The threshold value must be 80% of the maximum value configured for the recovery mechanism.
Note
•
Shutdown
—
If the number of addresses exceeds the maximum (MAX) value, the router sends a syslog
message and moves the bridge-domain (bdomain) to a disabled state. To restore the bridge-domain,
disable and re-enable the mac-limiting feature.
Warning
is the default action when no action is configured.
Note
The functionality of automatic error recovery is
not
supported on the Cisco ASR 900 RSP2 module.
Note
Before You Begin
SUMMARY STEPS
1.
configure terminal
2.
mac-address-table limit
bdomain id maximum num action {warning | limit | shutdown} [flood]
3.
end
4.
show mac-address-table limit [bdomain id]
5.
copy running-config startup-config
DETAILED STEPS
Purpose
Command or Action
Enter global configuration mode.
configure terminal
Step 1
Sets the specific limit and any optional actions to be imposed
at the bridge-domain level.
mac-address-table limit
bdomain id maximum num
action {warning | limit | shutdown} [flood]
Step 2
The default
maximum
value is 500.
Return to privileged EXEC mode.
end
Step 3
Displays the information about the MAC-address table.
show mac-address-table limit [bdomain id]
Step 4
(Optional) Save your entries in the configuration file.
copy running-config startup-config
Step 5
Example of Enabling Per-Bridge-Domain MAC Limiting
This example shows how to enable per-bridge-domain MAC limiting.
Layer 2 Configuration Guide for Cisco NCS 4200 Series
76
MAC Limiting
Example of Enabling Per-Bridge-Domain MAC Limiting
