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Re: [dc] comments and suggestions to draft-narten-nv03-overlay-problem-statment-01

AshwoodsmithPeter <Peter.AshwoodSmith@huawei.com> Fri, 27 January 2012 19:24 UTC

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From: AshwoodsmithPeter <Peter.AshwoodSmith@huawei.com>
To: Thomas Narten <narten@us.ibm.com>
Thread-Topic: [dc] comments and suggestions to draft-narten-nv03-overlay-problem-statment-01
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Date: Fri, 27 Jan 2012 19:22:02 +0000
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Cc: "dc@ietf.org" <dc@ietf.org>, "david.black@emc.com" <david.black@emc.com>, Dinesh Dutt <ddutt@cisco.com>, Linda Dunbar <linda.dunbar@huawei.com>, Paul Unbehagen <paul@unbehagen.net>, Murari Sridharan <muraris@microsoft.com>, "kreeger@cisco.com" <kreeger@cisco.com>
Subject: Re: [dc] comments and suggestions to draft-narten-nv03-overlay-problem-statment-01
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Agreed, just for clarity Shortest Path Bridging Mac-in-Mac mode (SPBM) is the one that matters in this context (DC) and SPBM 'basically' uses the PBB (mac-in-mac) datapath.

On the ENCAP location, I suppose you 'could' do the full PBB encap in a hypervisor, if that hypervisor were controlling 1000's of VMs, but otherwise the only part of the PBB encap that would make sense in the hypervisor would be perhaps to add the ISID (I-TAG) instead of (C/S-TAGs) and save the TOR the trouble of the mapping.

Peter


-----Original Message-----
From: dc-bounces@ietf.org [mailto:dc-bounces@ietf.org] On Behalf Of Thomas Narten
Sent: Friday, January 27, 2012 1:29 PM
To: AshwoodsmithPeter
Cc: dc@ietf.org; david.black@emc.com; Dinesh Dutt; Linda Dunbar; Paul Unbehagen; Murari Sridharan; kreeger@cisco.com
Subject: Re: [dc] comments and suggestions to draft-narten-nv03-overlay-problem-statment-01

> Thomas, No such beasts as PBB-V and PBB-M ;) I think you are
>  referring to SPBV and SPBM which have the properties you describe.

Indeed! Too many acronyms... Sigh. :-(

Thomas

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