Anybody hear of a Cisco BGP bug?

[spidey07]

Was working with AT&T and the engineering manager said something about a bug that is causing all sorts of problems. Didn't have the specific bug ID though.

apparently it is very new (the bug) and I don't know what version they are using in their core (wouldn't tell me)

The symptoms are dropped packets between various source/destination address pairs - even if they are from teh same src/dst networks. Meaning it isn't a routing problem, but a forwarding/CEF problem.

I mean there are bugs all the time, but this sounds serious.

 

[m1ldslide1]

Haven't heard, but I'm kinda mystified. Wish they had told you what software version... any idea what Cisco gear they have in their core?

 

[spidey07]

I think they are mainly 12k and some 7600s.

It may even be affecting the edge. Don't know. Basically packet loss between src/dst pairs.

 

[GrammatonJP]

I had a similar problem with bgp that required me to update the ios.. but the tech didnt want to tell me more..

 

[nightowl]

I have not heard of anything releated to BGP and CEF. That is not to say there is not one though.

Edit: Was this a newly discovered bug?

 

[spidey07]

I believe so. Can't find anything about it though so I could be off base.

I think it has something to do with CEF and MPLS (which relies on bgp) while running multiple VRFs.

 

[dphantom]

Originally posted by: spidey07
I believe so. Can't find anything about it though so I could be off base.

I think it has something to do with CEF and MPLS (which relies on bgp) while running multiple VRFs.

Spidey,
This what you looking for?

 

[Pheran]

Originally posted by: dphantom
Spidey,
This what you looking for?

Given that that bug is 5 years old, I rather doubt it.

 

[cmetz]

spidey07, there is a recent IOSng bug having to do with MPLS, maybe that's what they're talking about.

Didn't think AT&T was dumb^H^H^H^Hleading-edge enough to deploy ng boxes in their core.

 

[spidey07]

x800 in @ccess l@yer.

 

[dphantom]

Originally posted by: Pheran

Originally posted by: dphantom
Spidey,
This what you looking for?

Given that that bug is 5 years old, I rather doubt it.

Would help if I actually looked at the date. :disgust: