Cisco Cisco Gigabit Ethernet Switch Module (CGESM) for HP
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Cisco Gigabit Ethernet Switch Module for HP BladeSystem p-Class Release Notes, Cisco IOS Release 12.2(37)SE and Later
383623-009
VLAN Interfaces and MAC Addresses
VLAN Interfaces and MAC Addresses
All VLAN interfaces have assigned MAC addresses that are derived from the base MAC address. The
base MAC address is the hardware address that is on the switch label. It also appears when you enter the
show version privileged EXEC command.
base MAC address is the hardware address that is on the switch label. It also appears when you enter the
show version privileged EXEC command.
On the first VLAN interface (VLAN 1), the MAC address is the base MAC address + 0 x 40. On the next
VLAN interface that you configure, the MAC address is the base MAC address + 0 x 40 +1, and so on
for other VLAN interfaces.
VLAN interface that you configure, the MAC address is the base MAC address + 0 x 40 +1, and so on
for other VLAN interfaces.
You can enter the show interfaces vlan vlan-id privileged EXEC command to show the MAC and
IP addresses. The MAC addresses that appear in the show interfaces vlan vlan-id command output are
not the same as the MAC address that is printed on the switch label (the base MAC address).
IP addresses. The MAC addresses that appear in the show interfaces vlan vlan-id command output are
not the same as the MAC address that is printed on the switch label (the base MAC address).
By default, VLAN 1 is the interface that connects to the management network. When the switch boots
up, the DHCP client (switch) requests an IP address from a DHCP server by using the MAC address of
VLAN 1.
up, the DHCP client (switch) requests an IP address from a DHCP server by using the MAC address of
VLAN 1.
Documentation Notes
This section describes documentation notes related to this IOS release.
References to IOS Release Number
These documents refer to Release 12.2(25)SE. The correct release is Release 12.2(25)SE1.
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Cisco Gigabit Ethernet Switch Module for HP BladeSystem p-Class Software Configuration Guide,
Cisco IOS Release 12.2(25)SE
Cisco IOS Release 12.2(25)SE
•
Cisco Gigabit Ethernet Switch Module for HP BladeSystem p-Class Command Reference Guide,
Cisco IOS Release 12.2(25)SE
Cisco IOS Release 12.2(25)SE
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Cisco Gigabit Ethernet Switch Module for HP BladeSystem p-Class System Message Guide, Cisco
IOS Release 12.2(25)SE
IOS Release 12.2(25)SE
Open Caveats
These sections describe the open caveats with possible unexpected activity in this software release:
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