Munir: Here are some Guidelines for Software-Controlled Redundant Ports and Port Groups
Software-controlled redundant ports and port groups have the following guidelines and limitations:
- You cannot have any Layer 2 protocols configured on any of the VLANs that are present on the ports. (You will see an error message if you attempt to configure software redundant ports on ports with VLANs running Layer 2 protocols.)
- The primary and redundant ports must have identical VLAN membership.
- The master port is the only port of a load-sharing group that can be configured as either a primary or redundant port. Also, all ports on the load-sharing group must fail before the software-controlled redundancy is triggered.
- You must disable the software redundancy on the master port before enabling or disabling load sharing.
- You can configure only one redundant port for each primary port.
- Recovery may be limited by FDB aging on the neighboring switch for unidirectional traffic. For bidirectional traffic, the recovery is immediate.
Configuring Software-Controlled Redundant Ports
When provisioning software-controlled redundant ports, configure only one side of the link as redundant. To enable the software-controlled redundant port feature, the primary and redundant ports must have identical VLAN membership.
- To configure a software-controlled redundant port, use the following command:
configure ports primaryPort redundant secondaryPort {link [on | off]}The first port specified is the primary port. The second port specified is the redundant port.
- Unconfigure a software-controlled redundant port, use the following command and enter the primary port(s):
unconfigure ports port_list redundant
- To configure the switch for the Smart Redundancy feature, use the following command:
enable smartredundancy port_list
- To disable the Smart Redundancy feature, use the following command:
disable smartredundancy port_list Verifying Software-Controlled Redundant Port Configurations
You can verify the software-controlled redundant port configuration by issuing a variety of commands.
- To display the redundant ports as well as which are active or members of load-sharing groups, use the following command:
show ports redundant
- To display information on which ports are primary and redundant software-controlled redundancy ports, use the following command:
show port {mgmt | port_list | tag tag} information {detail}
