Detailed Descriptions Of Mpls-Tp; Mpls-Tp Lsps; Mpls-Tp On Pseudowires - Alcatel-Lucent 7210 SAS M User Manual

Detailed Descriptions of MPLS-TP

MPLS-TP LSPs

The 7210 SAS supports the configuration of MPLS-TP tunnels, which comprise a working and,
optionally, a protect LSP. In 7210 SAS, a tunnel is referred to as an LSP, while an MPLS-TP LSP
is referred to as a path. It is then possible to bind an MPLS-TP tunnel to an SDP.
MPLS-TP LSPs (that is, paths) with static labels are supported. MPLS-TP is not supported for
signaled LSPs.
Both bi-directional associated (where the forward and reverse directions of a bidirectional LSP are
associated at a given LER, but may take different routes through the intervening network) and
bidirectional co-routed (where the forward and reverse directions of the LSP are associated at each
LSR, and take the same route through the network) are possible in MPLS-TP. However, only
bidirectional co-routed LSPs are supported.
It is possible to configure MPLS-TP identifiers associated with the LSP, and MPLS-TP OAM
parameters on each LSP of a tunnel. MPLS-TP protection is configured for a tunnel at the level of
the protect path level. Both protection and OAM configuration is managed through templates, in
order to simplify provisioning for large numbers of tunnels.
The 7210 SAS plays the role of either an LER or an LSR.

MPLS-TP on Pseudowires

MPLS-TP is supported on PWs with static labels. The provisioning model supports RFC6370-
style PW path identifiers for MPLS-TP PWs.
MPLS-TP PWs reuse the static PW provisioning model of previous 7210 SAS releases. The
primary distinguishing feature for an "MPLS-TP" PW is the ability to configure MPLS-TP PW
path identifiers, and to support MPLS-TP OAM and static PW status signaling.
The 7210 SAS can perform the role of a T-PE for a PW with MPLS-TP. The 7210 SAS-R6 can
perform the role of S-PE for MPLS-TP PW. The 7210 SAS-T does not support S-PE functionality.
A spoke-SDP with static PW labels and MPLS-TP identifiers and OAM capabilities can use an
SDP that uses either an MPLS-TP tunnel, or that uses regular RSVP-TE LSPs. The control word is
supported for all MPLS-TP PWs.
7210 SAS M, T, X, R6, Mxp MPLS Configuration Guide
MPLS and RSVP
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