[c-nsp] Sub-Interface Support 122.25.SEC 3750

[Andris Zarins]

VRF configuration doesnt require an interface to be in routed mode (no
switchport). You can configure VRF for 'interface VLAN' too. 

interface Vlan xxx
 description xxx
 ip vrf forwarding xxx
 ip address x.x.x.x y.y.y.y


AZ 

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Bruce Pinsky
Sent: Monday, October 10, 2005 10:19 PM
To: Alex Foster
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Sub-Interface Support 122.25.SEC 3750

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Alex Foster wrote:
> I Posted this a couple of days ago - and didn't get any feedback - so
> was just wondering if the Cisco guys on the list are aware of this -
and
> whether they have workarounds in place or a fix - I really need the
use
> of VRF with Sub-Interfaces - which would only be available in the SEC
> release - except for some reason the ability to configure
Sub-interfaces
> isn't there.....
> 
> The response you get from the switch is ....
> 
> Switch (config)#int gigabitEthernet 1/0/10.100
>                                ^
> % Invalid input detected at '^' marker.
> 
> 
> "Strange one this, not sure if its been done on purpose or whether the
> software guys have left it out by mistake - but it appears as though
> 122-25.SEC for the 3750 doesn't support sub-interfaces - 122.25.SEB
did,
> but I upgraded to SEC for VRF functionality and found I couldn't
create
> sub-interfaces - rolled back to SEB and there you have it (but no VRF,
> obviously).  Can anyone comment - or I have missed the boat and
someones
> decided that this feature is no longer of any use to anyone..."
> 
> Any help with this would be appreciated .... Regards
> 


Dumb question, but is the interface in switchport access mode?  I seem
to
recall that subinterfaces aren't allowed on "routed" ports.  And VRF
configuration requires that a port be a "routed" (layer 3) port.


http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3750/12225sec/375
0scg/swiprout.htm#wp1319235


- --
=========
bep

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