On Tue, 7 Nov 2000, Jeff McCoy wrote:
> yea..its the routing mechanism that determines the metric...but (correct me
> please) dont all routing protocols give a metric of 0 to directly connected
> networks....and therefore, the metric would be 0 in this situation
> regardless of the routing method selected?
the metric is most definitly 0, as can be witnessed by a "sh ip route
x.x.x.x" of any directly connected address.
Brian
>
> ""Howard C. Berkowitz"" <[EMAIL PROTECTED]> wrote in message
> news:p0500190cb62c956ab24a@[63.216.127.98]...
> > >If I understand correctly, both networks on the same router..different
> > >subinterfaces. If Im thinking about this correctly, the metric in the
> > >routing table will be 0 because they are both directly connected
> networks.
> > >
> > >Thoughts from anyone else?
> > >
> > >-jm
> > >
> > >""Jeff Walzer"" <[EMAIL PROTECTED]> wrote in message
> > >005501c047ff$1f8a3e00$[EMAIL PROTECTED]">news:005501c047ff$1f8a3e00$[EMAIL PROTECTED]...
> > >> Our internal network has 10 subnets that can be utilitized
> (10.10.1.x -
> > >> 10.10.10.x). The router IP address is 10.10.1.1.
> > >>
> > >> When I create a subinterface for 10.10.2.1 what is the metric for the
> > >> 10.10.2.x subnet to get to the 10.10.1.x subnet?
> > >>
> > >> Being that it is the same router will it be 1 or does each
> subinterface
> > >> increment the metric by 1 thereby making the metric 2 for each
> > >subinterface?
> > > >
> >
> > I'm unclear what you both mean when you speak of metrics. No type of
> > interface or subinterface inherently has a metric until you define a
> > routing mechanism with respect to that interface -- and that
> > mechanism defines the metric.
> >
> > So OSPF and EIGRP, in practice, use bandwidth as a metric. RIP uses
> > hop count, which may be what you are thinking of.
> >
> > The zero value for a directly connected network is the administrative
> > distance, which is different from a metric. Administrative distances
> > rank preferences among sources of routing information, lower values
> > being more preferable. For example, an OSPF route with an
> > administrative distance of 110 will never be preferred to a directly
> > connected route. A RIP route (to the same destination) will never be
> > preferred to an OSPF route.
> >
> > (note...I'm assuming here that you use the standard route selection
> > algorithms without overriding anything)
> >
> > Metric is used as a tie-breaker between routes of the same
> > administrative difference.
> >
> > Prefix length is considered before administrative distance. A route
> > of 192.168.0.0/28 from RIP is preferable to any OSPF route to
> > 192.168.0.0/24.
> >
> > _________________________________
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>
>
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-----------------------------------------------
Brian Feeny, CCNP, CCDP [EMAIL PROTECTED]
Network Administrator
ShreveNet Inc. (ASN 11881)
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