BGP Default Route

Sun Sep 15 15:03:52 UTC 2002

On Sat, Sep 14, 2002 at 02:18:15PM -0400, Lupi, Guy wrote:

> I was wondering how people tend to generate default routes to
> customers running bgp.

Short answer: don't

Longer answer: To solve the exact problems you mention below,
only advertise a aggregate block of your own to this customer,
say x.x.0.0/16, then the customer will configure his device
something like

ip route 0.0.0.0 0.0.0.0 x.x.0.0

or

set routing-options static route 0.0.0.0/0 next-hop x.x.0.0 resolve

This will ensure that if the border router get's isolated, it will no
longer advertise x.x.0.0/16 to the customer, and the customer router can
choose a backup path.

/Jesper

-- 
Jesper Skriver, jesper(at)skriver(dot)dk  -  CCIE #5456
Senior network engineer @ AS3292, TDC Tele Danmark

One Unix to rule them all, One Resolver to find them,
One IP to bring them all and in the zone to bind them.