Learned MAC addresses are associated with the PWs from which the packets are received.
The learned MAC address is always inserted into the FDB as though it was learned on the local service VLAN (and not the VLAN identified in the dot1q tag in the received PW packet). MAC addresses learned from PWs use a different FDB aging timer than those MAC addresses learned on Ethernet interfaces. Different FDB aging timers are maintained for Ethernet and pseudowire Layer 2 VPN FDB entries. By default, both aging timers are set to 300 seconds. However, the aging timers for each type of FDB entry can be configured to different values. Note that PW FDB entries are not refreshed; they age out based on the configured aging timer setting, unless you have disabled the aging timer. Ethernet FDB entries automatically refresh with use, and do not age out unless they are not used for the length of time configured for the aging timer. Any MAC address associated with a PW is automatically cleared from the FDB when the PW label is withdrawn.
Note
MAC learning is disabled for VPWS.