You should not be surprised if you get the answer is "We accept the routes they send us because as a customer of ours they pay us money, and in exchange we carry and advertise the routes they advertise to us". Of course you should not be surprised if you get no answer at all, on the basis that the provider may be of the view that the details of a commercial relationship with a customer are not part of the public domain. Its a tricky problem, and the lack of forcing functions in the routing space is part of the particular characterization of this space. regards, Geoff Huston At 12/11/00 09:37 PM +0100, Mike Portworsnick wrote:
We should ask their upstream provider why they are accepting this prefix!
Soltani, Abi (AS2563) and Sprintlink (AS1239)
xxxxxx#sh ip bgp 219.219.219.0 BGP routing table entry for 219.219.219.0/24, version 60351890 Paths: (4 available, best #2) Advertised to non peer-group peers: 212.38.194.14 212.38.194.66 212.38.194.82 212.117.65.190 1239 2563, (received & used) 144.232.228.5 (metric 68096) from 172.24.248.73 (212.38.195.68) Origin IGP, metric 62, localpref 150, valid, internal Community: 8938:2400 Originator: 212.38.195.68, Cluster list: 0.0.28.105 1239 2563, (received & used) 144.232.228.5 (metric 68096) from 172.24.248.72 (212.38.195.68) Origin IGP, metric 62, localpref 150, valid, internal, best Community: 8938:2400 Originator: 212.38.195.68, Cluster list: 0.0.28.105
cheers, Mike
Well, Korea National University have decided to announce 219.219.219.0/24 and inspite of me sending them e-mail, they still are. Ofcourse, I really don't understand why their upstream provider(s) is accepting this garbage from them.
A good motivation for such an action is the exchange of money.
These's policy, desired policy and commerce.
The most harmonious outcomes are when these things coincide.
What you are seeing in this case is either a misunderstanding, or a deliberate outcome of a commercial transaction. The former can be fixed by bring it to the attention of the parties involved. The latter has no such form of solution.
kind regards,
Geoff
******************************************************************** Mike Portworsnick