OPERATIONAL DEFECT DATABASE
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The command clear bgp vrf all update-group (Applicable in general for 'clear bgp ...' command) is expected to reset all sessions within the vrf in the bgp update-group but instead it resets all the session of other address families like ipv4, mdt etc.
When using the "clear bgp" with options including update-group.
No workaround available. Need to be careful and conscious while using the command "clear bgp ... ".
clear bgp command don't accounts or considers AFIs/Address families (or option like vrf) when used with update-group option. The command clear bgp vrf all update-group (Applicable in general for 'clear bgp ...' command) is expected to reset all sessions within the vrf in the bgp update-group but instead it resets all the session of other address families like ipv4, mdt etc. It is applicable for other options after "clear bgp command". pe1#sh run | sec bgp ipv6 multicast rpf use-bgp router bgp 65000 bgp router-id 10.10.10.10 no bgp fast-external-fallover bgp log-neighbor-changes bgp graceful-restart restart-time 120 bgp graceful-restart stalepath-time 360 bgp graceful-restart bgp bestpath compare-routerid no bgp default route-target filter neighbor 172.31.23.2 remote-as 65000 neighbor 172.31.23.2 description ipv4 neighbor 172.31.34.4 remote-as 65000 neighbor 172.31.34.4 description vpnv4andmdt ! address-family ipv4 network 172.31.23.0 mask 255.255.255.0 redistribute connected neighbor 172.31.23.2 activate neighbor 172.31.23.2 soft-reconfiguration inbound neighbor 172.31.34.4 activate exit-address-family ! address-family vpnv4 neighbor 172.31.34.4 activate neighbor 172.31.34.4 send-community both exit-address-family ! address-family ipv4 mdt neighbor 172.31.34.4 activate neighbor 172.31.34.4 send-community both exit-address-family pe1# pe1#sh ip bgp summary BGP router identifier 10.10.10.10, local AS number 65000 BGP table version is 13, main routing table version 13 4 network entries using 576 bytes of memory 9 path entries using 720 bytes of memory 4/3 BGP path/bestpath attribute entries using 624 bytes of memory 0 BGP route-map cache entries using 0 bytes of memory 0 BGP filter-list cache entries using 0 bytes of memory BGP using 1920 total bytes of memory BGP activity 22/18 prefixes, 52/43 paths, scan interval 60 secs Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State 172.31.23.2 4 65000 1327 1330 13 0 0 19:59:51 172.31.34.4 4 65000 1323 1326 13 0 0 19:59:51 pe1# pe1#show ip bgp vpnv4 all summary BGP router identifier 10.10.10.10, local AS number 65000 BGP table version is 1, main routing table version 1 Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 172.31.34.4 4 65000 1326 1329 1 0 0 20:02:24 0 pe1#clear bgp vpnv4 unicast update-group 172.31.34.4 pe1# *Jul 14 14:22:06.973: %BGP-3-NOTIFICATION_MANY: sent to 1 sessions 6/4 (Administrative Reset) for update group, AFI: VPNv4 Unicast VRF: global pe1# *Jul 14 14:22:06.973: %BGP-5-ADJCHANGE: neighbor 172.31.34.4 Down User reset *Jul 14 14:22:06.973: %BGP_SESSION-5-ADJCHANGE: neighbor 172.31.34.4 VPNv4 Unicast topology base removed from session User reset *Jul 14 14:22:06.973: %BGP_SESSION-5-ADJCHANGE: neighbor 172.31.34.4 IPv4 MDT topology base removed from session User reset *Jul 14 14:22:06.973: %BGP_SESSION-5-ADJCHANGE: neighbor 172.31.34.4 IPv4 Unicast topology base removed from session User reset *Jul 14 14:22:07.841: %BGP-5-ADJCHANGE: neighbor 172.31.34.4 Up pe1# pe1#clear bgp vpnv4 unicast update-group pe1# *Jul 14 14:22:17.037: %BGP-3-NOTIFICATION_MANY: sent to 1 sessions 6/4 (Administrative Reset) for update group, AFI: VPNv4 Unicast VRF: global pe1# *Jul 14 14:22:17.038: %BGP-5-ADJCHANGE: neighbor 172.31.34.4 Down User reset *Jul 14 14:22:17.038: %BGP_SESSION-5-ADJCHANGE: neighbor 172.31.34.4 VPNv4 Unicast topology base removed from session User reset *Jul 14 14:22:17.038: %BGP_SESSION-5-ADJCHANGE: neighbor 172.31.34.4 IPv4 MDT topology base removed from session User reset *Jul 14 14:22:17.038: %BGP_SESSION-5-ADJCHANGE: neighbor 172.31.34.4 IPv4 Unicast topology base removed from session User reset *Jul 14 14:22:17.056: %BGP-5-ADJCHANGE: neighbor 172.31.34.4 Up pe1# pe1#sh ip bgp summary BGP router identifier 10.10.10.10, local AS number 65000 BGP table version is 13, main routing table version 13 4 network entries using 576 bytes of memory 9 path entries using 720 bytes of memory 4/3 BGP path/bestpath attribute entries using 624 bytes of memory 0 BGP route-map cache entries using 0 bytes of memory 0 BGP filter-list cache entries using 0 bytes of memory BGP using 1920 total bytes of memory BGP activity 22/18 prefixes, 58/49 paths, scan interval 60 secs Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 172.31.23.2 4 65000 1333 1336 13 0 0 20:05:23 3 172.31.34.4 4 65000 10 10 13 0 0 00:00:16 3 pe1# pe1#show ip bgp vpnv4 all summary BGP router identifier 10.10.10.10, local AS number 65000 BGP table version is 1, main routing table version 1 Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 172.31.34.4 4 65000 10 10 1 0 0 00:00:23 0
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