Cisco Catalyst 2960-XR Configuration Guide

Configuration Examples for Flex Links
Configuring Flex Links: Examples
This example shows how to verify the configuration after you configure an interface with a backup interface:
Switch# show interface switchport backup
Switch Backup Interface Pairs:
Active Interface Backup Interface State
------------------------------------------------------------------------
GigabitEthernet1/0/1 GigabitEthernet1/0/2 Active Up/Backup Standby
This example shows how to verify the configuration after you configure the preemption mode as forced for
a backup interface pair:
Switch# show interface switchport backup detail
Switch Backup Interface Pairs:
Active Interface Backup Interface State
------------------------------------------------------------------------
GigabitEthernet1/0/211 GigabitEthernet1/0/2 Active Up/Backup Standby
Interface Pair : Gi1/0/1, Gi1/0/2
Preemption Mode : forced
Preemption Delay : 50 seconds
Bandwidth : 100000 Kbit (Gi1/0/1), 100000 Kbit (Gi1/0/2)
Mac Address Move Update Vlan : auto
Related Topics
Configuring a Preemption Scheme for a Pair of Flex Links, on page 155
Configuring Flex Links, on page 154
Flex Links, on page 148
Default Flex Links and MAC Address-Table Move Update Configuration, on page 153
Restrictions for Configuring Flex Links and MAC Address-Table Move Update, on page 147
Configuring a Preemption Scheme for a Pair of Flex Links, on page 155
Configuring Flex Links, on page 154
Configuring VLAN Load Balancing on Flex Links: Examples
In the following example, VLANs 1 to 50, 60, and 100 to 120 are configured on the switch:
Switch(config)# interface gigabitethernet 2/0/6
Switch(config-if)# switchport backup interface gigabitethernet 2/0/8 prefer vlan 60,100-120
When both interfaces are up, Gi2/0/8 forwards traffic for VLANs 60 and 100 to 120 and Gi2/0/6 forwards
traffic for VLANs 1 to 50.
Switch# show interfaces switchport backup
Switch Backup Interface Pairs:
Catalyst 2960-XR Switch Layer 2 Configuration Guide, Cisco IOS Release 15.0(2)EX1
OL-29424-01 161
Configuring Flex Links and the MAC Address-Table Move Update Feature
Configuration Examples for Flex Links

Cisco Catalyst 2960-XR Specifications

General

Stacking Bandwidth	80 Gbps
Layer Support	Layer 2 and Layer 3
Jumbo Frame Support	9198 bytes
RAM	512 MB
Input Voltage	100-240V AC
Model	Catalyst 2960-XR
Uplink Interfaces	4 x 1G SFP or 2 x 10G SFP+
Downlink Interfaces	24 or 48 x Gigabit Ethernet ports
Power Supply	Internal
MAC Address Table Size	16, 000 entries
PoE	Available on PoE models
Weight	4.5 kg
Features	energy efficiency
Stacking	Up to 8 switches
Operating Temperature	0 to 45°C