From: Roland Dreier <rdreier-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
To: Jason Gunthorpe
<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
Cc: Liran Liss <liranl-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org>,
Or Gerlitz <ogerlitz-hKgKHo2Ms0FWk0Htik3J/w@public.gmane.org>,
"Hefty,
Sean" <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Aleksey Senin <aleksey-192fA4vuk7xBDLzU/O5InQ@public.gmane.org>,
linux-rdma <linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"monis@voltaire.com"
<monis-smomgflXvOZWk0Htik3J/w@public.gmane.org>,
"alekseys@voltaire.com"
<alekseys-smomgflXvOZWk0Htik3J/w@public.gmane.org>,
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Subject: Re: When IBoE will be merged to upstream?
Date: Tue, 13 Jul 2010 14:20:12 -0700 [thread overview]
Message-ID: <ada8w5fxenn.fsf@roland-alpha.cisco.com> (raw)
In-Reply-To: <20100713193828.GB12614-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org> (Jason Gunthorpe's message of "Tue, 13 Jul 2010 13:38:28 -0600")
> A quibble about multicast - AFAIK this is unsolved. I think some spec
> needs to be agreed that documents what sort of multicast snooping
> operations switches need to do, ie if IGMP joins imply that IBoE
> traffic for the same DMAC is included in the join, or if IBoE requires
> a seperate IGMP type process on its own ether-type. That would make it
> much clearer what to do with MGIDs.
I agree -- the current spec is rather broken for multicast. Choosing a
different ethertype and then saying that all switches will just flood
multicast traffic is half-baked at best.
> It would be nice to at least have a plan on how to integrate a
> non-link local address, if that is ever necessary in future. An
> extended AH with an additional 48 DMAC field seems reasonable to me?
You mean have a next-hop destination + a final destination? Could be
done I guess. But I'm not sure how having a routing table where you
have to look up 48-bit Ethernet addresses is all that different from
just having a standard Ethernet forwarding table.
I suppose something based on MAC-in-MAC (a la 802.1ah) could be done but
to be honest the IBoE spec that the IBTA came up with looks rather
broken for routing.
- R.
--
Roland Dreier <rolandd-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org> || For corporate legal information go to:
http://www.cisco.com/web/about/doing_business/legal/cri/index.html
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next prev parent reply other threads:[~2010-07-13 21:20 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-20 6:18 When IBoE will be merged to upstream? Aleksey Senin
[not found] ` <AANLkTikXzoaRl61ivsc7fm8EdO9Ucz4iGGfclFOQl3kK-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-06-23 23:23 ` Roland Dreier
[not found] ` <adabpb1s58c.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-06-24 15:42 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB4439A78AFE88-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-06-24 18:05 ` Hefty, Sean
[not found] ` <CF9C39F99A89134C9CF9C4CCB68B8DDF259E7DE3D0-osO9UTpF0USkrb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-06-24 18:41 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB4439A78AFF16-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-06-24 20:37 ` Jason Gunthorpe
[not found] ` <20100624203701.GA4630-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-25 8:04 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB4439A78B0042-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-06-25 15:57 ` Jason Gunthorpe
[not found] ` <20100625155755.GC4630-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-25 16:54 ` Hefty, Sean
2010-07-01 11:50 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB4439BA54B70E-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-02 0:20 ` Hefty, Sean
[not found] ` <CF9C39F99A89134C9CF9C4CCB68B8DDF25A1002175-osO9UTpF0USkrb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-07-02 7:42 ` Jason Gunthorpe
2010-07-02 7:35 ` Jason Gunthorpe
2010-07-03 20:34 ` Roland Dreier
[not found] ` <adak4pcnw3c.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-07-04 17:03 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB443A8E048000-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-06 6:44 ` Or Gerlitz
[not found] ` <4C32D0BD.3030902-hKgKHo2Ms0FWk0Htik3J/w@public.gmane.org>
2010-07-06 11:01 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB443A8E2E552A-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-07 6:00 ` Or Gerlitz
[not found] ` <4C3417FA.7000600-hKgKHo2Ms0FWk0Htik3J/w@public.gmane.org>
2010-07-07 6:13 ` Jason Gunthorpe
2010-07-10 8:55 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB443AAB6D59C0-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-11 4:34 ` Jason Gunthorpe
[not found] ` <20100711043449.GA31404-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-07-12 7:58 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB443AACB08EA5-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-12 16:21 ` Jason Gunthorpe
[not found] ` <20100712162131.GB15392-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-07-13 8:26 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB443AACDEE865-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-13 19:31 ` Jason Gunthorpe
[not found] ` <20100713193138.GA12614-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-07-15 10:55 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB443ABB321006-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-15 16:59 ` Jason Gunthorpe
2010-07-20 5:28 ` Paul Grun
2010-07-20 17:06 ` Jason Gunthorpe
2010-07-12 16:43 ` Hefty, Sean
2010-07-12 21:20 ` Roland Dreier
[not found] ` <adatyo4xuqx.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-07-13 19:38 ` Jason Gunthorpe
[not found] ` <20100713193828.GB12614-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-07-13 21:20 ` Roland Dreier [this message]
[not found] ` <ada8w5fxenn.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-07-15 11:14 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB443ABB321050-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-15 17:21 ` Roland Dreier
[not found] ` <adalj9cveyd.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-07-15 17:53 ` Roland Dreier
2010-07-15 19:20 ` Alex Rosenbaum
[not found] ` <7E95F01E94AB484F83061FCFA35B39F87A7D2C-QfUkFaTmzUSUvQqKE/ONIwC/G2K4zDHf@public.gmane.org>
2010-07-15 20:03 ` Roland Dreier
[not found] ` <ada1vb4v7fl.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-07-20 20:50 ` Liran Liss
2010-07-15 11:00 ` Liran Liss
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