From: Tom Rogers (cccie71@yahoo.com)
Date: Tue Jun 22 2004 - 13:39:10 GMT-3
As long as 3550 has routing "ENABLED", NATing and STATIC route and Redistribution done on Router connected to 3550, peolple from inside your network will be able to ping.
But it will not work the other way around.
Tom
Kenneth Wygand <KWygand@customonline.com> wrote:
Hey Mike,
The CAT will not need to know how to get back to any other routers,
since all packets will appear to the CAT as sourced from its directly
connected interface (same VLAN as r5's E0/1) - so it knows how to send
back to R5, then R5 'un-nat's' the packet back and forwards it
appropriately to its final destination.
You are correct in that the CAT itself will not be able to initiate any
connections to other routers, but it will be able to respond back due to
the NATing.
Kenneth E. Wygand
Systems Engineer, Project Services
CISSP #37102, CCNP, CCDP, ACSP, Cisco IPT Design Specialist, MCP, CNA,
Network+, A+
Custom Computer Specialists, Inc.
"The only unattainable goal is the one not attempted."
-Anonymous
-----Original Message-----
From: MMoniz [mailto:ccie2002@tampabay.rr.com]
Sent: Tuesday, June 22, 2004 11:44 AM
To: ccie2be; Kenneth Wygand; Group Study
Subject: RE: Routing without routing protocol
Well the problem you are going to have with this solution is that since
you
cannot disable routing and put
a default gateway on the Cat, your Cat is not going to know how to get
back
to the other routers, regardless
if you do NAT.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
ccie2be
Sent: Tuesday, June 22, 2004 11:28 AM
To: Kenneth Wygand; Group Study
Subject: Re: Routing without routing protocol
Hey Ken,
I think your answer fits the bill. Of all the things I thought of
yesterday, none of them, (irdp, default network,etc) would do the trick
and
fulfill the requirements. I hope I remember that solution on my next
attempt this Friday.
Thanks, Tim
----- Original Message -----
From: "Kenneth Wygand"
To: "ccie2be" ; "Group Study"
Sent: Tuesday, June 22, 2004 10:39 AM
Subject: RE: Routing without routing protocol
Tim,
How about providing a static route on R5 pointing to the Loopback
interface on the 3550. Then NAT all traffic on R5 destined for the
3550's Loopback interface through E0/1 to the IP address on its E0/1
interface, which the 3550 will see as directly connected.
If you need your 3550 to be able to initiate pings to other addresses
and you are not allowed a static default, you can do that by disabling
IP routing and providing a default gateway to R5's E0/1 (provided the
rules allow this).
Kenneth E. Wygand
Systems Engineer, Project Services
CISSP #37102, CCNP, CCDP, ACSP, Cisco IPT Design Specialist, MCP, CNA,
Network+, A+
Custom Computer Specialists, Inc.
"The only unattainable goal is the one not attempted."
-Anonymous
-----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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