Re: [IPv6 SR] Regarding 128 bits IPv6 address in Segment List of SRH
Brian E Carpenter <brian.e.carpenter@gmail.com> Thu, 09 February 2017 22:48 UTC
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Subject: Re: [IPv6 SR] Regarding 128 bits IPv6 address in Segment List of SRH
To: Mark Smith <markzzzsmith@gmail.com>, Veerendranatha Reddy Vallem <veerendranatharv@huawei.com>
References: <73BFDDFFF499304EB26FE5FDEF20F7885086FA74@blreml501-mbx> <CAO42Z2wuibtYx39tJFAKJ=TdcWLe8tCQHz9YSbaeUHFyJSb8rw@mail.gmail.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
Message-ID: <6496ee1a-fa7c-8599-947a-663e112a61ae@gmail.com>
Date: Fri, 10 Feb 2017 11:48:45 +1300
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Cc: "draft-ietf-ospf-ospfv3-segment-routing-extensions@tools.ietf.org" <draft-ietf-ospf-ospfv3-segment-routing-extensions@tools.ietf.org>, "ospf@ietf.org" <ospf@ietf.org>, 6man WG <ipv6@ietf.org>, "draft-ietf-6man-segment-routing-header@ietf.org" <draft-ietf-6man-segment-routing-header@ietf.org>
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Mark, On 10/02/2017 08:26, Mark Smith wrote: > On 10 Feb. 2017 03:02, "Veerendranatha Reddy Vallem" < > veerendranatharv@huawei.com> wrote: ... >> If Link local address is Link local, how we can use this address in SRH header, >> since IPv6 destination address should not be link local address as per >> IPv6 protocol. > > I'd be curious where you might have got that idea from. > LL addresses are perfectly fine as destination addresses, including for > application traffic. They're even preferred over global and ULA addresses > by default when there is a choice from a set. Right, but if an SR header is travelling off-link, which I think must often be the case, it would be doubleplus ungood to include a LL address, which is meaningless off-link. So probably using a LL address in SRH needs to be strictly limited. Brian > Many of the advantages of LLs for end-user applications would also apply to > network applications such as SR. > > "How to use IPv6 Link-Local Addresses in Applications" > https://tools.ietf.org/html/draft-smith-ipv6-link-locals-apps-00 > > Regards, > Mark. > > > > If Adj-Sid is global ipv6 address, means we need to consider “global > ipv6 interface address” of the neighbor on the link? > > > > Regards, > > Veerendranath > > > > > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- > > > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- >
- [IPv6 SR] Regarding 128 bits IPv6 address in Segm… Veerendranatha Reddy Vallem
- Re: [IPv6 SR] Regarding 128 bits IPv6 address in … Stefano Previdi (sprevidi)
- Re: [IPv6 SR] Regarding 128 bits IPv6 address in … Mark Smith
- Re: [IPv6 SR] Regarding 128 bits IPv6 address in … Brian E Carpenter
- Re: [OSPF] [IPv6 SR] Regarding 128 bits IPv6 addr… Acee Lindem (acee)
- RE: [IPv6 SR] Regarding 128 bits IPv6 address in … Veerendranatha Reddy Vallem
- Re: [OSPF] [IPv6 SR] Regarding 128 bits IPv6 addr… Stefano Previdi (sprevidi)
- Re: [IPv6 SR] Regarding 128 bits IPv6 address in … Stefano Previdi (sprevidi)
- RE: [IPv6 SR] Regarding 128 bits IPv6 address in … Veerendranatha Reddy Vallem
- RE: [IPv6 SR] Regarding 128 bits IPv6 address in … Veerendranatha Reddy Vallem
- Re: [IPv6 SR] Regarding 128 bits IPv6 address in … Stefano Previdi (sprevidi)
- Re: [IPv6 SR] Regarding 128 bits IPv6 address in … Brian E Carpenter
- Re: [IPv6 SR] Regarding 128 bits IPv6 address in … Stefano Previdi (sprevidi)
- RE: [IPv6 SR] Regarding 128 bits IPv6 address in … Veerendranatha Reddy Vallem
- Re: [IPv6 SR] Regarding 128 bits IPv6 address in … Stefano Previdi (sprevidi)
- Re: [IPv6 SR] Regarding 128 bits IPv6 address in … Brian E Carpenter