18-9
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Chapter 18 Configuring Flex Links and the MAC Address-Table Move Update Feature
Configuring Flex Links and MAC Address-Table Move Update
This example shows how to configure an interface with a backup interface and to verify the
configuration:
Switch# configure terminal
Switch(conf)# interface fastethernet0/1
Switch(conf-if)# no shutdown
Switch(conf-if)# switchport backup interface fastethernet0/2
Switch(conf-if)# end
Switch# show interface switchport backup
Switch Backup Interface Pairs:
Active Interface Backup Interface State
------------------------------------------------------------------------------------------
FastEthernet0/1 FastEthernet0/2 Active Up/Backup Standby
FastEthernet0/3 FastEthernet0/4 Active Up/Backup Standby
Port-channel1 GigabitEthernet0/1 Active Up/Backup Standby
Beginning in privileged EXEC mode, follow these steps to configure a preemption scheme for a pair of
Flex Links:
Step 4
switchport backup interface interface-id Configure a physical Layer 2 interface (or port channel)
as part of a Flex Link pair with the interface. When one
link is forwarding traffic, the other interface is in standby
mode.
Step 5
end Return to privileged EXEC mode.
Step 6
show interface [interface-id] switchport backup Verify the configuration.
Step 7
copy running-config startup config (Optional) Save your entries in the switch startup
configuration file.
Command Purpose
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id Specify the interface, and enter interface configuration
mode. The interface can be a physical Layer 2 interface or
a port channel (logical interface). The port-channel range
is 1 to 48.
Step 3
no shutdown Enable the port, if necessary. By default, UNIs and ENIs
are disabled, and NNIs are enabled.
Step 4
switchport backup interface interface-id Configure a physical Layer 2 interface (or port channel)
as part of a Flex Link pair with the interface. When one
link is forwarding traffic, the other interface is in standby
mode.
Step 5
switchport backup interface interface-id preemption
mode {forced | bandwidth | off}
Configure a preemption mechanism and delay for a Flex
Link interface pair. You can configure the preemption as:
• forced—the active interface always preempts the
backup.
• bandwidth—the interface with the higher bandwidth
always acts as the active interface.
• off—no preemption happens from active to backup.
To Next Page
Loading...
Need help?
General
