[c-nsp] Continous BGP session resets on SRD3

[Gordon Bezzina]

Hi,

Since this morning I am experiencing a weird problem on one of my full feeds
link.
My router is a 7606 with dual RSP720-3CXL-GE and running SRD3.

I have a multihop bgp peer to get the full bgp feed from my customer.

Suddenly this morning the connection started flapping. With the following
error message:

Jun 16 07:40:03 CEST: %BGP-5-ADJCHANGE: neighbor W.X.Y.Z vpn vrf XX Up 
Jun 16 07:42:36 CEST: %BGP-5-ADJCHANGE: neighbor W.X.Y.Z vpn vrf XX Down BGP
Notification sent
Jun 16 07:42:36 CEST: %BGP-3-NOTIFICATION: sent to neighbor W.X.Y.Z 3/4
(invalid flags for attribute) 3 bytes 000000
15w6d: BGP: 217.15.96.9 Bad attributes
Jun 16 07:42:36 CEST: %BGP-4-MSGDUMP: unsupported or mal-formatted message
received from W.X.Y.Z: 
FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF 012B 0200 0001 1040 0101 02C0 119A
0226 
0000 3D77 0000 22E0 0000 04F9 0000 3065 0003 0065 0003 0065 0000 C288 0000
22E4 
0000 22E4 0000 22E4 0000 22E4 0000 22E4 0000 22E4 0000 22E4 0000 22E4 0000
22E4 
0000 22E4 0000 22E4 0000 22E4 0000 22E4 0000 22E4 0000 22E4 0000 22E4 0000
22E4 
0000 22E4 0000 22E4 0000 22E4 0000 22E4 0000 22E4 0000 22E4 0000 22E4 0000
22E4 
0000 22E4 0000 22E4 0000 22E4 0000 22E4 0000 22E4 0000 22E4 4002 4E02 263D
7722 
E004 F930 655B A05B A0C2 8822 E422 E422 E422 E422 E422 E422 E422 E422 E422
E422 

Jun 16 07:42:42 CEST: %BGP_SESSION-5-ADJCHANGE: neighbor W.X.Y.Z IPv4
Unicast vpn vrf XX topology base removed from session  BGP Notification sent

The sequence is as follows:
It basically goes up, starts getting the feed, then at around 290K routes it
logs this error and resets the session. It will
Then start over again.

Note that this does not seem to be the route dampening issue - I do not even
have dampening enabled on my router.

Also mls cef is set at 350K for IPv4 and free RAM is over 1G

Any ideas?

Thanks/Regards
Gordon