Also sprach Jeff Binkley
Thanks. I was really looking for the amount of network bandwidth, not how much memory it takes. I've already started the upgrade from 64-128 megs.
Once a BGP session is stabilized, it really uses *very* little network bandwidth. As a data point, it takes about a minute to a minute and a half to sync up a full BGP view over a T1 (someone that's checked this more recently than I might want to correct me if necessary), obviously, as you drop down bandwidth from there, the time will go up...that should give you a good data point to start with though. Once the initial sync is done, normal operation of BGP uses a miniscule amount of bandwidth. The only data that is transfered over the BGP session is route updates, meaning information is only really sent when a route changes, appears or disappears. I'm sure you can imagine that for a typical multi-homed ISP or customer, these changes will not be significant. FWIW, on my backup T1's (meaning the only traffic on them should *only* be BGP updates) the traffic rate is almost unmeasurable as far as the Cisco 5 minute input/output rate is concerned. I occasionally see them show 1000 bits/sec, 1 packets/sec, but only very briefly. It uses *that* little of traffic. -- Jeff McAdams Email: jeffm@iglou.com Head Network Administrator Voice: (502) 966-3848 IgLou Internet Services (800) 436-4456 - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.