The configuration is the first step in making the bri 0 a backup interface
to the serial 0. However the configuration is incomplete. You can use
the bri 0 to backup the serial if it goes down, therefore it will be
replacing the serial. You can also have the bri 0 assist the serial if a
specified load is exceededon the serial. This load would be set by you,
the administrator. Therefore the bri 0 could replace the serial, if it
were to go down or it can assist the serial if there is too much traffic
on the line. These are choices for you to make. Hope I helped.
-Jay
jeongwoo park wrote:
> HI all
> what does this configuration mean?
>
> Router(config)#interface S0
> Router(config-if)#backup interface bri0
>
> Does it mean that if S0 as a primary link fails, then
> this So interface will become bri0 interface as an
> backup link?
> or
> it means that another physical interface (here,bri0)
> will be activated while S0 is down?
>
> Which one is a correct interpretation?
>
> Thanks in adv.
>
> jeongwoo
>
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