MPLS and RSVP
7450 ESS MPLS Guide Page 63
Figure 11: MPLS-TP LSR
Detailed Descriptions of MPLS-TP
MPLS-TP LSPs
SR OS supports the configuration of MPLS-TP tunnels, which comprise a working and,
optionally, a protect LSP. In SROS, 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 (i.e. paths) with static labels are supported. MPLS-TP is not supported for
signaled LSPs.
Both bidirectional 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 via templates, in order
to simplify provisioning for large numbers of tunnels.
al_0225
TP LSP
MPLS-TP MPLS-TP
BFD CC/V
LSP-Ping
Linear Protection
MEP, BFD (LSP) and
Protection Endpoint
MIP
VCCV-Ping
Static-PW Status
MPLS-TP Side
MPLS-TP Identifiers
Static LSP
BFD CC/CV
Linear Protection
On-Demand CV
Static PW
Static PW Status
PW Redundancy
On-Demand CV
PW (Static)
LSP Label Swap
LSP MIP
IP LSP
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