Virtual Private LAN Services
7750 SR OS Services Guide Page 797
instances associated with the B-VPLS context identified by the FEC TLV in the LDP MAC
withdraw message. This is done to speed up delivery and processing of the message.
Recognizing the PBB MAC flush, the B-VPLS only PEs 3, 4, 5 and 6 refrain from flushing their
B-VPLS FIB tables and propagate the MAC flush message regardless of their “propagate-mac-
flush” setting.
When LDP MAC withdraw reaches the terminating PBB PEs 1 and 7, the PBB-TLV information
is used to flush from the I-VPLS FIBs all CMAC entries except those associated with the
originating BMAC BM2. If specific I-VPLS ISIDs are indicated in the PBB TLV, then the PBB
PEs will flush only the CMAC entries from the specified I-VPLS except those mapped to the
originating BMAC. Flush-all-but-mine indication is not propagated further in the I-VPLS context
to avoid information loops.
The other events that trigger Flush-all-but-mine propagation in the B-VPLS (pseudowire/SDP
binding activation, Reception of an LDP MAC Withdraw) are handled similarly. The generation of
PBB MAC flush-all-but-mine in the B-VPLS must be activated explicitly on a per I-VPLS basis
with the command send-bvpls-flush all-but-mine. The generation of PBB MAC flush-all-from-
me in the B-VPLS must be activated explicitly on a per I-VPLS basis with the command send-
bvpls-flush all-from-me.
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