Reference Guide

966 | Layer 2
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mac learning-limit
c e s
z
Limit the maximum number of MAC addresses (static + dynamic) learned on a
selected interface.
Syntax
mac learning-limit address_limit [vlan vlan-id] [dynamic] [station-move]
Parameters
Defaults
On C-Series, the default behavior is no-station-move + static.
On E-Series, the default behavior is
station-move + static.
On S-Series, the default behavior is dynamic.
“Static” means manually entered addresses, which do not age.
Command Modes
INTERFACE
Command
History
Usage
Information
This command and its options are supported on physical interfaces, static LAGs,
LACP LAGs, and VLANs.
If the
vlan option is not specified, then the MAC address counters is not
VLAN-based. That is, the sum of the addresses learned on all VLANs (not having
any learning limit configuration) is counted against the MAC learning limit.
MAC Learning Limit violation logs and actions are not available on a per-VLAN
basis.
address_limit
Enter the maximum number of MAC addresses that can be learned
on the interface.
Range: 1 to 1000000
vlan vlan-id
E-Series only: Enter the keyword followed by the VLAN ID.
Range: 1 to 4094
dynamic
(OPTIONAL) Enter the keyword dynamic to allow aging of MACs
even though a learning limit is configured.
station-move
(OPTIONAL) Enter the keyword station-move to allow a station
move on learned MAC addresses.
Version 8.3.19.0 Introduced on S4820T.
Version 8.3.12.0 Deprecated parameter
no-station-move (replaced by mac-learning-limit
mac-address-sticky
command).
Version 8.3.7.0 Introduced on S4810
Version 8.3.1.0 Added
vlan option on E-Series.
Version 8.2.1.0 Introduced on S-Series
Version 7.7.1.0 Introduced on C-Series; added
station-move option
Version 6.5.1.0 Added support for MAC Learning-Limit on LAG