From: MMoniz (ccie2002@tampabay.rr.com)
Date: Tue Jun 22 2004 - 12:32:48 GMT-3
Actually you would need to enable IRDP on R5 so it will produce IRDP
messages. The Cat will listen to these
as it will be the client.
IRDP has the capability to "intercept" rip and igrp messages but this is not
a requirement.
IRDP actually uses ICMP for messaging as the name implies. Here is a link
for it.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fipr
_c/ipcprt1/1cfipadr.htm#1001945
Mike
-----Original Message-----
From: ccie2be [mailto:ccie2be@nyc.rr.com]
Sent: Tuesday, June 22, 2004 11:17 AM
To: MMoniz; Group Study
Subject: Re: Routing without routing protocol
Hey Mike,
Option isn't allowed - the instructions explicitly told me to enable ip
routing on the 3550.
Re: irdp. I thought of that this morning but I thought if irdp were used, it
would have to be on the 3550. However, since there's no routing protocol
running on the link between the 3550 and R5, there wouldn't be any routing
updates to listen for.
Also, if I remember correctly, irdp only listens for rip or igrp updates and
only ospf is running on R5.
I think there's still something else I'm missing.
Thanks, I'm sure I'll find out, Tim
----- Original Message -----
From: "MMoniz" <ccie2002@tampabay.rr.com>
To: "ccie2be" <ccie2be@nyc.rr.com>; "Group Study" <ccielab@groupstudy.com>
Sent: Tuesday, June 22, 2004 10:28 AM
Subject: RE: Routing without routing protocol
> Well I would say you have basically 2 options here.
>
> 1. Use IRDP on R5
>
> 2. Disable IP routing on the Cat and configure a default-gateway. This is
> not a static route or a static network!!
>
> Mike
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> ccie2be
> Sent: Tuesday, June 22, 2004 10:10 AM
> To: Group Study
> Subject: Routing without routing protocol
>
>
> Hi All,
>
> This one got me.
>
> 3550 has routing enabled but no routing protocols enabled.
>
> It's only path to the rest of the network is via R5. All other routers on
> the
> other side of R5 must be able to ping the 3550's loopback.
>
> I'm allowed to use one static route on R5.
>
> This is what it looks like:
>
> 3550 lo0 fa0/5 ------- e0/1 R5 ----- rest of network
>
> How do I provide reachabiltiy to the 3550's lo0 without violating lab
rules
> ie
> no default routes or default networks and
> no static routes except the one explicitly allowed here?
>
> Please tell me what I'm missing. Thanks, Tim
>
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