Alcatel-Lucent 7750 SR Manual page 712

Virtual Private LAN Services
VPLS SDP Commands
mesh-sdp
Syntax mesh-sdp sdp-id[:vc-id] [vc-type {ether | vlan}]
no mesh-sdp sdp-id[:vc-id]
Context config>service>vpls
Description This command binds a VPLS service to an existing Service Distribution Point (SDP). Mesh SDPs
bound to a service are logically treated like a single bridge "port" for flooded traffic where flooded
traffic received on any mesh SDP on the service is replicated to other "ports" (spoke SDPs and SAPs)
and not transmitted on any mesh SDPs.
Note that this command creates a binding between a service and an SDP. The SDP has an operational
state which determines the operational state of the SDP within the service. For example, if the SDP is
administratively or operationally down, the SDP for the service will be down.
The SDP must already be defined in the config>service>sdp context in order to associate the SDP
with a valid service. If the sdp sdp-id is not already configured, an error message is generated. If the
sdp-id does exist, a binding between that sdp-id and the service is created.
SDPs must be explicitly associated and bound to a service. If an SDP is not bound to a service, no far-
end 7750 SR devices can participate in the service.
The no form of this command removes the SDP binding from the service. The SDP configuration is
not affected; only the binding of the SDP to a service. Once removed, no packets are forwarded to the
far-end router.
Default No sdp-id is bound to a service.
Special Cases VPLS — Several SDPs can be bound to a VPLS. Each SDP must be destined to a different router. If
two sdp-id bindings terminate on the same 7750 SR, an error occurs and the second SDP is binding is
rejected.
Parameters sdp-id — The SDP identifier.
vc-id — The virtual circuit identifier. This value is used to validate the VC ID portion of each mesh
vc-type — This command overrides the default VC type signaled for the spoke or mesh binding to
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Values
1 — 17407
SDP binding defined in the service. The default value of this object is equal to the service ID.
Values
1 — 4294967295
the far end of the SDP. The VC type is a 15 bit-quantity containing a value which represents the
type of VC. The actual signaling of the VC type depends on the signaling parameter defined for
the SDP. If signaling is disabled, the vc-type command can still be used to define the dot1q value
expected by the far-end provider equipment. A change of the bindings VC type causes the
binding to signal the new VC type to the far end when signaling is enabled.
VC types are derived according to IETF draft-martini-l2circuit-trans-mpls.
• The VC type value for Ethernet is 0x0005.
7750 SR OS Services Guide