Virtual Leased Line Services
7210 SAS-X, R6 OS Services Guide Page 157
pseudowires. All commands and functions that are applicable to spoke-sdps in today’s
implementation are supported, except for those that explicitly depend on an LDP session on the
SDP or as stated below. Likewise, all existing functions on a given service SAP are supported if
the spoke-sdp that it is matched to is MPLS-TP.
The following describes how to configure MPLS-TP on an Epipe VLL. However, similar
configuration applies to other VLL types.
A spoke-sdp bound to an SDP with the mpls-tp keyword cannot be no shutdown unless the
ingress label, the egress label, the control word, and the pw-path-id are configured.
*7210SAS>config>service>epipe# info
----------------------------------------------
sap 1/1/10:1.111 create
exit
spoke-sdp 1:111 create
ingress
vc-label 2111
exit
egress
vc-label 2111
exit
control-word
pw-path-id
agi 0:111
saii-type2 4294967295:0.0.0.42:111
taii-type2 4294967295:0.0.0.43:111
exit
no shutdown
exit
no shutdown
----------------------------------------------
*7210SAS>config>service>epipe#
The pw-path-id context is used to configure the end-to-end identifiers for a MS-PW. These may
not coincide with those for the local node if the configuration is at an S-PE. The saii and taii are
consistent with the source and destination of a label mapping message for a signaled PW.
The control-channel-status command enables static PW status signaling. This is valid for any
spoke-sdp where signaling none is configured on the SDP (for example, where T-LDP signaling
is not in use). The refresh timer is specified in seconds, from 10-65535, with a default of 0 (off).
This value can only be changed if control-channel-status is shutdown. Commands that rely on
PW status signaling are allowed if control-channel-status is configured for a spoke-sdp bound to
an SDP with signaling off, but the system will use control channel status signaling rather than T-
LDP status signaling. The ability to configure control channel status signaling on a given spoke-
sdp is determined by the credit based algorithm described below. Control-channel-status for a
particular PW only counts against the credit based algorithm if it is in a no shutdown state and has
a non-zero refresh timer.
Note that a shutdown of a service will result in the static PW status bits for the corresponding PW
being set.
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