Extreme Networks ExtremeWare 7.7, Command Reference Manual

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284 ExtremeWare 7.7 Command Reference Guide
Commands for Configuring Slots and Ports on a Switch
configure ports redundant
configure ports [<portlist> | <portid>] redundant [<portlist> | <portid>]
Description
Configures a software-controlled redundant port.
Syntax Description
Default
N/A
Usage Guidelines
On a modular switch,
<portlist>
can be a list of slots and ports. On a stand-alone switch,
<portlist>
can be one or more port numbers. For a detailed explanation of port specification, see “Modular Switch
Numerical Ranges” or “Stand-alone Switch Numerical Ranges” in Chapter 1.
The first port list specifies the primary ports. The second port list specifies the redundant ports.
A software-controlled redundant port is configured to backup a specified primary port. The redundant
port tracks the link state of the associated primary port, and if the link on the primary port fails, the
redundant port establishes a link and becomes active. You can back up a specified Ethernet port with a
redundant, dedicated Ethernet port. You can also back up a load-shared group of Ethernet ports with a
set of load-shared redundant Ethernet ports. If a link in the active load-shared group fails, the entire
group fails over to the redundant group.
The following criteria must be considered when configuring a software-controlled redundant port:
• Redundant port configuration is model-specific. See your Consolidated Hardware Installation Guide for
specific switch information.
• You must manually configure the primary and redundant ports identically in terms of VLANs, QoS
settings, access lists, and so on.
• Auto-negotiation must be enabled on both the primary and redundant port.
• You cannot configure hardware redundant ports (such as ports 49 and 50 on a Summit48i) as
software controlled redundant ports.
• Only one side of the link should be configured as redundant. For example, if ports 1 and 2 are
connected between switches A and B, only switch A should be configured with redundant ports.
portlist Specifies one or more primary ports or slots and ports. On a modular switch, can be a list of slots and
ports. On a stand-alone switch, can be one or more port numbers. May be in the form 1, 2, 3-5, 2:*,
2:5, 2:6-2:8.
portid Specifies a primary port using the display string configured for the port. If this option is used to identify
the port, the redundant port must also be specified using a port id (display string).
portlist Specifies one or more redundant ports or slots and ports. On a modular switch, can be a list of slots
and ports. On a stand-alone switch, can be one or more port numbers. May be in the form 1, 2, 3-5,
2:*, 2:5, 2:6-2:8.
portid Specifies a redundant port using the display string configured for the port. This option may be used to
identify the redundant port of the primary port was specified using the port id (display string).