Re: [isp-bgp] BGP Newbie Help - Config Review

[Pete Templin <petelists@...>]

Jim Barstow wrote:

> The outbound and inbound traffic will traverse UUNet primarily, then should
> traverse Sprint in the event of a failover.
> In a static routing world, I would...
> 0.0.0.0/0 -> UUNet
> 0.0.0.0/0 -> Sprint Metric 2
Right.  But now you're in the BGP world.  Perhaps BGP default from 
Sprint, so that anything not learned from UUNet would go to Sprint. 
Optional BGP default from UUNet, YMMV.

> Regarding mask lengths, I have the supernet entered in my router as 2 /24s,
> do I need to advertise them like this?
> 204.180.198.0/24
> 204.180.199.0/24
> 63.169.171.0/24
Unless you have a need to externally route the two /24s differently, the 
Internet will thank you if you leave the network statement as is, and 
add "ip route 204.180.198.0 255.255.254.0 null0 225" to your router, so 
that the route is always up and BGP can announce it.  I'd also recommend 
the same for the last /24, just so interface flaps don't translate into 
BGP flaps.

pt





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