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BGP is Border Gateway Protocol, used on the internet both inside of and in between networks.

3
votes
Set a floating static default route on both routers as an emergency backup to everything else in case your BGP blows up. … Use soft-reconfiguration so you can tweak your policies and do a soft reset on the BGP session so you don't cause dampening of your prefixes on the other side if you completely reset (or clear) the session …
answered May 18 '13 by generalnetworkerror
0
votes
There's so much filtering between you and the LG (looking glass) that can get your prefix removed from on path or another. What's the length of your advertised prefix? Do you have PI or PA space? S …
answered May 17 '13 by generalnetworkerror
5
votes
The best you can usually do is look for communities with your provider that allow you to indicate prepends per peer of your provider. This assumes your provider has such communities and has the peeri …
answered Jun 2 '13 by generalnetworkerror
2
votes
Set up another BGP peer or route-reflector that you control with identical policies . Of course, make sure you're not blackholing any traffic toward this peer. …
answered Dec 15 '13 by generalnetworkerror
9
votes
2answers
With multiple providers peered over BGP on our Internet edge routers, I need to be able to automatically detect packet loss (primarily) and latency (secondarily), and do an interface track or something … First, what needs to be measured are at least several hops away (way past their BGP peer), so monitoring anything deep in the provider's network is not a static proposition such as monitoring our links …
asked Jun 9 '13 by generalnetworkerror
4
votes
1answer
Recently, ISP-B, a well-known tier 2 cable company, allowed a customer to start advertising a /24 over BGP that overlapped with my /27, effectively siphoning off my traffic and causing an outage. … Would it be better for me to speak BGP to ISP-A and advertise that /27 in the hope it at least reaches more of that carrier's network to minimize the chance that on-net traffic would see trouble? …
asked Dec 13 '15 by generalnetworkerror
10
votes
3answers
SP static routes to /24 to force load-balancing w/BGP /24 (floating route). SP static routes to /25s to force ECLB w/BGP /24 prefix (in RIB, but not used unless failure of /25s). … This is sort of the reverse load-balancing problem most people ask with BGP. …
asked Jun 9 '13 by generalnetworkerror