Cisco ME 3600X User Manual

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Cisco ME 3800X and ME 3600X Switch Command Reference
OL-28238-01
Chapter
switchport backup interface
switchport backup interface
To configure Flex Links, a pair of interfaces that provide backup to each other, use the switchport
backup interface command in interface configuration mode on a Layer 2 interface. To remove the Flex
Links configuration, use the no form of this command.
switchport backup interface [interface-id | GigabitEthernet interface-id | Port-channel
interface-id] {mmu primary vlan interface-id | multicast fast-convergence | preemption
{delay delay-time | mode} | prefer vlan vlan-id}
no switchport backup interface [GigabitEthernet interface-id | Port-channel interface-id]
{mmu primary vlan interface-id | multicast fast-convergence | preemption {delay
delay-time | mode} | prefer vlan vlan-id}
Note This command is not available on interfaces with service instances configured.
Syntax Description
Defaults The default is to have no Flex Links defined. Preemption mode is off. No preemption occurs. Preemption
delay is set to 35 seconds.
Command Modes Interface configuration
GigabitEthernet GigabitEthernet port name.
Port-channel Ethernet Channel interface.
interface-id Specifies that the Layer 2 interface to act as a backup link to the interface
being configured. The interface can be a physical interface or port channel.
The port-channel range is 1 to 26.
mmu primary vlan
vlan-id
MAC-address move update. Configure the MAC move update (MMU) for a
backup interface pair, using the MAC-address move update primary VLAN
ID. The VLAN range is 1 to 4094.
multicast
fast-convergence
Enables multicast Fast-convergence.
preemption Configures a preemption scheme for a backup interface pair.
delay delay-time (Optional) Specifies a preemption delay; the valid values are 1 to 300
seconds.
mode Specifies a preemption mode as bandwidth, forced, or off.
prefer vlan vlan-id Specifies that VLANs are carried on the backup interfaces of a Flex Link
pair. VLAN ID range is 1 to 4,094.
off (Optional) Specifies that no preemption occurs from backup to active.
delay delay-time (Optional) Specifies a preemption delay; the valid values are 1 to 300
seconds.

Cisco ME 3600X Specifications

General

Brand	Cisco
Model	ME 3600X
Category	Switch
Language	English