Reference Guide

Force10 Resilient Ring Protocol (FRRP) | 395
Troubleshooting FRRP
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.
• FRRP can be configured on Layer 2 interfaces only
• Spanning Tree (if enabled globally) must be disabled on both Primary and Secondary interfaces when
FRRP is enabled.
• When the interface ceases to be a part of any FRRP process, if Spanning Tree is enabled globally,
it must be enabled explicitly for the interface.
• The maximum number of rings allowed on a chassis is 255.
Sample Configuration and Topology
The following illustration is an example of a basic FRRP topology. Below the illustration are the
associated CLI commands.
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
R2 TRANSIT
interface GigabitEthernet 2/14
no ip address
switchport