{"id":812,"date":"2021-08-20T03:10:45","date_gmt":"2021-08-20T03:10:45","guid":{"rendered":"http:\/\/feralpacket.org\/?p=812"},"modified":"2021-08-20T03:10:45","modified_gmt":"2021-08-20T03:10:45","slug":"bgp-troubleshooting-notes","status":"publish","type":"post","link":"https:\/\/feralpacket.org\/?p=812","title":{"rendered":"BGP Troubleshooting Notes"},"content":{"rendered":"<p>%BGP-3-NOTIFICATION: received from neighbor (unsupported\/disjoint capability)<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp; -&gt; Means you forgot to <span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">activate<\/span> the neighbor in the IPv6 address-family<\/p>\n<p>&nbsp; &nbsp; &nbsp;-&gt; If the neighbor is &nbsp;PE &#8211; CE eBGP, on the CE side you forgot to <span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">send-label<\/span> to&nbsp;the neighbor in the address-family ipv4<\/p>\n<p><a href=\"https:\/\/www.nanog.org\/meetings\/nanog33\/presentations\/troubleshooting.pdf\">https:\/\/www.nanog.org\/meetings\/nanog33\/presentations\/troubleshooting.pdf<\/a><\/p>\n<p><b>Verification (IOS):<\/b><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp sum<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp ipv6 u sum<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh bpg ipv6 u<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp ipv4 unicast sum<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp ipv6 unicast sum<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh ip bgp nei<\/span><\/p>\n<p>&nbsp; &nbsp; &nbsp;-&gt; detailed neighbor information<\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp ipv6 nei<\/span><\/p>\n<p>&nbsp; &nbsp; &nbsp;-&gt; detail neighbor information<\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp bgp ipv4 u nei 9.9.0.7<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp ipv6 u nei 2002:9:9::2<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\"><\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh ip protocols<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh ipv6 protocols<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh tcp brief<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh ip route bgp<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh ipv6 route bgp<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\"><\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vpnv4 u all sum<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vpnv4 u all<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vpnv6 u all sum<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vpnv6 u all<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\"><\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vpnv4 u all labels<\/span><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\"><\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">traceroute 172.9.0.11<\/span><\/p>\n<p>&nbsp; &nbsp; &nbsp;-&gt; Output will display&nbsp;the MPLS labels<\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\"><\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vrf ABC all sum<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vrf ABC all<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\"><\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh ip protocols vrf ABC<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh ipv6 protocols vrf ABC<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\"><\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">debug ip tcp transactions<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">debug ip bgp<\/span><\/p>\n<p><b>Verify redistribution:<\/b><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh ip route bgp<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh ip ospf database<\/span><\/p>\n<p>&nbsp; &nbsp; &nbsp;-&gt; Are the BGP routes in the OSPF database<\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh ipv6 route bgp<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh ipv6 eigrp topology<\/span><\/p>\n<p>&nbsp; &nbsp; &nbsp;-&gt; Are the BGP routes in the EIGRP topology?<\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh ip route ospf<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp<\/span><\/p>\n<p>&nbsp; &nbsp; &nbsp;-&gt; Are the OSPF routes in the BGP table?<\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh ipv6 route eigrp<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp ipv6 u<\/span><\/p>\n<p>&nbsp; &nbsp; &nbsp;-&gt; Are the EIGRP routes in the BGP table?<\/p>\n<p><b>Verification (XR):<\/b><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp ipv4 unicast sum<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp ipv6 unicast sum<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh protocols bgp<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh protocols ipv6 bgp<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp neighbors<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh route ipv4 bgp<\/span><\/p>\n<p><span style=\"background-color:rgb(255, 250, 165);-evernote-highlight:true;\">sh route ipv6 bgp<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\"><\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vpnv4 u sum<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vpnv4 u<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vpnv6 u&nbsp;sum<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vpnv6 u<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\"><\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vpnv4 unicast labels<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">traceroute vrf ABC 172.9.0.11<\/span><\/p>\n<p>&nbsp; &nbsp; &nbsp;-&gt; Output will display&nbsp;the MPLS labels<\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vpnv4 u vrf ABC 172.9.0.15 255.255.255.255 bestpath-compare<\/span><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\"><\/span><\/p>\n<p>&nbsp; &nbsp; &nbsp;-&gt; Shows the received label<\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vpnv6 u labels<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\"><\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">ping vrf ABC 172.9.113.3<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">ping vrf ABC 172.9.113.11<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh ipv4 vrf ABC int bri<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh ipv6 vrf ABC int bri<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh route vrf ABC<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh route vrf ABC ipv6 u<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\"><\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vrf ABC sum<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vrf ABC ipv4 u sum<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vrf ABC ipv6 u sum<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vrf ABC nei<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vrf ABC ipv6 u nei<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vrf ABC<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\">sh bgp vrf ABC ipv6 u<\/span><\/p>\n<p><span style=\"background-color: rgb(255, 250, 165);-evernote-highlight:true;\"><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>%BGP-3-NOTIFICATION: received from neighbor (unsupported\/disjoint capability)<\/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":[39,31,10,57],"class_list":["post-812","post","type-post","status-publish","format-standard","hentry","category-ccie","tag-bgp","tag-published","tag-service-provider","tag-share"],"_links":{"self":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/812","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=812"}],"version-history":[{"count":1,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/812\/revisions"}],"predecessor-version":[{"id":980,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/812\/revisions\/980"}],"wp:attachment":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=812"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=812"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}