I have two data centres and one of them connects upstream and receives the full internet routing table this is then forwarded via iBGP to the other Data-Centre (Don't worry about if this is good practice or not, it is configuration I have inherited and can do nothing about for now).
With no change of configurations and no network changes, suddenly the holdown timers are expring and this connection is constantly up/down because of the peer resets.
Weirdly, we are able to ping devices connected to this DC but cannot pass any other traffic. Here is what I am now seeing in the error log and was hoping someone could point me in the right direction:
Mar 23 12:31:46.216: %LDP-SW1-5-SP: 192.168.1.1:0: session hold up initiated
Mar 23 12:32:42.903: %MSDP-SW1-5-PEER_UPDOWN: Session to peer 192.168.1.1 going down
Mar 23 12:33:03.944: %LDP-SW1-5-SP: 192.168.1.1 :0: session recovery succeeded
Mar 23 12:33:28.085: %MSDP-SW1-5-PEER_UPDOWN: Session to peer 192.168.1.1 going up
Mar 23 12:39:44.601: %LDP-SW1-5-SP: 192.168.1.1:0: session hold up initiated
Mar 23 12:40:31.532: %MSDP-SW1-5-PEER_UPDOWN: Session to peer 192.168.1.1 going down
Mar 23 12:40:55.721: %LDP-SW1-5-SP: 192.168.1.1:0: session recovery succeeded
Mar 23 12:41:28.127: %MSDP-SW1-5-PEER_UPDOWN: Session to peer 192.168.1.1 going up
I have confirmed the X-Connect is good and have also replaced the sfp's. I am planning on changing out the core switches as it could be hardware or an ios issue, but I am hoping I do not have to.
Thanks
