IGRP

Well, you guessed it. I have started in on IGRP. And maybe I am confused about the autonomous system numbers...

I have a setup as follows

192.168.x.x 255.255.255.0

PC1

RouterA

RouterB

PC2
101.2

101.1--1.1

1.2

100.1

100.2

I set up IGRP with an AS of 100 on the routers and voila, it worked perfectly. Everyone could ping.

So I then "no router igrp 100" routerA and setup IGRP to use AS 101 on routerA. Waited 90 seconds, and weird. PC1 could still ping PC2! Why? I thought the AS numbers would not share information???

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Comments

malcybood

Some routing protocol changes require a reboot....

I had a similar issue with OSPF when I put a loopback address on my ospf configuration. It didn't pick up the change until I done a copy run start then "reload". After I done this it picked the loopback addresses in OSPF

Daniel333

Huh, saved and rebooted. Still works. I am betting it's something with the simulator.

I tried in with my real routers and it could not ping, as expected. Looks like a glitch in the Boston sim.

thanks!