From: Kenneth Wygand (KWygand@customonline.com)
Date: Mon Mar 08 2004 - 17:55:04 GMT-3
Hey everyone,
I'm trying to implement a "router on a stick" scenario implementing a
secondary IP address instead of a sub interface. The intent is to
migrate a particular LAN segment to a new IP addressing scheme one
device at a time and have transparent connectivity across both schemes
simultaneously through this "patch implementation". I know if I enable
trunking and run sub-interfaces I can "router on a stick" the network,
but then I need to implement temporary VLANs and physically change the
configuration on each port as the device's IP address changes (what a
hassle!).
I know the reason this is not working is because the router will not
route packets back out the same logical interface it received them on
(debug ip packet shows the "encapsulation failed" messages when trying
to place the packets back on the LAN segment).
I thought policy routing the packets back out the same physical
interface by matching an extended access list for traffic crossing
between the two segments, but I received the same results.
Any ideas on how I can complete this? Here's the digger - I want to
complete this remotely so I do not have to physically go to the client's
site, so any solutions that require desktop touches are not suitable.
I know there's gotta be a way to do 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
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