[c-nsp] Redundant default route, without round-robin routing

[Conaway, Aaron]

How about using object tracking?  Everything sends default traffic to
one BGP router, and, if the object is fails, the router uses a
higher-metric static that points to the other BGP router.  Of course,
that puts all the load on the primary.

http://www.cisco.com/en/US/products/sw/iosswrel/ps5413/products_feature_
guide09186a00801d862d.html

-----
Aaron Conaway
 

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net 
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of 
> Dirk-Jan van Helmond
> Sent: Thursday, September 27, 2007 10:28 AM
> To: Vincent De Keyzer
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Redundant default route, without 
> round-robin routing
> 
> Vincent,
> 
> If you want to multihome in an 'active/active' configuration, you need
> full tables...
> 
> 
> regards,
> dirk
> 
> 
> 
> 
> > Hello list,
> >
> >
> >
> > I would like your ideas to complete my design.
> >
> >
> >
> > This is an ISP network. All 10 routers in the city are 
> interconnected on a
> > /27 subnet, over which everybody has a full OSPF adjacency 
> with the DR and
> > the BDR.
> >
> >
> >
> > Two of those routers are BGP-connected to the upstream 
> providers (one
> > each).
> > The other routers are access routers, and cannot hold a 
> full BGP table;
> > they
> > hence need a default route.
> >
> >
> >
> > I was thinking of having both BGP routers advertising a 
> default route in
> > OSPF; but in this case, in order to limit packet 
> out-of-sequence problems,
> > I
> > want to make sure that every IP flow uses the same default gateway.
> >
> >
> >
> > Is there a way to ensure that? Or should I proceed 
> differently at routing
> > level (how) ?
> >
> >
> >
> > Thanks in advance,
> >
> >
> >
> > Vincent
> >
> > _______________________________________________
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> >
> 
> 
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