Thanks for your response.
I forgot to mention that primary link is frame-relay
and backup link is isdn link. Our company has HQ in
San Francisco, and 4 branch offices are located around
bay area.
Not as a network expert, but as a ccnp wannabe, I was
curious which router would initiate isdn backup link
first between HQ router and branch router. My hunch is
any router that detects link failure initiates isdn
backup link first. am l right?
Thanks in adv.
--- [EMAIL PROTECTED] wrote:
> In a message dated 10/26/00 6:09:06 PM Eastern
> Daylight Time,
> [EMAIL PROTECTED] writes:
>
>
> > Hi all
> > When the frame relay connection between HQ's
> router
> > and branch office's router failed, which router
> would
> > initiate backup link? Which router detects the
> link
> > failure first? what decides which router does
> first?
> >
>
> You should really specify what they have as backup
> in the first place. There
> are many different ways of backing up lines from HQ
> to branch. Some examples:
>
> On a router you could have serial 0 as the primary
> and then a lower bandwidth
> serial 1 as the backup. To do this, in interface s0
> you would place "backup
> int s1 0 300". The 300 being the time s1 waits to go
> back down when it
> realizes that s0 came back up.
>
> If you are using HSRP then you would have 2 devices.
> One would be the active
> and the other on standby. All info is passed through
> the main until it goes
> down and then it automatically starts going through
> the standby which has now
> become the active.
>
> These both have much more detail to them but instead
> of me going into detail,
> I'm sure you could just read up on them. The book
> would be more accurate them
> me for sure. Hope I helped...
>
> Mark Zabludovsky ~ CCNA, CCDA, 1/4-NP
> <A HREF="mailto:
> [EMAIL PROTECTED]">[EMAIL PROTECTED]</A>
>
> "If you need luck, apparently you're not
> prepared...Go study!"
>
>
> ~Mark Zabludovsky~
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