Dell Z9000, Configuration Manual

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Apply all other configurations to each interface in the redundant pair such that their configurations are
identical , so that transition to the backup interface in the event of a failure is transparent to rest of the
network.
Figure 57. Configuring Redundant Layer 2 Pairs without Spanning Tree
You configure a redundant pair by assigning a backup interface to a primary interface with the
switchport backup interface
command. Initially, the primary interface is active and transmits traffic
and the backup interface remains down. If the primary fails for any reason, the backup transitions to an
active Up state. If the primary interface fails and later comes back up, it remains as the backup interface
for the redundant pair.
Dell Networking OS supports only Gigabit, 10 Gigabit, and 40-Gigabit ports and port channels as primary/
backup interfaces in redundant pairs. (A port channel is also referred to as a link aggregation group (LAG).
For more information, refer to
Interfaces ) If the interface is a member link of a LAG, the following
primary/backup interfaces are also supported:
• primary interface is a physical interface, the backup interface can be a physical interface
• primary interface is a physical interface, the backup interface can be a static or dynamic LAG
• primary interface is a static or dynamic LAG, the backup interface can be a physical interface
• primary interface is a static or dynamic LAG, the backup interface can be a static or dynamic LAG
In a redundant pair, any combination of physical and port-channel interfaces is supported as the two
interfaces in a redundant pair. For example, you can configure a static (without LACP) or dynamic (with
Layer 2
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