metrics<\/p>\n

\u00a0 \u00a0 \u00a0-> IGP metric<\/p>\n

\u00a0 \u00a0 \u00a0-> TE metric<\/p>\n

\u00a0– By default, TE metric is used to setup the tunnel if the dynamic path-option is used<\/p>\n

\u00a0– By default, TE metric is equal to IGP metric<\/p>\n

\u00a0 \u00a0 \u00a0-> To change change the TE metric<\/p>\n

R1(config)# int fa0\/0<\/span><\/p>\n

\u00a0mpls traffic-eng administrative-weight <value><\/span><\/p>\n

<\/p>\n

Tunnel R1 – R4<\/p>\n

R1(config)# int fa0\/0<\/span><\/p>\n

\u00a0mpls traffic-eng administrative-weight 65<\/span><\/p>\n

TE Metric Autoroute Announce<\/span><\/p>\n

\u00a0– Autoroute announce the best route metric calculation<\/p>\n

\u00a0 \u00a0 \u00a0-> It uses the tunnel interface as exit for all the prefixes connected to and beyond tail-end router<\/p>\n

<\/p>\n

R1 -> R3 + autoroute announce<\/p>\n

sh ip route<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 exit interface<\/p>\n

4.4.4.4 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Tunnel1<\/p>\n

3.3.3.3 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Tunnel1<\/p>\n

34.0.0.0 \u00a0 \u00a0 \u00a0 \u00a0Tunnel1<\/p>\n

The metric calculated for these prefixes follow some specific rules (four)<\/p>\n

<\/p>\n

Rule 1<\/span><\/p>\n

\u00a0– For prefixes directly connected to the tail-end router, the tunnel path is always used<\/p>\n

Tunnel R1 – R5 (dynamic)<\/p>\n

\u00a0– Both the IGP and TE metric will be the same<\/p>\n

<\/p>\n

Rule 2<\/span><\/p>\n

\u00a0– Load balancing for the prefixes beyond the tail-end router is possible with IGP, provided that autoroute announce metric and IGP metric is the same<\/p>\n

<\/p>\n

Rule 3<\/span><\/p>\n

\u00a0– Autoroute announce always checks the “least cost IGP” path to reach the tail-end router when calculating metric for the prefixes connected to and beyond the tail-end router<\/p>\n

<\/p>\n

Rule 4<\/span><\/p>\n

\u00a0– If the tail-end router is in the path of the IGP route, the IGP route is not considered at all<\/p>\n

Fast Reroute Protection (FRR)<\/span><\/p>\n

\u00a0– Fault tolerance mechanism<\/p>\n

\u00a0 \u00a0 \u00a0-> Link protection<\/p>\n

\u00a0 \u00a0 \u00a0-> Node protection<\/p>\n

\u00a0– FRR allows for the tunnel to continue being used in the case of link or node failure<\/p>\n

\u00a0– For this, it uses the concept of a backup tunnel which gets activated in the case of a link or node failure<\/p>\n

\u00a0– For any router that wants to protect the link, a backup tunnel is configured to become active when the protected link goes down<\/p>\n

\u00a0– The backup tunnel is inactive as long as the protected link is active<\/p>\n

\u00a0 \u00a0 \u00a0-> Very fast switch over<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -> Less than 50 ms<\/p>\n

\u00a0– Starting point of the backup tunnel is called the Point of Local Repair (PLR)<\/p>\n

\u00a0– End point of the backup tunnel is called the merge point<\/p>\n

<\/p>\n

An explicit tunnel is created on the PLR to reach the merge point by using the backup path<\/p>\n

\u00a0– This tunnel is then flagged as a backup tunnel inside the protected link’s interface<\/p>\n

\u00a0 \u00a0 \u00a0-> R2’s fa0\/1<\/p>\n

\u00a0 \u00a0 \u00a0-> By doing this, the backup tunnel becomes inactive as long as the protected link is up<\/p>\n

<\/p>\n

R1 must be configured for FRR<\/p>\n

\u00a0– The head-end router of the main tunnel must be configured with the fast reroute feature<\/p>\n

\u00a0 \u00a0 \u00a0-> So that it will continue sending traffic after receiving a path error message<\/p>\n

Fast Reroute Configuration\u00a0<\/p>\n

R1(config)# int tu1<\/span><\/p>\n

\u00a0tunnel mpls traffic-eng fast-reroute<\/span><\/p>\n

R2(config)# ip explicit-path name 243 enable<\/span><\/p>\n

\u00a0next-address 24.0.0.4<\/span><\/p>\n

\u00a0next-address 34.0.0.3<\/span><\/p>\n

int tu100<\/span><\/p>\n

\u00a0ipv4 unnumbered lo0<\/span><\/p>\n

\u00a0tunnel mode mpls traffic-eng<\/span><\/p>\n

\u00a0tunnel mpls traffic-eng path-option 1 explicit name 243<\/span><\/p>\n

\u00a0tunnel destination 3.3.3.3<\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> The merge point<\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> The bandwidth command is not needed<\/span><\/p>\n

int fa0\/1<\/span><\/p>\n

\u00a0mpls traffic-eng backup-path tu100<\/span><\/p>\n

PLR<\/p>\n

\u00a0– sh mpls traffic-eng backup<\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> 1 configured (0 active)<\/p>\n

XR Routers<\/p>\n

R1(config)# int tunnel-te 1<\/span><\/p>\n

\u00a0fast-reroute<\/span><\/p>\n

\u00a0root<\/span><\/p>\n

\u00a0commit<\/span><\/p>\n

R2(config)# explicit-path name 243<\/span><\/p>\n

\u00a0index 10 next-address strict ipv4 unicast 24.0.0.4<\/span><\/p>\n

\u00a0index 20 n s i u 34.0.0.3<\/span><\/p>\n

int tunnel-te 100<\/span><\/p>\n

\u00a0ipv4 unnumbered lo0<\/span><\/p>\n

\u00a0path-option 1 explicit 243<\/span><\/p>\n

\u00a0destination 3.3.3.3<\/span><\/p>\n

mpls traffic-eng<\/span><\/p>\n

\u00a0int fa0\/1<\/span><\/p>\n

\u00a0 backup-path tunnel-te 100<\/span><\/p>\n

\u00a0 root<\/span><\/p>\n

\u00a0 commit<\/span><\/p>\n

<\/p>\n

Node Protection<\/span><\/p>\n

\u00a0– Next-to-next hop protection<\/p>\n

\u00a0 \u00a0 \u00a0-> NNHOP<\/p>\n

\u00a0– In node protection, next-to-next hop router from PLR is the merge point<\/p>\n

\u00a0– The backup tunnel is created with the merge point as the destination and explicit path-option excluding the failed node<\/p>\n

\u00a0– When the merge point receives the PATH message, it replies with the RESV message including it’s “incoming label” expected from the failed node<\/p>\n

\u00a0– The main tunnel’s head-end router should be configured with the fast reroute option<\/p>\n

IOS Routers<\/p>\n

R1(config)# int tu1<\/span><\/p>\n

\u00a0tunnel mpls traffic-eng fast-reroute node-protect<\/span><\/p>\n

R2(config)# ip explicit-path 245 enable<\/span><\/p>\n

\u00a0exclude-address 3.3.3.3<\/span><\/p>\n

int tu100<\/span><\/p>\n

\u00a0ip unnumbered lo0<\/span><\/p>\n

\u00a0tunnel mode mpls traffic-eng<\/span><\/p>\n

\u00a0tunnel destination 5.5.5.5<\/span><\/p>\n

\u00a0tunnel mpls traffic-eng path-option 1 explicit name 245<\/span><\/p>\n

int fa0\/0<\/span><\/p>\n

\u00a0mpls traffic-eng backup-path tu100<\/span><\/p>\n

On PLR<\/p>\n

\u00a0– sh mpls traffic-eng fast-reroute database [detail]<\/span><\/p>\n

Inter-Area Traffic Engineering<\/span><\/p>\n

\u00a0– OPSF<\/p>\n

\u00a0 \u00a0 \u00a0-> Multiple areas<\/p>\n

\u00a0 \u00a0 \u00a0-> Opaque LSA 11<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -> Scope – global (inter-area)<\/p>\n

\u00a0– IS-IS<\/p>\n

\u00a0 \u00a0 \u00a0-> Level-1 and Level-2 domains<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -> TLV 22 (type-length-value)<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0-> within a level<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -> TLV 125<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0-> Between levels (Level-1 and Level-2)<\/p>\n

\u00a0– Behaves like a link state protocol only within the same area<\/p>\n

\u00a0– Behaves like a distance vector protocol between multiple areas<\/p>\n

<\/p>\n

R1(config)# int tu1<\/span><\/p>\n

\u00a0ip unnumbered lo0<\/span><\/p>\n

\u00a0tunnel mode mpls traffic-eng<\/span><\/p>\n

\u00a0tunnel mpls traffic-eng bandwidth 2000<\/span><\/p>\n

\u00a0tunnel mpls traffic-eng path-option 1 explicit name ABC<\/span><\/p>\n

\u00a0tunnel destination 6.6.6.6<\/span><\/p>\n

ip explicit-path name ABC enable<\/span><\/p>\n

\u00a0next-address loose 3.3.3.3<\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> ABR<\/p>\n

\u00a0next-address loose 5.5.5.5<\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> ABR<\/p>\n

\u00a0next-address loose 6.6.6.6<\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> Destination<\/p>\n

<\/p>\n

\u00a0– On head-end router, the tunnel is configured with an explicit path-option with loose next-address<\/p>\n

\u00a0– Loose next-addresses are the mpls router-ids of ABRs in the path or Layer-1-2 routers<\/p>\n

\u00a0– When the path message is to be sent, these loose addresses are expanded to a collection of strict addresses by head-end router and every ABR<\/p>\n

XR Routers<\/p>\n

\u00a0<\/p>\n

explicit-path name ABC<\/span><\/p>\n

\u00a0index 10 next-address loose ipv4 unicast <ABR address><\/span><\/p>\n

Restriction on Inter-Area Traffic Engineering<\/span><\/p>\n

\u00a01. Cannot use dynamic path-option<\/p>\n

\u00a02. Cannot use affinity \/ attribute-flag<\/p>\n

\u00a03. Cannot use autoroute announce<\/p>\n

<\/p>\n

! R1<\/span><\/span><\/p>\n

mpls ldp<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/span><\/p>\n

\u00a0router-id 1.1.1.1<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp auto-config<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n

\u00a0 int lo0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/1<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n


\n\u00a0 mpls traffic-eng<\/span><\/span><\/p>\n


\n\u00a0 exit<\/span><\/span><\/p>\n

\u00a0 exit<\/span><\/span><\/p>\n

! \u00a0 \u00a0 ->\u00a0One of the problems with typing the configuration into a text editor and copying and pasting the configuration into the router<\/span><\/p>\n

! \u00a0 \u00a0 ->\u00a0\u201croot\u201d also works; \u00a0if not,\u00a0\u201cmpls traffic-eng\u201d and the interfaces in the next section\u00a0will get pasted into the\u00a0\u201carea 0″<\/span><\/p>\n

! \u00a0 \u00a0 -> The other option is to configure\u00a0<\/span>\u201c<\/span>mpls traffic\u201d before\u00a0\u201crouter ospf 1″<\/span><\/p>\n

mpls traffic-eng<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

rsvp<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 25000<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 25000<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

int tunnel-te 16<\/span><\/span><\/p>\n


\n\u00a0ipv4 unnumbered lo0<\/span><\/span><\/p>\n

\u00a0destination 6.6.6.6<\/span><\/span><\/span><\/p>\n

\u00a0signalled-bandwidth 4000<\/span><\/span><\/span><\/p>\n

\u00a0path-option 1 explicit name 16<\/span><\/span><\/p>\n


\nexplicit-path name 16<\/span><\/span><\/p>\n

\u00a0index 10 next-address strict ipv4 unicast 18.0.0.8<\/span><\/span><\/span><\/p>\n

\u00a0index 20 n s i u 78.<\/span><\/span>0.0.<\/span><\/span>7<\/span><\/span><\/span><\/p>\n

\u00a0index 30 n s i u 27.<\/span><\/span>0.0.<\/span><\/span>2<\/span><\/span><\/span><\/p>\n

\u00a0index 40 n s i u 23.<\/span><\/span>0.0.<\/span><\/span>3<\/span><\/span><\/span><\/p>\n

\u00a0index 50 n s i u 34.<\/span><\/span>0.0.<\/span><\/span>4<\/span><\/span><\/span><\/p>\n

\u00a0index 60 n s i u 46.<\/span>0.0.<\/span><\/span>6<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

int lo1<\/span><\/span><\/p>\n

\u00a0ipv4 add 1.1.1.11\/32<\/span><\/span><\/p>\n


\nrouter static<\/span><\/span><\/p>\n

\u00a0address-family ipv4 unicast<\/span><\/span><\/span><\/p>\n

\u00a06.6.6.66\/32 tunnel-te 16<\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

! R2<\/span><\/span><\/p>\n

mpls ldp<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/span><\/p>\n

\u00a0router-id 2.2.2.2<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp auto-config<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n

\u00a0 int lo0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n


\n\u00a0 mpls traffic-eng<\/span><\/span><\/p>\n


\n\u00a0 exit<\/span><\/span><\/p>\n

\u00a0 exit<\/span><\/span><\/p>\n

mpls traffic-eng<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

rsvp<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 25000<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 25000<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 25000<\/span><\/span><\/p>\n

! R3<\/span><\/span><\/p>\n

mpls ldp<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/span><\/p>\n

\u00a0router-id 3.3.3.3<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp auto-config<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n

\u00a0 int lo0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n


\n\u00a0 mpls traffic-eng<\/span><\/span><\/p>\n


\n\u00a0 exit<\/span><\/span><\/p>\n


\n\u00a0 exit<\/span><\/span><\/p>\n

mpls traffic-eng<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

rsvp<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 25000<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 25000<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 25000<\/span><\/span><\/p>\n

! R4<\/span><\/span><\/p>\n

mpls ldp<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/span><\/p>\n

\u00a0router-id 4.4.4.4<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp auto-config<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n

\u00a0 int lo0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n


\n\u00a0 mpls traffic-eng<\/span><\/span><\/p>\n


\n\u00a0 exit<\/span><\/span><\/p>\n


\n\u00a0 exit<\/span><\/span><\/p>\n

mpls traffic-eng<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

rsvp<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 25000<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 25000<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 25000<\/span><\/span><\/p>\n

! R5<\/span><\/span><\/p>\n

mpls label protocol ldp<\/span><\/span><\/p>\n


\nmpls ldp router-id lo0 force<\/span><\/span><\/p>\n


\nint lo0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint e1\/1<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/span><\/p>\n

\u00a0router-id 5.5.5.5<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp autoconfig<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

mpls traffic-eng tunnels<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 25000<\/span><\/span><\/span><\/p>\n

int e1\/1<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 25000<\/span><\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng area 0<\/span><\/span><\/p>\n

! R6<\/span><\/span><\/p>\n

mpls label protocol ldp<\/span><\/span><\/p>\n


\nmpls ldp router-id lo0 force<\/span><\/span><\/p>\n


\nint lo0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint e1\/1<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nrouter ospf 1<\/span><\/span><\/p>\n


\n\u00a0router-id 6.6.6.6<\/span><\/span><\/p>\n


\n\u00a0mpls ldp autoconfig<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

mpls traffic-eng tunnels<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 25000<\/span><\/span><\/span><\/p>\n

int e1\/1<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 25000<\/span><\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng area 0<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

int tu61<\/span><\/span><\/p>\n


\n\u00a0ip unnumbered lo0<\/span><\/span><\/p>\n

\u00a0tunnel mode mpls traffic-eng<\/span><\/span><\/span><\/p>\n

\u00a0tunnel mpls traffic-eng bandwidth 4000<\/span><\/span><\/span><\/p>\n

\u00a0tunnel mpls traffic-eng path-option 1 explicit name 61<\/span><\/span><\/p>\n


\n\u00a0tunnel destination 1.1.1.1<\/span><\/span><\/p>\n

ip explicit-path name 61 enable<\/span><\/span><\/span><\/p>\n

\u00a0next-address 56.0.0.5<\/span><\/span><\/span><\/p>\n

\u00a0ne 35.<\/span><\/span>0.0.<\/span><\/span>3<\/span><\/span><\/span><\/p>\n

\u00a0ne 23.<\/span><\/span>0.0.<\/span><\/span>2<\/span><\/span><\/span><\/p>\n

\u00a0ne 27.<\/span><\/span>0.0.<\/span><\/span>7<\/span><\/span><\/span><\/p>\n

\u00a0ne 78.<\/span><\/span>0.0.<\/span><\/span>8<\/span><\/span><\/span><\/p>\n

\u00a0ne 18.<\/span><\/span>0.0.<\/span><\/span><\/span>1<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

int lo1<\/span><\/span><\/p>\n

\u00a0ip add 6.6.6.66 255.255.255.255<\/span><\/span><\/span><\/p>\n

ip route 1.1.1.11 255.255.255.255 tu61<\/span><\/span><\/p>\n

! R7<\/span><\/span><\/p>\n

mpls label protocol ldp<\/span><\/span><\/p>\n


\nmpls ldp router-id lo0 force<\/span><\/span><\/p>\n


\nint lo0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint e1\/1<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint s2\/0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\n\u00a0ip ospf cost 1<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/span><\/p>\n

\u00a0router-id 7.7.7.7<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp autoconfig<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

mpls traffic-eng tunnels<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 25000<\/span><\/span><\/span><\/p>\n

int e1\/1<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 25000<\/span><\/span><\/span><\/p>\n

int s2\/0<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 25000<\/span><\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng area 0<\/span><\/span><\/p>\n

! R8<\/span><\/span><\/p>\n

mpls label protocol ldp<\/span><\/span><\/p>\n


\nmpls ldp router-id lo0 force<\/span><\/span><\/p>\n


\nint lo0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint s2\/0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\n\u00a0ip ospf cost 1<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/span><\/p>\n

\u00a0router-id 8.8.8.8<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp autoconfig<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

mpls traffic-eng tunnels<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 25000<\/span><\/span><\/span><\/p>\n

int s2\/0<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 25000<\/span><\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng area 0<\/span><\/span><\/p>\n


\nVerification:<\/span><\/span><\/p>\n

IOS:<\/span><\/p>\n

sh ip ospf int bri<\/span><\/span><\/p>\n

sh ip ospf nei<\/span><\/span><\/p>\n

sh ip route ospf<\/span><\/span><\/p>\n

sh mpls int<\/span><\/span><\/p>\n

sh mpls ldp nei<\/span><\/span><\/p>\n

sh mpls ldp dis<\/span><\/span><\/p>\n

sh mpls traffic-eng topology<\/span><\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> You configured the MPLS TE router-id right?<\/span><\/p>\n

sh mpls traffic-eng tunnels<\/span><\/span><\/p>\n

sh ip explicit-paths<\/span><\/span><\/p>\n

sh ip rsvp nei<\/span><\/span><\/p>\n

sh ip rsvp int<\/span><\/span><\/p>\n

sh ip rsvp sender<\/span><\/span><\/p>\n

sh ip rsvp reservation<\/span><\/span><\/p>\n

XR:<\/span><\/p>\n

sh ospf int rbi<\/span><\/span><\/p>\n

sh ospf nei<\/span><\/span><\/p>\n

sh route ospf<\/span><\/span><\/p>\n

sh mpls int<\/span><\/span><\/p>\n

sh mpls ldp nei bri<\/span><\/span><\/p>\n

sh mpls ldp dis<\/span><\/span><\/p>\n

sh mpls traffic-eng topology<\/span><\/span><\/p>\n

sh mpls traffic-eng tunnels<\/span><\/span><\/p>\n

sh explicit-paths<\/span><\/span><\/p>\n

sh rsvp nei<\/span><\/span><\/p>\n

sh rsvp int<\/span><\/span><\/p>\n

sh rsvp sender<\/span><\/span><\/p>\n

sh rsvp reservation<\/span><\/span><\/p>\n

! R1<\/span><\/p>\n

sh ip int bri<\/span><\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> Is the tunnel up?<\/span><\/p>\n

sh mpls traffic-eng tunnels<\/span><\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> Will tell you why the tunnel is not up<\/span><\/p>\n

ping 6.6.6.66<\/span><\/span><\/p>\n

traceroute 6.6.6.66<\/span><\/span><\/p>\n

sh rsvp int<\/span><\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> Did the bandwidth get allocated?<\/span><\/p>\n

sh rsvp sender<\/span><\/span><\/p>\n

sh rsvp reservation<\/span><\/span><\/p>\n

! R6<\/span><\/p>\n

sh ip int bri<\/span><\/span><\/p>\n

sh mpls traffic-eng tunnels<\/span><\/span><\/p>\n

ping 1.1.1.11<\/span><\/span><\/p>\n

traceroute 1.1.1.11<\/span><\/span><\/p>\n

sh rsvp int<\/span><\/span><\/p>\n

sh ip rsvp sender<\/span><\/span><\/p>\n

sh ip rsvp reservation<\/span><\/span><\/p>\n

<\/span><\/p>\n

<\/p>\n

! R1<\/span><\/span><\/p>\n

mpls ldp<\/span><\/span><\/p>\n


\nrouter ospf 1<\/span><\/span><\/p>\n


\n\u00a0router-id 1.1.1.1<\/span><\/span><\/p>\n


\n\u00a0mpls ldp auto-config<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n

\u00a0 int lo0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/1<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

mpls traffic-eng<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/p>\n


\nrouter ospf 1<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n


\n\u00a0 mpls traffic-eng<\/span><\/span><\/p>\n

rsvp<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 15000<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/p>\n

\u00a0 bandwidth 15000<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

int tunnel-te 16<\/span><\/span><\/p>\n

\u00a0ipv4 unnumbered lo0<\/span><\/span><\/span><\/p>\n

\u00a0destination\u00a06.6.6.6<\/span><\/span><\/span><\/p>\n

\u00a0signalled-bandwidth 4000<\/span><\/span><\/p>\n

\u00a0path-option 1 explicit name 16<\/span><\/span><\/p>\n

explicit-path name 16<\/span><\/span><\/span><\/p>\n

\u00a0index 10 next-address strict ipv4 unicast 12.0.0.2<\/span><\/span><\/span><\/p>\n

\u00a0index 20 n s i u 23.<\/span><\/span>0.0.<\/span><\/span>3<\/span><\/span><\/span><\/p>\n

\u00a0index 30 n s i u 35.<\/span><\/span>0.0.<\/span><\/span>5<\/span><\/span><\/span><\/p>\n

\u00a0index 40 n s i u 56.<\/span><\/span>0.0.<\/span><\/span><\/span>6<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

int tunnel-te 16<\/span><\/span><\/p>\n


\n\u00a0fast-reroute<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

router static<\/span><\/span><\/p>\n

\u00a0address-family ipv4 unicast<\/span><\/span><\/span><\/p>\n

\u00a0 6.6.6.66\/32 tunnel-te 16<\/span><\/span><\/p>\n

! R2<\/span><\/span><\/p>\n

mpls ldp<\/span><\/span><\/p>\n


\nrouter ospf 1<\/span><\/span><\/p>\n


\n\u00a0router-id 2.2.2.2<\/span><\/span><\/p>\n


\n\u00a0mpls ldp auto-config<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n

\u00a0 int lo0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

mpls traffic-eng<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n


\n\u00a0 mpls traffic-eng<\/span><\/span><\/p>\n

rsvp<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 15000<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 15000<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 15000<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

int tunnel-te 100<\/span><\/span><\/p>\n

\u00a0ipv4 unnumbered lo0<\/span><\/span><\/span><\/p>\n

\u00a0destination 3.3.3.3<\/span><\/span><\/span><\/p>\n

\u00a0path-option 1 explicit name 2743<\/span><\/span><\/p>\n


\nexplicit-path name 2743<\/span><\/span><\/p>\n

\u00a0index 10 n s i u 27.<\/span><\/span>0.0.<\/span><\/span>7<\/span><\/span><\/span><\/p>\n

\u00a0index 20 n s i u 47.<\/span><\/span>0.0.<\/span><\/span>4<\/span><\/span><\/span><\/p>\n

\u00a0index 30 n s i u 34.<\/span><\/span>0.0.<\/span><\/span>3<\/span><\/span><\/span><\/p>\n

mpls traffic-eng<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0 backup-path tunnel-te 100<\/span><\/span><\/p>\n

! R3<\/span><\/span><\/p>\n

mpls ldp<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/span><\/p>\n

\u00a0router-id 3.3.3.3<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp auto-config<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n

\u00a0 int lo0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

mpls traffic-eng<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n


\n\u00a0 mpls traffic-eng<\/span><\/span><\/p>\n

rsvp<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 15000<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/p>\n

\u00a0 bandwidth 15000<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/2<\/span><\/span><\/p>\n

\u00a0 bandwidth 15000<\/span><\/span><\/p>\n

! R4<\/span><\/span><\/p>\n

mpls ldp<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/span><\/p>\n

\u00a0router-id 4.4.4.4<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp auto-config<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n

\u00a0 int lo0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0 int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

mpls traffic-eng<\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/2<\/span><\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\n\u00a0area 0<\/span><\/span><\/p>\n


\n\u00a0 mpls traffic-eng<\/span><\/span><\/p>\n

rsvp<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/0<\/span><\/span><\/span><\/p>\n

\u00a0 bandwidth 15000<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/1<\/span><\/span><\/p>\n

\u00a0 bandwidth 15000<\/span><\/span><\/span><\/p>\n

\u00a0int gi0\/0\/0\/2<\/span><\/span><\/p>\n

\u00a0 bandwidth 15000<\/span><\/span><\/p>\n

! R5<\/span><\/span><\/p>\n

mpls label protocol ldp<\/span><\/span><\/p>\n


\nmpls ldp router-id lo0 force<\/span><\/span><\/p>\n


\nint lo0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint e1\/1<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/span><\/p>\n

\u00a0router-id 5.5.5.5<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp autoconfig<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

mpls traffic-eng tunnel<\/span><\/span><\/p>\n


\nrouter ospf 1<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng area 0<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 15000<\/span><\/span><\/span><\/p>\n

int e1\/1<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 15000<\/span><\/span><\/p>\n

! R6<\/span><\/span><\/p>\n

mpls label protocol ldp<\/span><\/span><\/p>\n


\nmpls ldp router-id lo0 force<\/span><\/span><\/p>\n


\nint lo0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint e1\/1<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/span><\/p>\n

\u00a0router-id 6.6.6.6<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp autoconfig<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

mpls traffic-eng tunnel<\/span><\/span><\/p>\n


\nrouter ospf 1<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng area 0<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng tunnels<\/span><\/span><\/p>\n


\n\u00a0ip rsvp bandwidth 105000<\/span><\/span><\/p>\n


\nint e1\/1<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 15000<\/span><\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

int lo1<\/span><\/span><\/span><\/p>\n

\u00a0ip add 6.6.6.66 255.255.255.255<\/span><\/span><\/p>\n

! R7<\/span><\/span><\/p>\n

mpls label protocol ldp<\/span><\/span><\/p>\n


\nmpls ldp router-id lo0 force<\/span><\/span><\/p>\n


\nint lo0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint e1\/1<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint s2\/0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/span><\/p>\n

\u00a0router-id 7.7.7.7<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp autoconfig<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

mpls traffic-eng tunnel<\/span><\/span><\/p>\n


\nrouter ospf 1<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng area 0<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 15000<\/span><\/span><\/span><\/p>\n

int e1\/1<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 15000<\/span><\/span><\/span><\/p>\n

int s2\/0<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 15000<\/span><\/span><\/p>\n

! R8<\/span><\/span><\/p>\n

mpls label protocol ldp<\/span><\/span><\/p>\n


\nmpls ldp router-id lo0 force<\/span><\/span><\/p>\n


\nint lo0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n


\nint s2\/0<\/span><\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/span><\/p>\n

router ospf 1<\/span><\/span><\/span><\/p>\n

\u00a0router-id 8.8.8.8<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp autoconfig<\/span><\/span><\/p>\n

!<\/span><\/span><\/p>\n

mpls traffic-eng tunnel<\/span><\/span><\/p>\n


\nrouter ospf 1<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng area 0<\/span><\/span><\/p>\n


\n\u00a0mpls traffic-eng router-id lo0<\/span><\/span><\/p>\n


\nint e1\/0<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 15000<\/span><\/span><\/span><\/p>\n

int s2\/0<\/span><\/span><\/p>\n

\u00a0mpls traffic-eng tunnels<\/span><\/span><\/span><\/p>\n

\u00a0ip rsvp bandwidth 15000<\/span><\/span><\/p>\n

<\/span><\/p>\n

Verification:<\/span><\/span><\/p>\n

IOS:<\/span><\/p>\n

sh ip ospf int bri<\/span><\/span><\/p>\n

sh ip ospf nei<\/span><\/span><\/p>\n

sh ip route ospf<\/span><\/span><\/p>\n

sh mpls int<\/span><\/span><\/p>\n

sh mpls ldp nei<\/span><\/span><\/p>\n

sh mpls ldp dis<\/span><\/span><\/p>\n

sh mpls traffic-eng topology<\/span><\/span><\/p>\n

sh mpls traffic-eng tunnels<\/span><\/span><\/p>\n

sh mpls traffic-eng tunnels protection<\/span><\/span><\/p>\n

sh mpls traffic-eng tunnels backup<\/span><\/span><\/p>\n

sh mpls traffic-eng fast-reroute database state complete<\/span><\/span><\/p>\n

sh ip explicit-paths<\/span><\/span><\/p>\n

sh ip rsvp nei<\/span><\/span><\/p>\n

sh ip rsvp int<\/span><\/span><\/p>\n

sh ip rsvp sender<\/span><\/span><\/p>\n

sh ip rsvp reservation<\/span><\/span><\/p>\n

XR:<\/span><\/p>\n

sh ospf int rbi<\/span><\/span><\/p>\n

sh ospf nei<\/span><\/span><\/p>\n

sh route ospf<\/span><\/span><\/p>\n

sh mpls int<\/span><\/span><\/p>\n

sh mpls ldp nei bri<\/span><\/span><\/p>\n

sh mpls ldp dis<\/span><\/span><\/p>\n

sh mpls traffic-eng topology<\/span><\/span><\/p>\n

sh mpls traffic-eng tunnels<\/span><\/span><\/p>\n

sh mpls traffic-eng tunnels protection<\/span><\/span><\/p>\n

sh mpls traffic-eng tunnels backup<\/span><\/span><\/p>\n

sh mpls traffic-eng fast-reroute database state complete<\/span><\/span><\/p>\n

sh explicit-paths<\/span><\/span><\/p>\n

sh rsvp nei<\/span><\/span><\/p>\n

sh rsvp int<\/span><\/span><\/p>\n

sh rsvp sender<\/span><\/span><\/p>\n

sh rsvp reservation<\/span><\/span><\/p>\n

! R1<\/span><\/p>\n

sh ip int bri<\/span><\/span><\/p>\n

sh mpls traffic-eng tunnels<\/span><\/span><\/p>\n

ping 6.6.6.66<\/span><\/span><\/p>\n

traceroute 6.6.6.66<\/span><\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> Shutdown interface gi0\/0\/0\/0 on R2 and run traceroute again<\/span><\/p>\n

sh mpls traffic-eng tunnels protection<\/span><\/span><\/p>\n

sh rsvp int<\/span><\/span><\/p>\n

sh rsvp sender<\/span><\/span><\/p>\n

sh rsvp reservation<\/span><\/span><\/p>\n

! R2<\/span><\/p>\n

sh mpls traffic-eng tunnels backup<\/span><\/span><\/p>\n

sh mpls traffic-eng fast-reroute database state complete<\/span><\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> Shutdown interface gi0\/0\/0\/0 and run this commands again<\/span><\/p>\n

! R6<\/span><\/p>\n

sh mpls traffic-eng tunnels<\/span><\/span><\/p>\n

<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

MPLS Traffic Engineering (MPLS TE)<\/p>\n","protected":false},"author":1,"featured_media":481,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[42,31],"class_list":["post-497","post","type-post","status-publish","format-standard","hentry","category-ccie","tag-mpls-te","tag-published"],"_links":{"self":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/497","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=497"}],"version-history":[{"count":3,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/497\/revisions"}],"predecessor-version":[{"id":526,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/497\/revisions\/526"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/media\/481"}],"wp:attachment":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=497"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=497"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=497"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}