[AusNOG] Pipe NSW IX backup route server - outbound BGP updates

[Mark Tees]

Hi listers,

Noticed an issue with Pipe NSW IX backup route server not sending out routes to us since last weekend. Looks like other people are effected also.

I have an issue open with Pipe about this and they are rolling out a fix apparently.

The issue was along the lines of zero BGP updates being received on our side when the BGP session is established. They receive our routes just fine by the looks of it.

Ourside "show ip bgp neighbours 218.100.2.62" output:
<snip>
                         Sent       Rcvd
    Opens:                  1          1
    Notifications:          0          0
    Updates:                6          0
    Keepalives:           287        257
    Route Refresh:          0          0
    Total:                294        258
</snip>

Where as on the route server side when I look at the neighbour status output on their side it shows as them having sent updates and routes. I checked this via doing “show ip bgp neighbours 218.100.2.96” from their LG.

I spotted other peers connected to that route server with problems because in the BGP summary output from the LG, peers effected so far had been reset recently and their table version was 0. This has been confirmed by another peer.

Doesn’t look like any of this is related to policy. My question is from a config perspective is there anything outside of a bug that is likely to cause this behaviour with BGP UPDATE messages being dropped? Their side is Cisco too by the looks of it. Rumoured to be 7200 series.

Any comments appreciated.

Mark