nanog mailing list archives
Re: That pesky AS path corruption bug...
From: John Fraizer <nanog () EnterZone Net>
Date: Wed, 24 May 2000 00:23:05 -0400 (EDT)
On Tue, 23 May 2000, Vijay Gill wrote:
Since the corrupted AS-path does not include the AS that the route is coming from (at least in the corruption that I saw) it seems to me that a simple solution for all is to filter on AS i.e. only allow routes that have the AS of your EBGP neighbor prepended to them. I realize this does not cover all cases of wacky AS corruption problems but it may fix some ofThis is a hack. We do not need more cruft added on, rather, what we need is correct behavior. The correct behavior being - if you see a corrupt/ a malformed update from a peer, send a notify and drop the session. Seems fairly simple to me. The above suggestion of your fails in case of route servers. Insist on correct behavior, not on cruftery. /vijay
Come on people. It's VERY easy to do one of the following: (1) NOT implement AS-path filtering on route-server connections (2) Apply filtering on RS sessions with an as-path access-list that includes those AS's that you will see via that RS. Am I the only RA that notifies the peering contacts of all other RS peers when someone new joins? I certainly hope not. John Fraizer EnterZone, Inc
Current thread:
- That pesky AS path corruption bug... Blaine Christian (May 23)
- Re: That pesky AS path corruption bug... Peter T. Whiting (May 23)
- Re: That pesky AS path corruption bug... Jeff Haas (May 23)
- Re: That pesky AS path corruption bug... Vijay Gill (May 23)
- Re: That pesky AS path corruption bug... John Fraizer (May 23)
- Re: That pesky AS path corruption bug... Jeff Haas (May 24)
- Re: That pesky AS path corruption bug... John Fraizer (May 23)
- Re: That pesky AS path corruption bug... Peter T. Whiting (May 23)
- Message not available
- Re: That pesky AS path corruption bug... Kai Schlichting (May 23)
- Re: That pesky AS path corruption bug... Daniel Senie (May 23)
- Re: That pesky AS path corruption bug... Vijay Gill (May 23)
- Re: That pesky AS path corruption bug... Kai Schlichting (May 23)
- <Possible follow-ups>
- Re: That pesky AS path corruption bug... Vadim Antonov (May 23)
- Re: That pesky AS path corruption bug... Peter T. Whiting (May 23)
- Re: That pesky AS path corruption bug... Vijay Gill (May 23)
- Re: That pesky AS path corruption bug... Blaine Christian (May 23)
- Re: That pesky AS path corruption bug... Vijay Gill (May 23)