Administrator Guide

Troubleshooting FRRP
To troubleshoot FRRP, use the following information.
Configuration Checks
• Each Control Ring must use a unique VLAN ID.
• Only two interfaces on a switch can be Members of the same control VLAN.
• There can be only one Master node for any FRRP group.
• You can configure FRRP on Layer 2 interfaces only.
• Spanning Tree (if you enable it globally) must be disabled on both Primary and Secondary interfaces
when you enable FRRP.
– When the interface ceases to be a part of any FRRP process, if you enable Spanning Tree globally,
also enable it explicitly for the interface.
• The maximum number of rings allowed on a chassis is 255.
Sample Configuration and Topology
The following example shows a basic FRRP topology.
Example of R1 MASTER
interface GigabitEthernet 1/24
no ip address
switchport
no shutdown
!
interface GigabitEthernet 1/34
no ip address
switchport
no shutdown
!
interface Vlan 101
no ip address
tagged GigabitEthernet 1/24,34
no shutdown
!
interface Vlan 201
no ip address
tagged GigabitEthernet 1/24,34
no shutdown
!
protocol frrp 101
interface primary GigabitEthernet 1/24
secondary GigabitEthernet 1/34 control-vlan 101
member-vlan 201
mode master
no disable
Example of R2 TRANSIT
interface GigabitEthernet 2/14
no ip address
switchport
no shutdown
!
interface GigabitEthernet 2/31
Force10 Resilient Ring Protocol (FRRP)
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