From: Scott Morris (swm@emanon.com)
Date: Mon Nov 03 2003 - 04:24:12 GMT-3
There's nothing like a ping test for it that I'm aware of, but you can
do conditional routing within the default-originate command where a
particular route has to be said to exist within the routing table
otehrwise the default route isn't sent out. You could use the serial
link to your ISP if you wanted, or a particular BGP listing or something
to test availability.
Access-list 1 permit 111.111.111.0 0.0.0.255 (this is the route I'm
watching for, or my connected interface)
Route-map MyCondition permit 10 (this sets the condition on which to do
things)
match ip address 1
(within a routing protocol, because many support this)
Default-information originate route-map MyCondition (as long as the
condition exists, the 0/0 route is sent. If it doesn't, it won't be.)
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
CISSP, JNCIS, et al.
IPExpert CCIE Program Manager
IPExpert Sr. Technical Instructor
swm@emanon.com/smorris@ipexpert.net
http://www.ipexpert.net
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Gary Lileikis
Sent: Sunday, November 02, 2003 3:50 PM
To: ccielab@groupstudy.com
Subject: High Internet Availability without BGP
Greetings,
Does anyone know of a Cisco feature that will allow you to test for
Internet connectivity using something like a ping test to various
Internet sites to check for Internet connectivity. If the connectivity
is available, seed a default route into your internal network. If
connectivity disappears do not seed a default.
Thanks,
Gary Lileikis
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