[c-nsp] DHCP Route Tracking in the 870 Series

[Jason Link]

Actually - I think I figured it out.  

Anyway, I was trying to install the tracked dhcp route like this:

Ip route 0.0.0.0 0.0.0.0 dhcp track 123

Since the 877 switch ports are standard L2 ports, you need to set
everything up with vlans.  Vlan3 is my outside / dhcp vlan.  

Since dhcp isn't an actual interface, you can't track it as such.  But,
you can create a BVI, put vlan3 into that BVI, and track that BVI.

So, this spears to work:

Ip route 0.0.0.0 0.0.0.0 bvi2 track 123

I haven't tested it yet though, so I'm not certain it will work.  I will
give it a shot later.



-----Original Message-----
From: Arie Vayner (avayner) [mailto:avayner at cisco.com] 
Sent: Monday, April 27, 2009 1:19 AM
To: Jason Link
Subject: RE: [c-nsp] DHCP Route Tracking in the 870 Series

Jason,

Can you share the show ver please?
I have a feeling it might be a license/feature set thing...

Arie

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Jason Link
Sent: Monday, April 27, 2009 02:15
To: Cisco-nsp
Subject: [c-nsp] DHCP Route Tracking in the 870 Series

Hello all,

I've got a situation that requires tracking (and removing) the
DHCP-added default-gateway route in an 877.  In the documentation
(http://www.cisco.com/en/US/tech/tk648/tk361/technologies_configuration_
example09186a00808d2b72.shtml) this is done via "ip route 0.0.0.0
0.0.0.0 dhcp track 123".  When I try to enter the command as above, the
"track" option is not available.  I'm using the same version of IOS as
the above example, with the exception that the hardware is an 877 and
not an 1811.  This leads me to believe the issue is related to the
hardware, as in its not available on the 877.

Am I missing something?

Thanks!
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