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Configuring FC link aggregation
Overview
FC link aggregation aggregates multiple physical FC interfaces into a logical FC aggregation group.
FC link aggregation delivers the following benefits:
• Increased bandwidth—The bandwidth of the FC aggregate interface is the total bandwidth of all
available member interfaces.
• Load sharing—Incoming/outgoing traffic is distributed across multiple member interfaces of the FC
aggregation group.
• Improved connection reliability—When a member interface goes down, the traffic on it
automatically switches over to other available member interfaces. This avoids service interruption
and improves the connection reliability of the whole FC aggregate link.
Basic concepts
FC aggregation group, member interface, and FC aggregate
interface
FC link aggregation aggregates multiple physical FC interfaces into a logical FC aggregation group. An
FC aggregation group is a group of FC interfaces, which are called member interfaces of the FC
aggregation group. For each FC aggregation group, a logical interface called an FC aggregate
interface is created. When you create an FC aggregate interface, the device automatically creates an FC
aggregation group with the same number as the FC aggregate interface.
Member interface status
A member interface in an FC aggregation group can be in either of the following states:
• Selected—A Selected member interface can forward traffic.
• Unselected—An Unselected member interface cannot forward traffic.
How FC link aggregation works
FC aggregate interface operating mode
The operating mode of an FC aggregate interface is determined as follows:
• When the configured mode of an FC aggregate interface is E, F, or NP, the operating mode of the
FC aggregate interface is the configured mode.
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