The Cisco default metric is 10, and although you can argue whether or not
this is really necessary for a loopback interface, its only relevant if you
do say 'sh ip ro' for a hostname who's dns entry is the loopback address -
then you get 10 added to the actual metric to reach the box. As far as I
can tell this is the same on Juniper, not different. Of course, if you use
a loopback as source for load-balancing two or more circuits you may want to
explicitly zero the loopback metric.
damon.
> -----Original Message-----
> From: Jay Burns [mailto:jayburns66@hotmail.com]
> Sent: 24 May 2001 02:25
> To: juniper-nsp@puck.nether.net
> Subject: [j-nsp] ISIS metric question
>
>
> I notice if I use a Juniper for a given network node and
> configure the net
> address for an ISIS instance on the loopback, a metric 10 is
> added to path
> costs above that if I used a Cisco for the same node. Why
> would you want to
> add a cost to the loopback as if the router resides off the loopback?
>
> -Jay
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