Re: 23456 without AS4_PATH?

[Egor Zimin <lesnix () gmail com>]

Take a watch on this route:

show route 195.128.231.0/24 detail
[..omitted..]
               AS path: AS2 PA[5]: 39792 35320 AS_TRANS AS_TRANS 35748
               AS path: AS4 PA[4]: 35320 3.21 AS_TRANS 35748
               AS path: Merged[5]: 39792 35320 3.21 AS_TRANS 35748 I
[...omitted...]

AS4_PATH contain AS_TRANS, it's also RFC violation, isn't it ?

sthaug () nethelp no пишет:
> > Anyone else seeing this:
> > *> 91.196.186.0/24  62.237.167.25                          0 3292 3549 15703 43531 23456 i
> >
> > http://www.ietf.org/rfc/rfc4893.txt
> > 6.  Transition
> >    An OLD BGP speaker MUST NOT use AS_TRANS as its Autonomous System
> >    number.
> >     
>
> Seeing it here too. On our 4-byte capable routers:
>
> 91.196.186.0/24    *[BGP/170] 1d 13:36:53, MED 0, localpref 105, from 193.75.0.204
>                       AS path: 16150 15703 43531 AS_TRANS I
>                       AS path: 3356 6461 15703 43531 AS_TRANS I
>                       AS path: 1299 3549 15703 43531 AS_TRANS I
>
> And on our non 4-byte capable routers it is simply shown as 23456. This
> ASN should not be used to originate prefixes, agreed.
>
> Steinar Haug, Nethelp consulting, sthaug () nethelp no
>
>   

--
С уважением, 
  Егор Зимин