probably Cisco needs a knob very similar to vendor Juniper out-delay. you can delay the time between when BGP and the routing table exchange route information.
http://www.juniper.net/techpubs/software/junos/junos73/swconfig73-routing/html/bgp-config58.html#1016387 Regards, Masood > On Mon, Nov 23, 2009 at 09:10:25AM +0100, Gert Doering wrote: >> "bgp update-delay <n>" >> >> "the bgp update-delay command is used to tune the maximum time the >> software will wait after the first neighbor is established until it >> starts calculating best paths and sending out advertisements". >> >> Now, what does "maximum time" mean? Will it wait, or will it not? >> >> The documentation that I found claims that the default value is "120", >> which would certainly not agree with the observed behaviour. OTOH, >> Marco claims that he has seen "0" as a default... > > The docs make it look like more of a graceful-restart specific timer, > not like advertisement-interval (intentionally delaying the propagation > of new updates to try and consolidate them) or the "on-startup" delay > behaviors available in the IGPs. > > http://www.cisco.com/en/US/products/ps6550/products_white_paper09186a008016317c.shtml > > The "bgp update-delay n" command may be entered on the Cisco NSF-capable > router. The update-delay specifies the time interval- after the first > peer has reconnected during which the restarting router expects to > receive all BGP updates and the EOR marker from all of its configured > peers. The default value of n is 120 seconds, and n is always measured > in seconds. If the restarting router has a large number of peers, each > with a large number of updates to be sent, this value may need to be > increased from its default value. > > -- > Richard A Steenbergen <[email protected]> http://www.e-gerbil.net/ras > GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC) > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
