a real tricky problem w/ default route in igrp!!

From: Timur_Mirza@xxxxxxxxxxxxxxxxxx
Date: Fri Feb 16 2001 - 16:33:46 GMT-3


   

router A is an ospf/igrp router serially connected to router B, which is igrp
only

question: how can router A feed a default route to router B (since igrp is
classful, i cannot see
all the vlsm, non-/24 routes on router B)

now the trick is to feed a default route w/o using the following:

1) don't configure anything on router B
2) on router A, do not create any new networks
3) on router A, don't configure any default route on router A

i originated a default route on an ospf only router & i could see a gateway of
last resort on router A,
but it was NOT being passed to router B

next, on an ospf router & also on router A, i tried configuring an ip
default-network of a class B
network that an ospf asbr learned as an external type II route...again, I could
see a gateway of
last resort on router A, but it was NOT being passed to router B!!!

lastly, on router A, i have tried to redistribute a default route into IGRP (vi
a
 a route-map), but
it still is NOT being passed to router B - i have almost given up!

anybody got any answers? timur



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