| elping 2002-06-25, 10:25 pm |
| yes you can ...if they have the same metrics
doan wrote:
> I don't think you can have 2 same routes (same # of bits) in the routing
> table.
>
> Doan
>
> On Mon, 24 Jun 2002, Thomas Kuborn wrote:
>
> > Yooo,
> >
> > If you have 2 routes (matching the same # bits) in your routing table,
> > then AD is first used as a differentiator, then metric is used.
> > 1. # bits matched
> > 2. AD
> > 3. metric
> > In your example, the OSPF route will be used
> >
> > Tom
> >
> > doan wrote:
> >
> > > I think the longest match has higher priority. You have to think of
> > > routing as a two step process: building the routing table and selecting
> > > a route in the routing table. In building the routing table, a router
> > > will select a route with the best administrative distance, e.g. OSPF
> > > is better than RIP. Since different prefix-lengths are considered as
> > > different routes, they will all be installed in the routing table
> > > regardless of what routing protocol (ad. distance) they were learned
> > > from. In selecting a route from the routing table, the longest match
> > > is the rule, administrative distance is no longer an issue here.
> > >
> > > Doan
> > >
> > > On Sun, 23 Jun 2002, Jason Thomas wrote:
> > >
> > >
> > >>Another question, if you all don't mind.
> > >>
> > >>Can anyone tell me which has higher priority administrative distance or
> > >>longest prefix match.
> > >>
> > >>Meaning is EIGRP knows of a route to a host and matches 22 bits and OSPF
> > >>knows a route and matches 24 bits would the router pick the EIGRP route or
> > >>the OSPF route.
> > >>
> > >>I just need a bit of clarification
> > >>
> > >>Thanks,
> > >>Jason
> > >>
> > >>
> > >>
> > >>
> > >
> >
> >
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