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

[Dirk-Jan van Helmond]

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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