3-15
Cisco Catalyst Switch Module 3110 and 3012 for IBM BladeCenter Software Configuration Guide
OL-12189-01
Chapter 3 Assigning the Switch IP Address and Default Gateway
Configuring Protected Mode
To remove the switch IP address, use the no ip address interface configuration command. If you are
removing the address through a Telnet session, your connection to the switch will be lost. To remove the
default gateway address, use the no ip default-gateway global configuration command.
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.
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.
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).
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.
For information on setting the switch system name, protecting access to privileged EXEC commands,
and setting time and calendar services, see Chapter 6, “Administering the Switch.”
Configuring Protected Mode
This section contains this information:
• Understanding Protected Mode, page 3-15
• Configuration Guidelines and Restrictions, page 3-16
• Enabling Protected Mode, page 3-16
Understanding Protected Mode
You can use the protected-mode feature to prevent the Advanced Management Module (AMM) from
controlling the standalone switch. By default, this feature is disabled, and the AMM controls the switch.
When protected mode is enabled, server administrators cannot manage or configure the switch by using
the AMM, and the AMM cannot manage configure these features and functions:
• IP addresses
• Administration of the external ports
• Management of traffic received on the external ports
• Prevention of reversion to the manufacturing-default configuration
Step 7
end Return to privileged EXEC mode.
Step 8
show interfaces vlan vlan-id Verify the configured IP address.
Step 9
show ip redirects Verify the configured default gateway.
Step 10
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
