From: Sam.MicroGate@usa.telekom.de
Date: Thu Oct 24 2002 - 12:14:30 GMT-3
Hello Tom,
When a routing protocol is running in an interface, the interface would be
listening to routing update from neighbors and advertising routing update to
neighbors. When you configure an interface to be passive under a routing
process, it will listen to routing updates and insert qualified routes to
the routing table. But it will never send an update out. Just listen but no
talk, just like wise people (we might call it the wise interface) The reason
that you do not use passive interface under OSPF is that OSPF does not send
or receive routes. It sends and receives LSAs. From those LSAs, they form
the routing table. Hope that this help.
Sam
-----Original Message-----
From: Tom Young [mailto:gitsyoung@yahoo.co.jp]
Sent: Thursday, October 24, 2002 1:42 AM
To: ccielab@groupstudy.com
Subject: passive-interface command
Hi, group
Sorry for a simple question about the passive-interface command, I know
in the sence of distributing different routing protocol we oftenly use the
passive-interface command, and I notice it is always rip , igrp, and eigrp
use it, (surpess rip eigrp's message to other area) for the ospf and bgp it
is always not use it, I don't know why...
If you said rip and eigrp has the broadcast or
multicast address, but the ospf also has multicast address right?
Thanks alot
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