Re: ISP BGP Propagation

Don't lower the timers for an internet feed ...

Depending on the platform and the amount of activity your router has, you
will be spiking your CPU frequently, unnecessarily, and in some cases
causing a reboot. ;-(

I would not normally suggest to lower the timers unless you performed some
stress testing and also checked other apps such as mcast w/ PIM, igmp etc
..., monitoring etc ...

Fast convergence can be achieved in other manners ... and for internal
networks people do sometimes lower the timers.

As mentioned earlier in this email, 2-3 minutes is not bad ... but if you
are offering services, the bottleneck is going to be DNS propagation ... so
this will need to be done in advance, else you will be waiting the 24 to 48
hours for DNS convergence.

HTH,

Andrew Lee Lissitz

2009/8/21 WW)W WWWW W <eshedalonie_at_gmail.com>

> from what I can suggest is to lower the timers of the bgp to hello 3 and 20
> seconds hold-time.
> by default is 60 seconds hello 180 hold-time.
>
> and to look in http://www.ris.ripe.net/cgi-bin/lg/index.cgi
>
> for the show ip bgp command.
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
>
>
>
>
>
>

--
Andrew Lee Lissitz
all.from.nj_at_gmail.com
Blogs and organic groups at http://www.ccie.net