IGRP issue ?

From: Markus Haas (mh@xxxxxxxxxxxxx)
Date: Sat Apr 07 2001 - 13:09:32 GMT-3


   
I'am playing with secoundary adressen an IGRP.

That's my interface configuration:

R3#sh run int ser 0
Building configuration...

Current configuration:
!
interface Serial0
 bandwidth 1984
 ip address 10.1.30.2 255.255.255.0 secondary
 ip address 10.1.10.2 255.255.255.252
 no ip directed-broadcast
 encapsulation frame-relay
 no keepalive
 frame-relay map ip 10.1.10.2 100 broadcast
 frame-relay map ip 10.1.30.2 100 broadcast
 frame-relay interface-dlci 100

When I look to the FIB on the router I see this:

I 10.1.30.0/30 [100/9040] via 10.1.30.1, 00:00:03, Serial0
C 10.1.30.0/24 is directly connected, Serial0

Why have I two routing entries in the table. Because of the different
subnetmasks on the same interface ?
I seems that IGRP takes also the subnetmask from the primary interface for
the secoundary interface and probagate it to all IGRP speakers.

Is this a normal issue, or only IGRP related ?

Markus



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