Re: [OSPF] 答复: [Isis-wg] 答复: 答复: [sunset4] IPv6 router IDs

"Bhatia, Manav (Manav)" <manav.bhatia@alcatel-lucent.com> Fri, 30 May 2014 03:21 UTC

From: "Bhatia, Manav (Manav)" <manav.bhatia@alcatel-lucent.com>
To: Acee Lindem <acee.lindem@ericsson.com>, Xuxiaohu <xuxiaohu@huawei.com>
Thread-Topic: [OSPF] 答复: [Isis-wg] 答复: 答复: [sunset4] IPv6 router IDs
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Date: Fri, 30 May 2014 03:20:27 +0000
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Cc: "isis-wg@ietf.org" <isis-wg@ietf.org>, "fanpeng@chinamobile.com" <fanpeng@chinamobile.com>, Wes George <wesley.george@twcable.com>, Joel jaeggli <joelja@bogus.com>, OSPF List <ospf@ietf.org>, "sunset4@ietf.org" <sunset4@ietf.org>, "rtg-bfd@ietf.org" <rtg-bfd@ietf.org>, "lizhenqiang@chinamobile.com" <lizhenqiang@chinamobile.com>
Subject: Re: [OSPF] 答复: [Isis-wg] 答复: 答复: [sunset4] IPv6 router IDs
Precedence: list

Sorry for joining the party so late ..

Those of you following the BFD WG would know that BFD WG is currently being re-chartered to include S-BFD as one of the items that it will be working on.

For S-BFD to work, we need to distribute the S-BFD discriminators across the IGP routing domain. How this can be achieved with OSPF has been described in http://tools.ietf.org/id/draft-bhatia-ospf-sbfd-discriminator-00.txt

With the help of this draft S-BFD clients will know what S-BFD discriminator to use when talking to the reflector or the S-BFD server.

However, it still needs a routable IP address that it can use to set up the S-BFD session.

I believe the draft http://tools.ietf.org/html/draft-xu-ospf-ipv6-router-id-00 will help us in getting that information in the IPv6 context.

Unfortunately, the above draft uses an inappropriate TLV name and doesn’t seem to have a use-case that supports the need for such a TLV. I believe we have at least one use case where we need a "routable" IPv6 address. 

Cheers, Manav

> -----Original Message-----
> From: OSPF [mailto:ospf-bounces@ietf.org] On Behalf Of Acee Lindem
> Sent: Monday, May 12, 2014 7:10 PM
> To: Xuxiaohu
> Cc: isis-wg@ietf.org; Wes George; fanpeng@chinamobile.com; Joel
> jaeggli; OSPF List; sunset4@ietf.org; lizhenqiang@chinamobile.com
> Subject: Re: [OSPF] 答复: [Isis-wg] 答复: 答复: [sunset4] IPv6 router
> IDs
> 
> Hi Xiaohu,
> Please include the precise use cases as to WHY this is needed OSPF
> draft.
> And by precise, I don't mean just listing MPLS applications, I mean
> explaining why you need this routable address above and beyond what is
> already advertised. At least in the case of OSPF, I'm not convinced.
> Thanks,
> Acee
> 
> 
> -----Original Message-----
> From: Xuxiaohu <xuxiaohu@huawei.com>
> Date: Sunday, May 11, 2014 6:44 PM
> To: Ericsson <acee.lindem@ericsson.com>
> Cc: Karsten Thomann <karsten_thomann@linfre.de>, Anton Smirnov
> <asmirnov@cisco.com>, "isis-wg@ietf.org" <isis-wg@ietf.org>,
> "fanpeng@chinamobile.com" <fanpeng@chinamobile.com>, Wes George
> <wesley.george@twcable.com>, Joel jaeggli <joelja@bogus.com>, OSPF -
> OSPF
> WG List <ospf@ietf.org>, "sunset4@ietf.org" <sunset4@ietf.org>,
> "lizhenqiang@chinamobile.com" <lizhenqiang@chinamobile.com>
> Subject: 答复: [Isis-wg] [OSPF] 答复:  答复:  [sunset4]   IPv6 router
> IDs
> 
> >Hi Acee,
> >
> >IMHO, segment routing could work together with the RFC3464 VPN. In
> such
> >case, the segment routing just replace the role of LDP or RSVP-TE of
> >establishing a transport LSP between PE routers.
> >
> >Best regards,
> >Xiaohu

Re: [OSPF] 答复: [Isis-wg] 答复: 答复: [sunset4] IPv6 r… Acee Lindem
Re: [OSPF] 答复: [Isis-wg] 答复: 答复: [sunset4] IPv6 r… Bhatia, Manav (Manav)
Re: [OSPF] 答复: [Isis-wg] 答复: 答复: [sunset4] IPv6 r… Xuxiaohu