From: Matt Bentley (mattdbentley@gmail.com)
Date: Tue Sep 02 2008 - 12:53:12 ART
Try this:
On each switch:
system mtu 1504 (Requires a Reload After This)
switch mode dot1q-tunnel
switch acc vlan x
l2protocol-tunnel cdp
Caveats:
-X can be any VLAN, but should be the same on both switches. Make sure that
all switches that are transit between two "end" switches know about VLANs -
like if they are all in transparent mode
-If you are doing Gig Ports on the switches, then, system mtu should be
"system mtu jumbo 1504" - jumbo affects only your gig ports
HTH
Matt Bentley
On Tue, Sep 2, 2008 at 8:42 AM, Kumar Ramalingam <kumar1901@gmail.com>wrote:
> Gurus please help,
>
> Does anyone has an example configs if i want to tunnel cdp across switches
> to make a router show its cdp neighbour is not actually the directly
> connected switch.
>
> On the cat1 that connects to r1
> interface FastEthernet0/1
> switchport access vlan 12
> switchport mode dot1q-tunnel
> l2protocol-tunnel cdp
> no cdp enable
>
> r1 --- cat1 ---trunk- cat2
>
> how would cat2 config look like if i want to make r1's cdp neigh is cat2
>
> Thanks in advace
>
> Rgds
> Kumar
>
>
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