Cisco Nexus 5500 Series - Switchport Backup Interface

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Cisco Nexus 5500 Series NX-OS Layer 2 Interfaces Command Reference
OL-27880-02
Chapter S Commands
switchport backup interface
switchport backup interface
To configure Flex Links, which are two interfaces that provide backup to each other, on a Layer 2
interface, use the switchport backup interface command. To remove the Flex Links configuration, use
the no form of this command.
switchport backup interface {ethernet slot/[QSFP-module/]port| port-channel channel-no}
[multicast fast-convergence | preemption {delay delay-time | mode [bandwidth | forced |
off]}]
no switchport backup interface {ethernet slot/[QSFP-module/]port| port-channel channel-no}
[multicast fast-convergence | preemption {delay delay-time | mode [bandwidth | forced |
off]}]
Syntax Description
Command Default None
Command Modes Interface configuration mode
Command History
ethernet slot/[QSFP-module/]port Specifies the backup Ethernet interface. The slot number is from
1 to 255. The QSFP-module number is from 1 to 4. The port
number is from 1 to 128.
Note The QSFP-module number applies only to the QSFP+
Generic Expansion Module (GEM).
port-channel channel-no Specifies the port channel interface. The interface number is
from 1 to 4096.
multicast (Optional) Specifies to configure the multicast parameters.
fast-convergence (Optional) Configures fast convergence on the backup interface.
preemption (Optional) Specifies to configure a preemption scheme for a
backup interface pair.
delay delay-time (Optional) Specifies a preemption delay. The range is from 1 to
300 seconds.
mode (Optional) Specifies the preemption mode.
bandwidth (Optional) Specifies that the interface with the higher available
bandwidth always preempts the backup.
forced (Optional) Specifies the interface that always preempts the
backup.
off (Optional) Specifies no preemption occurs from backup to
active.
Release Modification
6.0(2)N1(1) Support for the QSFP+ GEM was added.
5.2(1)N1(1) This command was introduced.