Reference Guide

Force10 Resilient Ring Protocol | 339
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
Figure 18-3 is an example of a basic FRRP topology. Below the figure are the associated CLI commands.
Figure 18-3. Basic Topology and CLI commands
show frrp summary EXEC or EXEC PRIVELEGED Show the state of all FRRP groups.
Ring ID: 1-255
Command Syntax Command Mode Purpose
Ring Direction
Primary
Forwarding
GigE 1/24
Primary
Forwarding
GigE 2/14
Secondary
Blocking
GigE 1/34
Primary
Forwarding
GigE 3/21
Secondary
Forwarding
GigE 2/31
Secondary
Forwarding
GigE 3/14
R2
TRANSIT
R3
TRANSIT
R1
MASTER