KB.15.15

NOTE: The Base MAC address is used by the first (default) VLAN in the switch. This is usually

the VLAN named "DEFAULT_VLAN" unless the name has been changed (by using the VLAN Names

screen.) On the switches covered in this guide, the VID (VLAN identification number) for the default

VLAN is always "1," and cannot be changed.

• From the Main Menu, select

1. Status and Counters

2. Switch Management Address Information

If the switch has only the default VLAN, the following screen appears. If the switch

has multiple static VLANs, each is listed with its address data.

Figure 277 Example of the Management Address Information screen

Viewing the port and VLAN MAC addresses

The MAC address assigned to each switch port is used internally by such features as Flow Control

and the spanning-tree protocol. Using the walkmib command to determine the MAC address

assignments for individual ports can sometimes be useful when diagnosing switch operation.

Table 33 Switch series' and their MAC address allocations

MAC address allocationSwitch series

The switch allots 24 MAC addresses per slot. For a given slot, if a

four-port module is installed, the switch uses the first four MAC addresses

8212zl

in the allotment for that slot, and the remaining 18 MAC addresses are

unused.

If a 24-port module is installed, the switch uses the first 24 MAC

addresses in the allotment, and so on.

The switch's base MAC address is assigned to VLAN (VID) 1 and

appears in the walkmib listing after the MAC addresses for the ports.

(All VLANs in the switch have the same MAC address.)

All Models

NOTE: This procedure displays the MAC addresses for all ports and existing VLANs in the switch,

regardless of which VLAN you select.

1. If the switch is at the CLI Operator level, use the enable command to enter the Manager level

of the CLI.

2. Enter the following command to display the MAC address for each port on the switch:

HP Switch# walkmib ifPhysAddress

(The above command is not case-sensitive.)

Viewing the switch's MAC address assignments for VLANs configured on the switch 503