Configuring Flex Links - Cisco nexus 5000 series Configuration Manual

Configuring Flex Links

Configuring Flex Links
You can configure a pair of layer 2 interfaces (switch ports or port channels) as Flex Link interfaces, where
one interface is configured to act as a backup to the other.
SUMMARY STEPS
1. switch# configure terminal
2. switch(config) # feature flexlink
3. switch(config) # interface {ethernet slot/port | port-channel channel-no }
4. switch(config-if) # switchport backup interface {ethernet slot/port | port-channel channel-no } [
multicast fast-convergence | preemption { delay delay-time | mode [ bandwidth | forced | off ] }]
5. (Optional) switch(config-if) # end
6. (Optional) switch# show interface interface-id switchport backup
7. (Optional) switch# copy running-config startup-config
DETAILED STEPS
Command or Action
Step 1 switch# configure terminal
Step 2 switch(config) # feature flexlink
Step 3 switch(config) # interface {ethernet
slot/port | port-channel channel-no }
Step 4 switch(config-if) # switchport backup
interface {ethernet slot/port |
port-channel channel-no } [ multicast
fast-convergence | preemption { delay
delay-time | mode [ bandwidth | forced |
off ] }]
Cisco Nexus 5000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.1(3)N1(1)
232
Purpose
Enters global configuration mode.
Enables Flex Link.
Specifies the Ethernet or port channel interface and enters interface
configuration mode.
The port channel range is 1 to 48.
Specifies a physical layer 2 interface (Ethernet or port channel) as the backup
interface in a Flex Link pair. When one link is forwarding traffic the other
interface is in standby mode.
• ethernet slot/port—Specifies the backup Ethernet interface. The slot
number is from 1 to 255 and the port number is from 1 to 128.
• port-channel port-channel-no—Specifies the backup port channel
interface. The port-channel-no number is from 1 to 4096.
• multicast—Specifies the multicast parameters.
• fast-convergence—Configures fast convergence on the backup
interface.
• preemption—Configures a preemption scheme for a backup interface
pair.
• delay delay-time—Specifies the preemption delay. The delay-time
range is from 1 to 300 seconds. The default is 35 seconds.
• mode—Specifies the preemption mode.
Configuring Flex Links
OL-25842-01