{"id":816,"date":"2021-08-20T03:10:16","date_gmt":"2021-08-20T03:10:16","guid":{"rendered":"http:\/\/feralpacket.org\/?p=816"},"modified":"2021-08-20T03:10:16","modified_gmt":"2021-08-20T03:10:16","slug":"eigrp-filtering-named-mode-route-maps-access-lists-prefix-lists","status":"publish","type":"post","link":"https:\/\/feralpacket.org\/?p=816","title":{"rendered":"EIGRP Filtering – Named Mode – Route-maps \/ Access-lists \/ Prefix-lists"},"content":{"rendered":"

EIGRP <\/span>Filtering – Named Mode – Route-maps \/ Access-lists \/ Prefix-lists<\/span><\/p>\n

 – Metric Maximum-hops<\/span><\/p>\n

     -> Discards routes over a certain hop count<\/p>\n

     -> Default hop count is 100<\/p>\n

     -> Configuring will cause neighbor relationships to bounce<\/p>\n

R3(config)# router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   metric maximum-hops 1<\/span><\/p>\n

 – Distribute-list – Standard ACL<\/span><\/p>\n

     -> Filter network(s)<\/p>\n

     -> Deny match<\/p>\n

     -> Permit any to allow the rest<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

R3(config)# access-list 1 deny 1.1.1.0 0.0.0.255<\/span><\/p>\n

access-list 1 permit any<\/span><\/p>\n

router ei AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distrib 1 in f0\/1<\/span><\/p>\n

    \u2014 or \u2014 <\/span><\/p>\n

R3(config)# access-list 1 deny 1.1.1.0 0.0.0.255<\/span><\/p>\n

access-list 1 permit any<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distrib 1 out f0\/0<\/span><\/p>\n

 – Distribute-list<\/span> – Default deny <\/span>– Standard ACL<\/span><\/p>\n

     -> Filter network(s) that are not permitted<\/p>\n

          -> Permit match<\/p>\n

     -> Default deny match all other networks<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

R3(config)# access-list 1 permit 1.1.1.1 0.0.0.255<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list 1 in fa0\/1<\/span><\/p>\n

 – Distribute-list – Filter Every Other Network <\/span>– Standard ACL<\/span><\/p>\n

     -> Filter networks<\/p>\n

     -> Deny match<\/p>\n

     -> Permit any to allow the rest<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

! Deny even routes<\/p>\n

R3(config)# access-list 1 deny 1.1.0.0 0.0.254.255<\/span><\/p>\n

 access-list 1 permit any<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list 1 in fa0\/1<\/span><\/p>\n

! Deny odd routes<\/p>\n

R3(config)# access-list 1 deny 1.1.1.0 0.0.254.255<\/span><\/p>\n

 access-list 1 permit any<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list 1 out fa0\/0<\/span><\/p>\n

 – Distribute-list – Filter Every Other Network – Default Deny<\/span> – Standard ACL<\/span><\/p>\n

     -> Filter network(s) that are not permitted<\/p>\n

     -> Permit match<\/p>\n

     -> Default deny match all other networks<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

! Permit even routes<\/p>\n

R3(config)# access-list 1 permit 1.1.0.0 0.0.254.255<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list 1 in fa0\/1<\/span><\/p>\n

! Permit odd routes<\/p>\n

R3(config)# access-list 1 permit 1.1.1.0 0.0.254.255<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list 1 out fa0\/0<\/span><\/p>\n

 – Distribute-list – Filter Every Other Network – Allow All Other Networks<\/span> – Standard ACL<\/span><\/p>\n

     -> Filter network(s) that are not permitted<\/p>\n

     -> Permit match<\/p>\n

     -> Deny match<\/p>\n

     -> Permit any to allow the rest<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

R3(config)# access-list 1 permit 1.1.0.0 0.0.254.255<\/span><\/p>\n

 access-list 1 deny 1.1.0.0 0.0.255.255<\/span><\/p>\n

 access-list 1 permit any<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list 1 in fa0\/1<\/span><\/p>\n

– Distribute-list – Extended ACL<\/span><\/p>\n

     -> Filter network(s)<\/p>\n

     -> First IP address (source address) is the route source<\/p>\n

        -> Who did we learn the route from?<\/p>\n

        -> Not who first advertised the route.<\/p>\n

     -> Second IP address (destination address) is the network(s) to filter<\/p>\n

     -> Deny match<\/p>\n

     -> Permit any to allow the rest<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

R3(config)#access-list 100 deny ip any host 1.1.1.0<\/span><\/p>\n

access-list 100 permit ip any any<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

  distribute-list 100 in f0\/1<\/span><\/p>\n

    \u2014 or \u2014 <\/span><\/p>\n

R3(config)#access-list 100 deny ip any 1.1.1.0 0.0.0.255<\/span><\/p>\n

access-list 100 permit ip any any<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list 100 out f0\/0<\/span><\/p>\n

– Distribute-list – Filter From Specific Route Source – Extended ACL<\/span><\/p>\n

     -> Filter network(s)<\/p>\n

     -> First IP address (source address) is the route source<\/p>\n

        -> Who did we learn the route from?<\/p>\n

        -> Not who first advertised the route.<\/p>\n

     -> Second IP address (destination address) is the network(s) to filter<\/p>\n

     -> Deny match<\/p>\n

     -> In only<\/p>\n

     -> (Optional)  Interface<\/p>\n

R3(config)# access-list 100 deny ip host 23.1.1.2 host 2.2.2.0 <\/span><\/p>\n

access-list 100 permit ip any any<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list 100 in f0\/1<\/span><\/p>\n

    \u2014 or \u2014 <\/span><\/p>\n

R3(config)# access-list 100 deny ip host 23.1.1.2 2.2.2.0 0.0.0.255<\/span><\/p>\n

access-list 100 permit ip any any<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list 100 in f0\/1<\/span><\/p>\n

    -> Output of: debug eigrp fsm<\/span><\/p>\n

    -> *Oct  1 22:33:26.525: DUAL: AS(100) Removing dest 1.1.1.0\/24, nexthop 23.1.1.2<\/p>\n

    -> *Oct  1 22:33:26.526: DUAL: AS(100) Removing dest 1.1.1.0\/24, nexthop 34.1.1.4<\/p>\n

    -> *Oct  1 22:33:26.526: DUAL: AS(100) No routes.  Flushing dest 1.1.1.0\/24<\/p>\n

R3(config)# access-list 100 deny ip host 23.1.1.2 host 2.2.2.0 <\/span><\/p>\n

access-list 100 permit ip any any<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list 100 out f0\/0<\/span><\/p>\n

 – Distribute-list – Route-map – Standard ACL<\/span><\/p>\n

     -> Filter network(s)<\/p>\n

     -> ACL permit match<\/p>\n

     -> Route-map deny match<\/p>\n

     -> Route-map permit to allow the rest<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

R3(config)# access-list 1 permit 1.1.1.0 0.0.0.255<\/span><\/p>\n

route-map FILTER deny 10<\/span><\/p>\n

 match ip add 1<\/span><\/p>\n

route-map FILTER permit 90<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list route-map FILTER in fa0\/0<\/span><\/p>\n

 – Distribute-list – Use Existing Route-map – Standard ACL<\/span><\/p>\n

     -> Filter network(s)<\/p>\n

     -> Add continue option to existing route-map to continue evaluating<\/p>\n

     -> Deny match<\/p>\n

     -> Permit any to allow the rest<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

R1(config)# access-list 2 2.2.2.0.0.0.255<\/span><\/p>\n

route-map EXISTING deny 10<\/span><\/p>\n

 continue 20<\/span><\/p>\n

route-map EXISTING deny 20<\/span><\/p>\n

 match ip add 2<\/span><\/p>\n

route-map EXISTING permit 90<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list route-map EXISTING in fa0\/0<\/span><\/p>\n

 – Distribute-list – Route-map – Extended ACL<\/span><\/p>\n

     -> Filter network(s)<\/p>\n

     -> ACL permit match<\/p>\n

     -> Route-map deny match<\/p>\n

     -> Route-map permit to allow the rest<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

R3(config)# access-list 100 permit ip host 1.1.1.0 host 255.255.255.0<\/span><\/p>\n

route-map FILTER deny 10<\/span><\/p>\n

 match ip add 100<\/span><\/p>\n

route-map FILTER permit 90<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list route-map FILTER out fa0\/0<\/span><\/p>\n

 – Distribute-list – Filter Specific Networks and Subnet Masks – Route-map – Extended ACL<\/span><\/p>\n

     -> Filter network(s)<\/p>\n

         -> Filter 1.1.0.0\/16 subnets with a subnet mask of \/24<\/p>\n

     -> ACL permit match<\/p>\n

     -> Route-map deny match<\/p>\n

     -> Route-map permit to allow the rest<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

R1(config)#int lo2<\/p>\n

R1(config-if)#ip add 1.1.3.1 255.255.255.0<\/p>\n

R3(config)# access-list 100 permit ip 1.1.0.0 0.0.255.255 host 255.255.255.0<\/span><\/p>\n

route-map FILTER deny 10<\/span><\/p>\n

 match ip add 100<\/span><\/p>\n

route-map FILTER permit 90<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list route-map FILTER in fa0\/1<\/span><\/p>\n

 – Distribute-list – Match Metric – Route-map<\/span><\/p>\n

     -> Match a range of composite metrics<\/p>\n

     -> Route-map deny <\/p>\n

     -> Match metric<\/p>\n

     -> Route-map permit to allow the rest<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

R1(config)# route-map METRIC-DENY deny 10<\/span><\/p>\n

 match metric 2141056 +- 25600<\/span><\/p>\n

route-map METRIC-DENY permit 90<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list route-map METRIC-DENY in fa0\/0<\/span><\/p>\n

 – Distribute-list – Set Tag – Route-map<\/span><\/p>\n

    -> Set a route tag<\/p>\n

    -> Route-map permit<\/p>\n

    -> Set tag<\/p>\n

    -> In or out<\/p>\n

    -> (Optional)  Interface<\/p>\n

R1(config)# route-map TAG permit 10<\/span><\/p>\n

 set tag 90<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list route-map TAG out fa0\/0<\/span><\/p>\n

 – Redistribute – Set Tag – Route-map<\/span><\/p>\n

    -> Set a route tag<\/p>\n

    -> Route-map permit<\/p>\n

    -> Set tag<\/p>\n

R1(config)# route-map TAG permit 10<\/span><\/p>\n

set tag 90<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  no network 1.1.1.1 0.0.0.0<\/span><\/p>\n

  topology base<\/span><\/p>\n

   redistribute connected route-map TAG<\/span><\/p>\n

 – Distribute-list – Match Tag – Route-map<\/span><\/p>\n

     -> Match a route tag<\/p>\n

     -> Route-map deny <\/p>\n

     -> Match tag<\/p>\n

     -> Route-map permit to allow the rest<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

R2(config)# route-map TAG-DENY deny 10<\/span><\/p>\n

 match tag 90<\/span><\/p>\n

route-map TAG-DENY permit 90<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list route-map TAG-DENY in fa0\/0<\/span><\/p>\n

 <\/span><\/p>\n

 – Distribute-list – Match Source-protocol – Route-map<\/span><\/p>\n

     -> Match a source protocol<\/span><\/p>\n

     -> Route-map deny<\/span><\/p>\n

     -> match protocol<\/span><\/p>\n

     -> Route-map permit to allow the rest<\/span><\/p>\n

     -> In or out<\/span><\/p>\n

     -> (Optional)  Interface<\/span><\/p>\n

R1(config)# <\/span>route-map FILTER deny 10<\/span><\/p>\n

 match source-protocol eigrp 100<\/span><\/p>\n

route-map FILTER permit 90<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list route-map FILTER in fa0\/0<\/span><\/p>\n

– Distribute-list – Prefix-list<\/span><\/p>\n

     -> Filter network(s)<\/p>\n

     -> deny match<\/p>\n

     -> permit 0.0.0.0\/0 le 32 to allow the rest<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

R3(config)# ip prefix-list NET_1.1.1.0 deny 1.1.1.0\/24<\/span><\/p>\n

 ip prefix-list NET_1.1.1.0 permit 0.0.0.0\/0 le 32<\/span><\/p>\n

router eigrp 100<\/span><\/p>\n

 distribute-list prefix NET_1.1.1.0 out fa0\/0<\/span><\/p>\n

    -> Output of: debug ip eigrp<\/span><\/p>\n

    ->  *Sep 30 21:24:30.755: EIGRP-IPv4(100): table(default): 1.1.1.0\/24 – denied by distribute list<\/p>\n

 – Distribute-list – Filter Default Route – Prefix-list<\/span><\/p>\n

     -> Filter network(s) that are not permitted<\/p>\n

          -> Permit match<\/p>\n

     -> Default deny match all other networks<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

R1(config)#access-list 1 permit 1.1.0.0 0.0.255.255<\/p>\n

R1(config)#route-map LEAK_1.1.0.0 permit 10<\/p>\n

R1(config-route-map)#match ip add 1<\/p>\n

R1(config-route-map)#int f0\/0<\/p>\n

R1(config-if)#ip summary-address eigrp 100 0.0.0.0 0.0.0.0 leak-map LEAK_1.1.0.0<\/p>\n

R3(config)# ip prefix-list DENY_DEFAULT deny 0.0.0.0\/0<\/span><\/p>\n

 ip prefix-list DENY_DEFAULT permit 0.0.0.0\/0 le 32<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list prefix DENY_DEFAULT in fa0\/1<\/span><\/p>\n

 – Distribute-list – Filter from Specific Source – Prefix-list<\/span><\/p>\n

     -> Filter network(s)<\/p>\n

               -> prefix-list 1<\/p>\n

               -> deny match to filter<\/p>\n

               -> permit match to allow<\/p>\n

          -> (Optional)  permit 0.0.0.0\/0 le 32 to allow the rest<\/p>\n

     -> Filter source<\/p>\n

               -> prefix-list 2<\/p>\n

               -> permit match<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

R3(config)# ip prefix-list NET_1.1.1.0 deny 1.1.1.0\/24<\/span><\/p>\n

 ip prefix-list NET_1.1.1.0 permit 0.0.0.0\/0 le 32<\/span><\/p>\n

 ip prefix-list GW_23.1.1.2 permit 23.1.1.2\/32<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list prefix NET_1.1.1.0 gateway GW_23.1.1.2 in fa0\/1<\/span><\/p>\n

 – Distribute-list – Route-map – Prefix-list<\/span><\/p>\n

     -> Filter network(s)<\/p>\n

     -> Prefix-list permit match<\/p>\n

     -> Route-map deny match<\/p>\n

     -> Route-map permit to allow the rest<\/p>\n

     -> In or out<\/p>\n

     -> (Optional)  Interface<\/p>\n

R3(config)# ip prefix-list NET_1.1.1.0 permit 1.1.1.0\/24<\/span><\/p>\n

route-map FILTER deny 10<\/span><\/p>\n

 match ip add prefix NET_1.1.1.0<\/span><\/p>\n

route-map FILTER permit 90<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distribute-list route-map FILTER in fa0\/1<\/span><\/p>\n

 – Manipulate Administrative Distance – Standard ACL<\/span><\/p>\n

     -> Change AD<\/p>\n

          -> Increase the AD to make the route less desirable<\/p>\n

          -> Decrease the AD to make the route more desirable<\/p>\n

     -> Locally significant<\/p>\n

     -> IP address is the route source<\/p>\n

          -> 0.0.0.0 255.255.255.255 -> any route source<\/p>\n

     -> Permit match<\/p>\n

R2(config)# access-list 1 permit 1.1.1.0 0.0.0.255<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distance 91 0.0.0.0 255.255.255.255 1<\/span><\/p>\n

 – Manipulate Administrative Distance – Prefer One Route Source Over Another – Standard ACL<\/span><\/p>\n

     -> Change AD<\/p>\n

          -> Increase the AD to make the route less desirable<\/p>\n

          -> Decrease the AD to make the route more desirable<\/p>\n

     -> Locally significant <\/p>\n

     -> IP address is the route source<\/p>\n

     -> Permit match<\/p>\n

R2(config)# access-list 1 permit 1.1.1.0 0.0.0.255<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distance 91 12.1.1.1 0.0.0.0 1<\/span><\/p>\n

 – Manipulate Administrative Distance – Filter Network – Standard ACL<\/span><\/p>\n

     -> Change AD to make network unreachable<\/p>\n

     -> IP address is the route source<\/p>\n

          -> 0.0.0.0 255.255.255.255 -> any route source<\/p>\n

     ->Permit match<\/p>\n

R2(config)# access-list 1 permit 1.1.1.0 0.0.0.255<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distance 255 0.0.0.0 255.255.255.255 1<\/span><\/p>\n

 – Manipulate Administrative Distance – Filter External Networks – No ACL<\/span><\/p>\n

     -> Change AD to make external networks unreachable<\/p>\n

R1(config)# router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  topology base<\/span><\/p>\n

   distance eigrp 90 255<\/span><\/p>\n

 – Summary-address – Leak-map – Standard ACL<\/span><\/p>\n

     -> Create summary-address<\/p>\n

     -> Leak additional route(s)<\/p>\n

     -> Permit match<\/p>\n

R1(config)# access-list 1 permit 1.1.1.0 0.0.255.255<\/span><\/p>\n

route-map LEAK_1.1.0.0 permit 10<\/span><\/p>\n

 match ip add 1<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  af-interface f0\/0<\/span><\/p>\n

   summary-address eigrp 100 1.1.0.0 255.255.0.0 leak-map LEAK_1.1.0.0<\/span><\/p>\n

 – Summary-address – Leak-map – Advertise All Specific Routes – No ACL<\/span><\/p>\n

     -> Create a summary-address<\/p>\n

     -> Leak additional all more specific route(s)<\/p>\n

     -> No ACL is configured<\/p>\n

          -> If the route-map is does not reference an ACL or a referenced ACL does not exist, all of the specific routes are advertised<\/p>\n

R1(config)# route-map LEAK_1.1.0.0 permit 10<\/span><\/p>\n

router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  af-interface f0\/0<\/span><\/p>\n

   summary-address eigrp 100 100 1.1.0.0 255.255.0.0 leak-map LEAK_1.1.0.0<\/span><\/p>\n

 – Duplicate Router-IDs<\/span><\/p>\n

     -> Routes originated by the routers will be discarded by the other router<\/p>\n

R1(config)# router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  eigrp router-id 1.1.1.1<\/span><\/p>\n

R2(config)# router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  eigrp router-id 1.1.1.1<\/span><\/p>\n

 – Stub Routing – Receive Only<\/span><\/p>\n

     -> Receive routes only<\/p>\n

     -> Do not advertise any route(s)<\/p>\n

R1(config)# router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  eigrp stub receive-only<\/span><\/p>\n

 – Passive Interface<\/span><\/p>\n

     -> Suppress routing updates on an interface<\/p>\n

R1(config)# router eigrp AS100<\/span><\/p>\n

 add ipv4 auto 100<\/span><\/p>\n

  af-interface f0\/0<\/span><\/p>\n

   passive-interface<\/span><\/p>\n

 – Lab Network<\/span><\/p>\n

     -> R1<\/span> (f0\/0) —- (f0\/0) R2<\/span> (f0\/1) —- (f0\/1) R3<\/span> (f0\/0) —- (f0\/1) R4<\/span><\/p>\n

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


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


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


\nconf t<\/span><\/p>\n


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

int f0\/0<\/span><\/p>\n

 ip add 12.1.1.1 255.255.255.0<\/span><\/p>\n


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

 ip add 1.1.2.1 255.255.255.255<\/span><\/p>\n


\nint lo2<\/span><\/p>\n

 ip add 1.1.3.1 255.255.255.0<\/span><\/p>\n


\nint lo3<\/span><\/p>\n

 ip add 1.1.4.1 255.255.255.255<\/span><\/p>\n


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

router ei AS100<\/span><\/p>\n

 address-family ipv4 auto 100<\/span><\/p>\n

  netw 12.1.1.1 0.0.0.0<\/span><\/p>\n

  netw 1.1.1.1 0.0.0.0<\/span><\/p>\n

  netw 1.1.2.1 0.0.0.0<\/span><\/p>\n

  netw 1.1.3.1 0.0.0.0<\/span><\/p>\n

  netw 1.1.4.1 0.0.0.0<\/span><\/p>\n


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


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

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


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


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


\nconf t<\/span><\/p>\n


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

int f0\/0<\/span><\/p>\n

 ip add 12.1.1.2 255.255.255.0<\/span><\/p>\n

int f0\/1<\/span><\/p>\n

 ip add 23.1.1.2 255.255.255.0<\/span><\/p>\n

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

 ip add 2.2.2.2 255.255.255.255<\/span><\/p>\n

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

router ei AS100<\/span><\/p>\n

 address-family ipv4 auto 100<\/span><\/p>\n

  netw 12.1.1.2 0.0.0.0<\/span><\/p>\n

  netw 23.1.1.2 0.0.0.0<\/span><\/p>\n

  netw 2.2.2.2 0.0.0.0<\/span><\/p>\n


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

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


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


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


\nconf t<\/span><\/p>\n


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

int f0\/0<\/span><\/p>\n

 ip add 34.1.1.3 255.255.255.0<\/span><\/p>\n

int f0\/1<\/span><\/p>\n

 ip add 23.1.1.3 255.255.255.0<\/span><\/p>\n

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

 ip add 3.3.3.3 255.255.255.255<\/span><\/p>\n

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

router ei AS100<\/span><\/p>\n

 address-family ipv4 auto 100<\/span><\/p>\n

  netw 23.1.1.3 0.0.0.0<\/span><\/p>\n

  netw 34.1.1.3 0.0.0.0<\/span><\/p>\n

  netw 3.3.3.3 0.0.0.0<\/span><\/p>\n


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

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


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


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


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


\nconf t<\/span><\/p>\n


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

int f0\/1<\/span><\/p>\n

 ip add 34.1.1.4 255.255.255.0<\/span><\/p>\n

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

 ip add 4.4.4.4 0.0.0.0<\/span><\/p>\n

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

router ei AS100<\/span><\/p>\n

 address-family ipv4 auto 100<\/span><\/p>\n

  netw 34.1.1.4 0.0.0.0<\/span><\/p>\n

  netw 4.4.4.4 0.0.0.0<\/span><\/p>\n

 end<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

EIGRP\u00a0Filtering – Named Mode – Route-maps \/ Access-lists \/ Prefix-lists<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[49,31],"class_list":["post-816","post","type-post","status-publish","format-standard","hentry","category-ccie","tag-eigrp","tag-published"],"_links":{"self":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/816","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=816"}],"version-history":[{"count":1,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/816\/revisions"}],"predecessor-version":[{"id":978,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/816\/revisions\/978"}],"wp:attachment":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=816"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=816"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=816"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}