MPLS Commands
Page 136 7210 SAS M, T, X, R6, Mxp MPLS Configuration
Guide
adspec
Syntax [no] adspec
Context config>router>mpls>lsp
Description When enabled, the ADSPEC object will be included in RSVP messages for this LSP. The ADSPEC
object is used by the ingress LER to discover the minimum value of the MTU for links in the path of
the LSP. By default, the ingress LER derives the LSP MTU from that of the outgoing interface of the
LSP path.
Note that a bypass LSP always signals the ADSPEC object since it protects both primary paths which
signal the ADSPEC object and primary paths which do not. This means that MTU of LSP at ingress
LER may change to a different value from that derived from the outgoing interface even if the
primary path has ADSPEC disabled.
Default no adspec — No ADSPEC objects are included in RSVP messages.
Parameters
bgp-transport-tunnel
Syntax bgp-transport-tunnel include | exclude
Context config>router>mpls>lsp
Description This command allows or blocks RSVP-TE LSP to be used as a transport LSP for BGP tunnel routes.
Default bgp-transport-tunnel exclude
Parameters include — Allows RSVP-TE LSP to be used as transport LSP from the ASBR to local PE router,
from ingress PE to ASBR in the local AS or between multi-hop eBGP peers with ASBR to ASBR
adjacency.
exclude — Blocks RSVP-TE LSP to be used as transport LSP from the ASBR to local PE router,
from ingress PE to ASBR in the local AS or between multi-hop eBGP peers with ASBR to ASBR
adjacency.
cspf
Syntax [no] cspf [use-te-metric]
Context config>router>mpls>lsp
Description This command enables Constrained Shortest Path First (CSPF) computation for constrained-path
LSPs. Constrained-path LSPs are the ones that take configuration constraints into account. CSPF is
also used to calculate the detour routes when fast-reroute is enabled.
Explicitly configured LSPs where each hop from ingress to egress is specified do not use CSPF. The
LSP will be set up using RSVP signaling from ingress to egress.
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