[mpls] 答复: [CCAMP] Question regarding RFC 7260

Fatai Zhang <zhangfatai@huawei.com> Thu, 23 February 2017 03:30 UTC

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From: Fatai Zhang <zhangfatai@huawei.com>
To: Naveen T <naveen.thanikachalam@yahoo.in>, "ccamp@ietf.org" <ccamp@ietf.org>, Mpls <mpls@ietf.org>
Thread-Topic: [CCAMP] Question regarding RFC 7260
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Date: Thu, 23 Feb 2017 03:29:49 +0000
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Hi Naveen,

Per RFC 7487,  I think there should be GMPLS control plane for OAM configuration purpose.





Thanks

Fatai

发件人: CCAMP [mailto:ccamp-bounces@ietf.org] 代表 Naveen T
发送时间: 2017年2月22日 21:50
收件人: ccamp@ietf.org; Mpls
主题: [CCAMP] Question regarding RFC 7260

Dear Authors, et al.,

RFC 7260<https://tools.ietf.org/html/rfc7260> describes the procedures for OAM configuration and control via RSVP-TE. RFC 7467<https://tools.ietf.org/html/rfc7487> further extends this to provide procedures to configure pro-active OAMs like BFD, FMS etc.

I have a query regarding the usage of RSVP-TE to carry the OAM configurations from the MPLS-TP tunnel ingress to the tunnel egress.
Considering that the MPLS-TP bi-directional LSP has been established statically and the requirement is to only signal the OAM entities, I have the following assumptions:
1.      An IGP path must be established between the MPLS-TP tunnel's ingress and egress LERs.
2.      The MPLS-TP node_id of and LER/LSR, defined here<https://tools.ietf.org/html/rfc6370#section-4>-4>, will also be configured as that LER's/LSR's loopback interface's address.
3.      The IGP will ensure that each LER/LSR learns about all the LSRs/LERs along the MPLS-TP transport path.
4.      RSVP-TE will use this IGP path to send/receive the PATH/RESV messages.

Are these assumptions correct?
Or, should there be a GMPLS control-plane adjacency between LERs/LSRs along the MPLS-TP path with the TE links on these nodes acting as the MPLS-TP NNI interfaces?

Thanks and Regards,
Naveen T