Management and Configuration Guide K/KA/KB.15.15

B MAC Address Management
Overview
The switch assigns MAC addresses in these areas:
• For management functions, one Base MAC address is assigned to the default VLAN (VID =
1.) (All VLANs on the switches covered in this guide use the same MAC address.)
• For internal switch operations: One MAC address per port.
MAC addresses are assigned at the factory. The switch automatically implements these addresses
for VLANs and ports as they are added to the switch.
NOTE: The switch’s base MAC address is also printed on a label affixed to the switch.
Determining MAC addresses
Use the CLI to view the switch's port MAC addresses in hexadecimal format.
Use the menu interface to view the switch's base MAC address and the MAC address
assigned to any VLAN you have configured on the switch. (The same MAC address is assigned
to VLAN1 and all other VLANs configured on the switch.)
NOTE: The switch's base MAC address is used for the default VLAN (VID =1) that is always
available on the switch. This is true for dynamic VLANs as well; the base MAC address is the same
across all VLANs.
Viewing the MAC addresses of connected devices
Syntax
show mac-address [ <port-list> | mac-addr | vlan vid ]
Lists the MAC addresses of the devices the switch has detected, along with the
number of the specific port on which each MAC address was detected.
Lists the MAC addresses of the devices the switch has
detected, on the specified ports.
[<port-list>]
Lists the port on which the switch detects the specified MAC
address.
[mac-addr]
Returns the following message if the specified MAC address
is not detected on any port in the switch:
MAC address mac-addr not found.
Lists the MAC addresses of the devices the switch has
detected on ports belonging to the specified VLAN, along
[vlan vid ]
with the number of the specific port on which each MAC
address was detected.
Viewing the switch's MAC address assignments for VLANs configured on
the switch
The Management Address Information screen lists the MAC addresses for:
• Base switch (default VLAN; VID=1)
• Any additional VLANs configured on the switch.
Also, the Base MAC address appears on a label on the back of the switch.
502 MAC Address Management