Users Guide

Table Of Contents
Supported
Releases
10.2.0E or later
show mac address-table
Displays information about the MAC address table.
Syntax
show mac address-table [address mac-address | aging-time | [count [vlan vlan-
id] | dynamic | interface {ethernet node/slot/port[:subport] | port-channel
number}]| static [address mac-address] | vlan vlan-id
Parameters
address mac-address — (Optional) Displays MAC address table information.
aging-time — (Optional) Displays MAC address table aging-time information.
count — (Optional) Displays the number of dynamic and static MAC address entries.
dynamic — (Optional) Displays dynamic MAC address table entries only.
interface — Set the interface type:
ethernet node/slot/port[:subport] — Displays MAC address table information for a physical
interface.
port-channel channel-number — Displays MAC address table information for a port-channel
interface, from 1 to 128.
static — (Optional) Displays static MAC address table entries only.
vlan vlan-id — (Optional) Displays VLAN information only, from 1 to 4093.
Default Not configured
Command Mode EXEC
Usage Information The network device maintains static MAC address entries saved in the startup configuration file, and reboots and
deletes dynamic entries.
Example
(Address)
OS10# show mac address-table address 90:b1:1c:f4:a6:8f
VlanId Mac Address Type Interface
1 90:b1:1c:f4:a6:8f dynamic ethernet1/1/3
Example (Aging
Time)
OS10# show mac address-table aging-time
Global Mac-address-table aging time : 1800
Example (Count)
OS10# show mac address-table count
MAC Entries for all vlans :
Dynamic Address Count : 5
Static Address (User-defined) Count : 0
Total MAC Addresses in Use: 5
Example
(Dynamic)
OS10# show mac address-table dynamic
VlanId Mac Address Type Interface
1 90:b1:1c:f4:a6:8f dynamic ethernet1/1/3
Example
(Ethernet)
OS10# show mac address-table interface ethernet 1/1/3
VlanId Mac Address Type Interface
1 66:38:3a:62:31:3a dynamic ethernet1/1/3
Supported
Releases
10.2.0E or later
Spanning-tree protocol
The spanning-tree protocol is a Layer 2 network protocol that prevents loops in a network topology. Spanning-tree is useful when more
than one network path exists and devices in the network are either competing for or sharing these paths.
Layer 2
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