From: syv (syv@911networks.com)
Date: Tue Oct 15 2002 - 14:28:20 GMT-3
On Tuesday, October 15, 2002, Azhar Mehmood wrote:
Characteristics of dialer watch:
* Watches specific routes in the routing table and initiates
backup link if the route is missing
* Encapsulation independent
* Evaluates status of primary link based on the existence of
routes to the peer. Hence it considers primary link status
based on the ability to pass traffic to the peer
Does not rely on interesting packets to trigger dialing
Dialing the backup link is done immediately when the primary
route is lost
* Dependent on the routing protocol convergence time
only IGRP/EIGRP/OSPF supported
* Supports multiple router backup scenario
* Bandwidth on demand is not possible since the route to the
peer will exist regardless of the load on the primary link
Triggered by:
1. Interesting packets defined with DDR
2. Connection loss on primary interface
3. Traffic threshold being exceeded
-----Original Message-----
AM> Hi,
AM> I have a router R1 ehich has 3 exit points to reach a specific subnet:
AM> 1. Ethernet
AM> 2. Serial
AM> 3. ISDN
AM> As long the route over ethernet is available it's prefered over all other, after it has gone serial is prefered and as third option the ISDN Link.
AM> Now my problem is how to keep ISDN Link down until both of the primary links are available. I tried to acomplish it with dialer watch but as soon as the ethernet is gone dialer watch triggers the
AM> call hence it brings it also down again after idle-timeou
AM> t.
AM> My question is how to configure the router that it waits until both of the link 're unavailable and triggering than an isdn call.
AM> regards
AM> AZHAR MEHMOOD
AM> GERMANY
Thanks
-- syv@911networks.com
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