Guidelines For Software-Controlled Redundant Ports And Port Groups; Configuring Software-Controlled Redundant Ports - Extreme Networks ExtremeWare XOS Guide Manual

is restored on that port. If you do not want the automatic restoration of the primary link when it
becomes active, disable Smart Redundancy.
Guidelines for Software-Controlled Redundant Ports and Port
Groups
Software-controlled redundant ports and port groups have the following 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 prior to 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 bi-
●
directional traffic, the recovery is immediate.
NOTE
On the BlackDiamond 10K switch, 10 Gbps modules with a serial number lower than 804405-00-09 the software
redundant port feature cover only those failures where both the TX and RX paths fail. If a single strand of fiber is
pulled on these ports, the software redundant port cannot correctly recover from the failure.To display the serial
number of the module, issue the show slot <slot_number> command. (All the modules on the Aspen 8810
switch have this serial number or higher.)

Configuring Software-Controlled Redundant Ports

When provisioning software-controlled redundant ports, configure only one side of the link as
redundant. In Figure 1 only the ports on switch C would be configured as redundant.
NOTE
In order 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.
To 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>
ExtremeWare XOS 11.1 Concepts Guide
Software-Controlled Redundant Port and Smart Redundancy
97