You make it sound like that can happen in a matter of minutes or even seconds. Not likely the case. All the while your clients are getting hosed due to the negligence of another.
Best, Brad -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Adam Kennedy Sent: Friday, April 27, 2007 1:11 PM To: WISPA General List Subject: Re: [WISPA] WISP Peering That's where peering agreements come into play. Last case scenario you (WISP-A) just want to drop peering entirely but WISP-B doesn't stop advertising your route, then call up whoever their upstream is and talk to their NOC. If the /20 is your allocation from ARIN, and you aren't peering anymore, explain the situation to the NOC and they can stop accepting your /20 from WISP-B's advertisement. Easy as that. Travis Johnson wrote: > This is not correct. Let's do an example: > > WISP-A is getting bandwidth from Provider A. They have a /20 network. > Provider A has to allow that /20 in their BGP filters. > WISP-B is getting bandwidth from Provider B. They have a /20 network. > Provider B has to allow that /20 in their BGP fitlers. > > WISP-A and WISP-B setup a peering, but also to allow failover if either > Provider goes down. Thus Provider A and Provider B both have to allow > BOTH /20 networks in their BGP filters. > > Now, for some unknown reason, WISP-B decides to start announcing > WISP-A's /20 network as local to their network. BGP will become very > confused, and thus WISP-A will essentially be down. All of this with a > single network entry by WISP-B... they just wiped out WISP-A. > > Travis > Microserv > > Zack Kneisley wrote: >> On 4/26/07, Travis Johnson <[EMAIL PROTECTED]> wrote: >>> My personal concern would be turning over my IP block to my competition. >>> They would have to have enough control to allow BGP routes from their >>> upstream. Technically they could misconfigure a router accidentally and >>> take your entire network down. :( >> >> That is what BGP filtering and prefixes are about. Either you peer >> correctly or incorrectly and don't peer. No turning over blocks >> happen. >> >>> >>> Travis >>> Microserv >>> >>> Mike Hammett wrote: >>> > If they're network peering, they'd be connecting each other's networks >>> > together to exchange local traffic that way. They could also have an >>> > alliance where if someone's Internet feeds go out, they use another >>> > WISP's Internet feed until restoration. >>> > >> >> This is great and what a reliable network is made of. -- Adam Kennedy Network Administrator Cyberlink International Phone: 888-293-3693 Fax: 888-293-3995 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
