BGP Flapping

[ปลาวาฬทราย RMUTT CPE IX]

Log:

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*Dec 12 05:25:39.015: %BGP-3-NOTIFICATION: sent to neighbor 10.99.142.93 4/0 (hold time expired) 0 bytes
*Dec 12 05:25:39.015: %BGP-5-NBR_RESET: Neighbor 10.99.142.93 reset (BGP Notification sent)
*Dec 12 05:25:39.015: %BGP-5-ADJCHANGE: neighbor 10.99.142.93 vpn vrf WS Down BGP Notification sent
*Dec 12 05:25:39.015: %BGP_SESSION-5-ADJCHANGE: neighbor 10.99.142.93 IPv4 Unicast vpn vrf WS topology base removed from session  BGP Notification sent
*Dec 12 05:25:39.773: %BGP-5-ADJCHANGE: neighbor 10.99.142.93 vpn vrf WS

BGP Configuration:

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router bgp 65002
 !        
 address-family ipv4 vrf WS
  neighbor 10.99.142.93 remote-as 65009
  neighbor 10.99.142.93 activate
  neighbor 10.99.142.93 soft-reconfiguration inbound
 exit-address-family

WS# ping vrf WS 10.99.142.93 siz 1496 df- rep 1000:

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Success rate is 100 percent (1000/1000), round-trip min/avg/max = 2/39/971 ms

WS# sho ip bgp vpnv4 vrf WS neighbors

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  Last read 00:00:39, last write 00:00:15, hold time is 90, keepalive interval is 30 seconds > both sides

WS# debug bgp vrf WS all

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*Dec 12 05:04:13.015: BGP: 10.99.142.93 connection timed out 90628ms (last update) 90000ms (hold time)
*Dec 12 05:04:13.015: BGP: 10.99.142.93 went from Established to Closing
*Dec 12 05:04:13.015: %BGP-3-NOTIFICATION: sent to neighbor 10.99.142.93 4/0 (hold time expired) 0 bytes
*Dec 12 05:04:13.015: BGP: ses WS 10.99.142.93 (0xC562F930:1) Send NOTIFICATION 4/0 (hold time expired) 0 bytes
*Dec 12 05:04:13.015: BGP: 10.99.142.93 local error close after sending NOTIFICATION
*Dec 12 05:04:13.015: %BGP-5-NBR_RESET: Neighbor 10.99.142.93 reset (BGP Notification sent)
*Dec 12 05:04:13.015: BGP: nbr_topo WS 10.99.142.93 VPNv4 Unicast:base (0xC562F930:1) NSF delete stale NSF not active
*Dec 12 05:04:13.015: BGP: nbr_topo WS 10.99.142.93 VPNv4 Unicast:base (0xC562F930:1) NSF no stale paths state is NSF not active
*Dec 12 05:04:13.015: BGP: nbr_topo WS 10.99.142.93 VPNv4 Unicast:base (0xC562F930:1) Resetting ALL counters.
*Dec 12 05:04:13.015: BGP: 10.99.142.93 closing

How should I do?

Thank you very much.

[Georg Pauwen]

Hello,

what is in between these two BGP neighbors ? Are they directly connected ? Post the output of 'show ip bgp neighbors x.x.x.x' from both sides...

[ปลาวาฬทราย RMUTT CPE IX · Accepted solution]

I reloaded the other side. :-D