Re: [spring] How CRH support SFC/Segment Endpoint option?
"Joel M. Halpern" <jmh@joelhalpern.com> Sat, 23 May 2020 17:10 UTC
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To: "Chengli (Cheng Li)" <c.l@huawei.com>, 6man <6man@ietf.org>, "spring@ietf.org" <spring@ietf.org>
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From: "Joel M. Halpern" <jmh@joelhalpern.com>
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Subject: Re: [spring] How CRH support SFC/Segment Endpoint option?
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there are a number of Internet Drafts describing a range of ways of using SFC NSH with MPLS. The same choices appear to be available with CRH. If folks are interested, once CRH progresses, it should be a simple task to document that. Yours, Joel On 5/23/2020 12:59 PM, Chengli (Cheng Li) wrote: > Hi Ron, > > Thanks for your reply. > > Regarding NSH, are you saying to use CRH as a tunnel transport > encapsulation between two SFF nodes? > > Or we can use a single CRH for steering packet through all the SFF nodes > that the NSH packet should visit? > > Regarding using the first DOH, how to do that without the container > design by your draft[1]? > > Or the same option TLV will bind to different behaviors on different > nodes according to the node local configuration? > > Best, > > Cheng > > [1]. > https://tools.ietf.org/rfcdiff?url2=draft-bonica-6man-seg-end-opt-04.txt > <https://urldefense.com/v3/__https:/tools.ietf.org/rfcdiff?url2=draft-bonica-6man-seg-end-opt-04.txt__;!!NEt6yMaO-gk!UD4vf0darQ9cskFhH1fJ9jwZJ-nIciQxgVnf1219YuyyaNcgvNdRUdkjwNmXwyHT$>. > > *From:*Ron Bonica [mailto:rbonica@juniper.net] > *Sent:* Friday, May 22, 2020 10:17 PM > *To:* Chengli (Cheng Li) <c.l@huawei.com>; 6man <6man@ietf.org>; > spring@ietf.org > *Cc:* spring@ietf.org > *Subject:* RE: How CRH support SFC/Segment Endpoint option? > > Cheng, > > The sole purpose of a Routing header is to steer a packet along a > specified path to its destination. It shouldn’t attempt to do any more > than that. > > The CRH does not attempt to deliver service function information to > service function instances. However, it is compatible with: > > -The Network Service Header (NSH) > > -The Destination Options header that precedes the Routing header > > Both of these can be used to deliver service function information to > service function instances. > > Ron > > Juniper Business Use Only > > *From:*Chengli (Cheng Li) <c.l@huawei.com <mailto:c.l@huawei.com>> > *Sent:* Friday, May 22, 2020 2:56 AM > *To:* 6man <6man@ietf.org <mailto:6man@ietf.org>>; spring@ietf.org > <mailto:spring@ietf.org>; Ron Bonica <rbonica@juniper.net > <mailto:rbonica@juniper.net>> > *Cc:* spring@ietf.org <mailto:spring@ietf.org> > *Subject:* How CRH support SFC/Segment Endpoint option? > > *[External Email. Be cautious of content]* > > Hi Ron, > > When reading the CRH draft, I have a question about how CRH support SFC? > > For example, we have a SID List [S1, S2, S3, S4, S5], and S3 is a SFC > related SID, how to indicate that? By PSSI? [1] > > But how to know which segment endpoint node/egress node should process > this PSSI? At the beginning of the SRm6 design, this is described in > [2]. But you deleted the containers [2]. > > Without that, I don’t really understand how SFC can be supported. > > Best, > > Cheng > > [1]. > https://tools.ietf.org/html/draft-bonica-spring-sr-mapped-six-01#section-4.1 > <https://urldefense.com/v3/__https:/tools.ietf.org/html/draft-bonica-spring-sr-mapped-six-01*section-4.1__;Iw!!NEt6yMaO-gk!UD4vf0darQ9cskFhH1fJ9jwZJ-nIciQxgVnf1219YuyyaNcgvNdRUdkjwP15i-Xa$> > > [2]. > https://tools.ietf.org/rfcdiff?url2=draft-bonica-6man-seg-end-opt-04.txt > <https://urldefense.com/v3/__https:/tools.ietf.org/rfcdiff?url2=draft-bonica-6man-seg-end-opt-04.txt__;!!NEt6yMaO-gk!UD4vf0darQ9cskFhH1fJ9jwZJ-nIciQxgVnf1219YuyyaNcgvNdRUdkjwNmXwyHT$>. > > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- >
- [spring] How CRH support SFC/Segment Endpoint opt… Chengli (Cheng Li)
- Re: [spring] How CRH support SFC/Segment Endpoint… Ron Bonica
- Re: [spring] How CRH support SFC/Segment Endpoint… Sander Steffann
- Re: [spring] How CRH support SFC/Segment Endpoint… James Guichard
- Re: [spring] How CRH support SFC/Segment Endpoint… Sander Steffann
- Re: [spring] How CRH support SFC/Segment Endpoint… Pengshuping (Peng Shuping)
- Re: [spring] How CRH support SFC/Segment Endpoint… Joel M. Halpern
- Re: [spring] How CRH support SFC/Segment Endpoint… Joel M. Halpern
- Re: [spring] How CRH support SFC/Segment Endpoint… Ron Bonica
- Re: [spring] How CRH support SFC/Segment Endpoint… Chengli (Cheng Li)
- Re: [spring] How CRH support SFC/Segment Endpoint… Joel M. Halpern
- Re: [spring] How CRH support SFC/Segment Endpoint… Chengli (Cheng Li)
- Re: [spring] How CRH support SFC/Segment Endpoint… Nick Hilliard
- Re: [spring] How CRH support SFC/Segment Endpoint… Ron Bonica
- [spring] Reply: RE: How CRH support SFC/Segment E… Chengli (Cheng Li)
- Re: [spring] How CRH support SFC/Segment Endpoint… Robert Raszuk
- Re: [spring] How CRH support SFC/Segment Endpoint… Brian E Carpenter
- Re: [spring] How CRH support SFC/Segment Endpoint… Robert Raszuk
- Re: [spring] How CRH support SFC/Segment Endpoint… Tom Herbert
- Re: [spring] How CRH support SFC/Segment Endpoint… Robert Raszuk
- Re: [spring] How CRH support SFC/Segment Endpoint… Brian E Carpenter
- Re: [spring] How CRH support SFC/Segment Endpoint… Joel M. Halpern
- Re: [spring] How CRH support SFC/Segment Endpoint… James Guichard
- Re: [spring] How CRH support SFC/Segment Endpoint… Joel M. Halpern
- Re: [spring] How CRH support SFC/Segment Endpoint… Tom Herbert
- Re: [spring] How CRH support SFC/Segment Endpoint… James Guichard
- Re: [spring] How CRH support SFC/Segment Endpoint… Joel Halpern Direct
- Re: [spring] Reply: RE: How CRH support SFC/Segme… Ron Bonica
- Re: [spring] How CRH support SFC/Segment Endpoint… Ron Bonica
- Re: [spring] How CRH support SFC/Segment Endpoint… Chengli (Cheng Li)
- Re: [spring] How CRH support SFC/Segment Endpoint… Ron Bonica
- Re: [spring] How CRH support SFC/Segment Endpoint… Robert Raszuk
- Re: [spring] How CRH support SFC/Segment Endpoint… Xiejingrong (Jingrong)