Reference Guide

• To ensure that they are operationally active, check FIP snooping-enabled VLANs.
• Process FIP VLAN discovery requests and responses, advertisements, solicitations, FLOGI/FDISC
requests and responses, FLOGO requests and responses, keep-alive packets, and clear virtual-link
messages.
FIP Snooping in a Switch Stack
FIP snooping supports switch stacking as follows:
• A switch stack configuration is synchronized with the standby stack unit.
• Dynamic population of the FCoE database (ENode, Session, and FCF tables) is synchronized with the
standby stack unit. The FCoE database is maintained by snooping FIP keep-alive messages.
• In case of a failover, the new master switch starts the required timers for the FCoE database tables.
Timers run only on the master stack unit.
Using FIP Snooping
After you enable FcoE transit, the configuration of FIP snooping on an S5000 switch not configured as an
NPIV proxy gateway consists of the following tasks.
For more information about FIP snooping on an NPIV proxy gateway, refer to FIP Snooping on an NPIV
Proxy Gateway.
There are four steps to configure FCoE transit.
1. Enable the FCoE transit feature on a switch to maintain FIP snooping information on the switch.
2. Enable FIP snooping globally on all Virtual Local Area Networks (VLANs) or individual VLANs on a FIP
snooping bridge.
3. Configure the FC-Map value applied globally by the switch on all VLANs or an individual VLAN. The
FC-MAP value checks the first 24 bits in the MAC address in incoming FCoE frames.
4. Configure the maximum number of FIP-snooping sessions supported ont eh switch for an ENode
MAC address.
5. Configure FCF mode for a FIP snooping bridge-to-FCF link.
NOTE: The FCoE-Trusted Port mode used to connect to another FIP snooping bridge (bridge-
bridge link) is not supported on the S5000 switch.
For a sample FIP snooping configuration, refer to FCoE Transit Configuration Example.
Enable the FCoE Transit Feature
The following sections describe how to enable FCoE transit.
NOTE: FCoE transit is disabled by default. To enable FCoE transit and configure FIP snooping, follow
the steps in Configuring FIP Snooping.
When you enable FCoE transit, the switch snoops FIP packets on VLANs enabled for FIP snooping and
allows legitimate sessions. FCoE and FIP packets are dropped on VLANs disabled for FIP snooping. When
you disable FCoE transit, the S5000 operates as a pure Layer 2 switch that switches FCoE and FIP
packets.
As soon as you enable the FCoE transit feature on a switch-bridge, existing VLAN-specific and FIP
snooping configurations are applied. The FCoE database is populated when the switch connects to a
FCoE Transit
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