nanog mailing list archives
Re: Why doesn't BGP...
From: Ed Morin <edm () halcyon com>
Date: Sat, 9 Nov 1996 10:27:34 -0800 (PST)
Well, at a minimum you can do a "bandwidth 44210" (or whatever) as part of your router configuration to "tell" your router how fast it _can_ go. How much of this _really_ gets passed on to other nodes via BGP sessions. If you hear a route from 4 different links, aren't you simply passing on to your neighbor (filters aside for the moment) that you "know how to get to that net" regardless of which way you shove the packet at any particular time? That is, do you really pass on the destination link info as well as the net info? On Sat, 9 Nov 1996, Avi Freedman wrote:
Look, I can do a "show interface" on any interface and see what speed it's running at and if it's dropping packets. If BGP hears a route on an interface that isn't dropping packets shouldn't _that_ route be considered "best" all other things being equal (hop counts and all)? You can't tell me the router doesn't know this information because _I_ get the information from the router itself!! I understand about route instabilities, etc. All I'm talking about here is a better "tie breaker" than ordinate numbers of IP addresses.The router really can't see how fast an interface *can* go unless it's maxed out. That's not really useful information in a route-selection decision. It's possible that the packet loss might weight a better path but you would have to be careful about reweighting 20k paths every few minutes... Especially if you pass those decisions on to other routers :) Avi
Ed Morin Northwest Nexus Inc. (206) 455-3505 (voice) Professional Internet Services edm () nwnexus WA COM - - - - - - - - - - - - - - - - -
Current thread:
- Why doesn't BGP... Ed Morin (Nov 08)
- Re: Why doesn't BGP... Deepak Jain (Nov 08)
- Re: Why doesn't BGP... Ed Morin (Nov 08)
- Re: Why doesn't BGP... Avi Freedman (Nov 09)
- Re: Why doesn't BGP... Neil J. McRae (Nov 09)
- Re: Why doesn't BGP... Ed Morin (Nov 09)
- Re: Why doesn't BGP... Neil J. McRae (Nov 11)
- Re: Why doesn't BGP... Ed Morin (Nov 09)
- Re: Why doesn't BGP... Avi Freedman (Nov 09)
- Re: Why doesn't BGP... Ed Morin (Nov 09)
- Re: Why doesn't BGP... Avi Freedman (Nov 09)
- Re: Why doesn't BGP... Ed Morin (Nov 08)
- Re: Why doesn't BGP... Deepak Jain (Nov 08)
- Re: Why doesn't BGP... Neil J. McRae (Nov 11)
- Message not available
- Re: Why doesn't BGP... Dean Gaudet (Nov 09)
- Re: Why doesn't BGP... Tony Li (Nov 09)
- Re: Why doesn't BGP... Ed Morin (Nov 08)
- cisco BGP peer groups Mark Turner (Nov 08)
- Re: Why doesn't BGP... Todd Graham Lewis (Nov 08)
- Re: Why doesn't BGP... Marten Terpstra (Nov 09)