Virtual Private LAN Services
7750 SR OS Services Guide Page 461
This VC-ID is used instead of a label to identify a virtual circuit.The VC-ID is significant between
peer SRs on the same hierarchical level. The value of a VC-ID is conceptually independent from the
value of the label or any other datalink specific information of the VC.
The no form of this command disables the VC-ID.
Default none
Values 1 — 4294967295
disable-aging
Syntax [no] disable-aging
Context config>service>vpls
config>service>vpls>spoke-sdp
config>service>vpls>sap
Description This command disables MAC address aging across a VPLS service or on a VPLS service SAP or
spoke SDP.
Like in a Layer 2 switch, learned MACs can be aged out if no packets are sourced from the MAC
address for a period of time (the aging time). In each VPLS service instance, there are independent
aging timers for local learned MAC and remote learned MAC entries in the VPLS forwarding
database (FDB). The disable-aging command turns off aging for local and remote learned MAC
addresses.
When no disable-aging is specified for a VPLS, it is possible to disable aging for specifc SAPs and/
or spoke SDPs by entering the disable-aging command at the appropriate level.
When the disable-aging command is entered at the VPLS level, the disable-aging state of individual
SAPs or SDPs will be ignored.
The no form of this command enables aging on the VPLS service.
Default no disable-aging
disable-learning
Syntax disable-learning
no disable-learning
Context config>service>vpls
config>service>vpls>sap
config>service>vpls>spoke-sdp
Description This command enables learning of new MAC addresses in the VPLS forwarding database (FDB) for
the service instance, SAP instance or spoke SDP instance.
When disable-learning is enabled, new source MAC addresses will not be entered in the VPLS
service forwarding database. This is true for both local and remote MAC addresses.
When disable-learning is disabled, new source MAC addresses will be learned and entered into the
VPLS forwarding database.
This parameter is mainly used in conjunction with the discard-unknown command.
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