Displaying The Mac Address Table; Mac Learning Limit - Dell S4048–ON Configuration Manual

• Create a static MAC address entry in the MAC address table.
CONFIGURATION mode
mac-address-table static

Displaying the MAC Address Table

To display the MAC address table, use the following command.
• Display the contents of the MAC address table.
EXEC Privilege mode
show mac-address-table [address | aging-time [vlan vlan-id]| count | dynamic | interface
| static | vlan]
– address: displays the specified entry.
– aging-time: displays the configured aging-time.
– count: displays the number of dynamic and static entries for all VLANs, and the total number of entries.
– dynamic: displays only dynamic entries.
– interface: displays only entries for the specified interface.
– static: displays only static entries.
– vlan: displays only entries for the specified VLAN.

MAC Learning Limit

MAC address learning limit is a method of port security on Layer 2 port-channel and physical interfaces, and VLANs. It allows you to
set an upper limit on the number of MAC addresses that learned on an interface/VLAN. After the limit is reached, the system drops
all traffic from a device with an unlearned MAC address.
This section describes the following:
• Setting the MAC Learning Limit
• mac learning-limit Dynamic
• mac learning-limit mac-address-sticky
• mac learning-limit station-move
• Learning Limit Violation Actions
• Setting Station Move Violation Actions
• Recovering from Learning Limit and Station Move Violations
Dell Networking OS Behavior: When configuring the MAC learning limit on a port or VLAN, the configuration is accepted (becomes
part of running-config and show mac learning-limit interface) before the system verifies that sufficient CAM
space exists. If the CAM check fails, a message is displayed:
%E90MH:5 %ACL_AGENT-2-ACL_AGENT_LIST_ERROR: Unable to apply access-list Mac-Limit on
TenGigabitEthernet 4/24
In this case, the configuration is still present in the running-config and show output. Remove the configuration before re-
applying a MAC learning limit with a lower value. Also, ensure that you can view the Syslog messages on your session.
NOTE: The CAM-check failure message beginning in Dell Networking OS version 8.3.1.0 is different from versions 8.2.1.1
and earlier, which read:
% Error: ACL returned error
% Error: Remove existing limit configuration if it was configured before
484
Layer 2