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Disabling Enhanced FIP Snooping Scaling

Enhanced FIP snooping scaling (introduced in Junos OS Release 12.3) scales up to 2,500 sessions and is the default FIP snooping scaling mode. On QFabric systems only, you can disable enhanced FIP snooping scaling. Disabling FIP snooping scaling reduces the number of supported FIP snooping sessions to 376 sessions.

On a QFabric system Node device in FCoE-FC gateway mode, you disable FIP snooping scaling globally on all of the Fibre Channel (FC) fabrics (fc-fabrics) on the Node device. Either all FC fabrics on a Node device use enhanced FIP snooping scaling (2,500 sessions), or all FC fabrics on a Node device disable FIP snooping scaling (376 sessions).

On an FCoE-FC gateway, you must disable FIP snooping scaling if the member interfaces of an FCoE VLAN are configured as members of an FCoE LAG and if the FC fabric is an FCoE untrusted fabric. If the FC fabric is an FCoE trusted fabric, then you do not need to disable FIP snooping scaling on the gateway.

On a QFabric system Node device in FCoE transit switch mode, you do not need to disable FIP snooping scaling. However, if needed, you can disable FIP snooping scaling on a per-VLAN basis.

Disabling FIP snooping scaling uses different commands on an FCoE-FC gateway than on an FCoE transit switch. Both procedures are included here:

  • If you configure an FCoE LAG on an FCoE untrusted gateway fabric, you must disable FIP snooping scaling. Disabling FIP snooping scaling is global and affects all FC fabrics on the gateway.

    To disable enhanced FIP snooping scaling on an FCoE-FC gateway device:

  • If you choose to disable FIP snooping scaling on an FCoE transit switch, you can disable it on individual FCoE VLANs.

    To disable enhanced FIP snooping scaling on an FCoE transit switch:

    For example, if the FCoE VLAN name is fcoe-vlan-blue:

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