[c-nsp] GLBP over 802.1q subinterface

[Fred Reimer]

Yes, use the same group number on the two (or more) routers that will be
participating for a particular VLAN / subinterface.  However, on an
individual router you must use different group numbers for the different
VLANs / subinterfaces.  Technically you shouldn't have to; it's just a
limitation on how Cisco implemented it.


Fred Reimer, CISSP, CCNP, CQS-VPN, CQS-ISS
Senior Network Engineer
Coleman Technologies, Inc.
954-298-1697
  

-----Original Message-----
From: Ultra [mailto:ultramajestic at yahoo.es] 
Sent: Wednesday, December 19, 2007 1:50 PM
To: Fred Reimer
Cc: cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] GLBP over 802.1q subinterface

Thanks for your answer Fred.
So let me see if I understand everything correctly.
The steps are...
- configure 802.1q subinterfaces as usual in the routers
- configure glbp over those interfaces using the same group id for the
subinterfaces in the same vlan.

Is that correct?


El mar, 18-12-2007 a las 15:43 -0500, Fred Reimer escribió:
> Yes, of course it is.  You have to use different group numbers per
> sub-interface though.  On a 6500 with a SVI, for example, you can use the
> same group number on all of your VLAN interfaces.  For a router with
802.1q
> sub-interfaces you would have to use a different sub-interface.
> 
> HTH,
> 
> Fred Reimer, CISSP, CCNP, CQS-VPN, CQS-ISS
> Senior Network Engineer
> Coleman Technologies, Inc.
> 954-298-1697
>   
> 
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Ultra
> Sent: Tuesday, December 18, 2007 7:05 AM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] GLBP over 802.1q subinterface
> 
> Hi all,
> 
> I tried to find the answer by myself but I didn't find it.
> The question is very simple, is possible to execute GLBP over 802.1q
> subinterface? I am not sure since I don't know which is going to happen
> with STP.
> 
> Any experience with that?
> 
> The reason is that I want to create subinterfaces in order to use 802.1q
> and VRFs but I am not sure if it is going to be possible in my actual
> scenenario.
> 
> Any comments is appreciated.
> 
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 3080 bytes
Desc: not available
Url : https://puck.nether.net/pipermail/cisco-nsp/attachments/20071219/ba12bc64/attachment.bin