On Thu, Dec 01, 2011 at 05:07:15PM +0100, Igor Ybema wrote: > Hi there, > Since about 15:00u GMT we receive bgp updates from our transit which > destroys the bgp sessions with them with message: > > send NOTIFICATION: 3/9 (update: optional attribute error) with 11 byte > data. mxReadMs=610 > > We use redback smartedge routers (SE100) currently for BGP. > > Anyone who have seen this also?
Have a complaint from our customer too. On our side (juniper) this is logged as: NOTIFICATION received from <peer-ip> (External AS <peer-as>): code 3 (Update Message Error) subcode 9 (error with optional attribute), Data: c0 07 08 00 00 00 As far as I can decode this attribute this is: c0: optional, transitive, no partial, no extended-length 07: AGGREGATOR 08: attribute length is 8 bytes. I think attribute length may be a problem here, because per RFC AGGREGATOR is an optional transitive attribute of length 6. -- In theory, there is no difference between theory and practice. But, in practice, there is.
