Basic IRDP Question

From: Keith Leonard (Keith_Leonard@xxxxxxxxxxxx)
Date: Sun Apr 15 2001 - 23:07:03 GMT-3


   
Hi All,

I have a very basic question on how IRDP is supposed to work. The Doco CD
explains clearly enough how to configure this (not much to it) but doesn't
give any examples or clearly explain what the result should be.
Take the following scenario..............

R1, R2 and R3 share the same ethernet segment.....

R1:
Interface ethernet 0
  ip address 10.1.1.1 255.0.0.0
  ip irdp
  ip irdp maxadvertinterval 10
  ip irdp minadvertinterval 5
  ip irdp preference 150

R2:
Interface ethernet 0
  ip address 10.1.1.2 255.0.0.0
  ip irdp
  ip irdp maxadvertinterval 10
  ip irdp minadvertinterval 5
  ip irdp preference 100

R3:
Interface ethernet 0
  ip address 10.1.1.3 255.0.0.0

What should happen here? Should R3 see a default gateway? Should IP Routing
be disabled on R3, as if using proxy arp?
R3 is seeing the advertisements coming from R1 and R2, but that's all.
I'm probably missing some major point with this. Can anyone explain to me
what's happening here
Also, do the switches support IRDP, so as they can have some redundancy
with regards default gateways?

Thanks,
Keith
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