From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Mon Nov 08 2004 - 20:53:57 GMT-3
Are you looking for "ip rip triggered"?
<Quote>
Triggered extensions to IP RIP increase efficiency of RIP on
point-to-point, serial interfaces.
Routers are used on connection-oriented networks to allow potential
connectivity to many remote destinations. Circuits on the WAN are
established on demand and are relinquished when the traffic subsides.
Depending on the application, the connection between any two sites for
user data could be short and relatively infrequent.
There were two problems using RIP to connect to a WAN:
* Periodic broadcasting by RIP generally prevented WAN circuits from
being closed.
* Even on fixed, point-to-point links, the overhead of periodic RIP
transmissions could seriously interrupt normal data transfer because of
the quantity of information that hits the line every 30 seconds.
To overcome these limitations, triggered extensions to RIP cause RIP to
send information on the WAN only when there has been an update to the
routing database. Periodic update packets are suppressed over the
interface on which this feature is enabled.
</Quote>
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
ccie2be
Sent: Monday, November 08, 2004 3:13 PM
To: Group Study
Subject: ip rip demand-circuit
HI guys,
In the book, Cisco IP Routing by Alex Zinin, (which BTW is an excellent
detailed reference on how IOS works and processes routing info), he
talks
about the rip command, ip rip demand-circuit.
I've never seen it used and couldn't find it in the command reference.
Does this command actually exist? If so, anyone know where I can find
it
documented on cisco's site?
TIA, Tim
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