mac-address withdrawal

In a VPLS context on a bridge domain (BD), removes MAC addresses that have been dynamically learned, thus providing faster convergence.

Syntax

mac-address withdrawal
no mac-address withdrawal

Command Default

MAC address withdrawal is disabled.

Modes

Bridge-domain configuration mode

Usage Guidelines

A MAC address withdrawal message is sent with a MAC list Type Length Value (TLV). 200 MAC addresses are bulked and sent in one MAC TLV message.

Note

Note

The MAC withdrawal support is only for explicit MAC addresses in a MAC withdrawal TLV. An empty MAC list, as well as the sending of a MAC withdrawal TLV to a specific subset of peers, is not supported.

The maximum number of MAC addresses supported is 5000 in a 5-second interval. The remaining MAC addresses in the attachment circuit (AC) logical interface (LIF) are not sent. After the 5-second interval, another LIF "down" event triggers a MAC withdrawal message for a new-5 second interval.

MAC withdrawal is supported for both VPLS and MCT-VPLS. MPLS signals the MAC withdraw TLV to all the peers.

Use the no form of this command to disable MAC address withdrawal.

Examples

The following example enables MAC address withdrawal on a BD.

device# configure terminal
device(config)# bridge-domain 10
device(config-bridge-domain-10)# mac-address withdrawal

Example

The following example illustrates output of the show bridge-domain command confirming that withdrawal is enabled.

device# show bridge-domain
Bridge-domain 1
-------------------------------
Bridge-domain Type: MP , VC-ID: 0
Number of configured end-points: 0 , Number of Active end-points: 0
VE if-indx: 0, Local switching: TRUE, bpdu-drop-enable: TRUE
MAC Withdrawal: Enabled
PW-profile: default, mac-limit: 0
Total VPLS peers: 0 (0 Operational):