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fcoe-lag

 

Syntax

Hierarchy Level

Release Information

Statement introduced in Junos OS Release 13.2X52-D10 for the QFX Series.

Description

Configure a special link aggregation group (LAG) to transport Fibre Channel over Ethernet (FCoE) traffic and regular Ethernet traffic across the same link aggregation bundle.

An FCoE LAG ensures that FCoE traffic uses the same link within a LAG to transmit and receive information between an FCoE device and a Fibre Channel (FC) SAN switch across a QFabric system Node device. This preserves the point-to-point link emulation that FC requires. A standard LAG uses a hashing algorithm to determine the LAG link used for each communication, so with a standard LAG, you cannot guarantee that communication between an FCoE device and the QFabric system Node device always uses the same link. If communication between the FCoE device and the QFabric system Node device uses different physical links, the SAN terminates the link.

An FCoE LAG treats regular Ethernet traffic (traffic that is not FCoE traffic) in the same way as on a standard LAG, providing link redundancy and load-balancing for the regular Ethernet traffic. An FCoE LAG does not provide link redundancy or load balancing for FCoE traffic.

On FCoE-FC gateways, if the gateway has one or more untrusted FC fabrics, you must also disable FIP snooping scaling on the gateway by including the no-fip-snooping-scaling option in the [edit fc-options] hierarchy.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.