Users Guide

• A switch stack conguration 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.
NOTE: As a best practice, Dell Networking recommends not conguring FIP Snooping on a stacked switch.
Using FIP Snooping
There are four steps to congure 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 Congure the FC-Map value applied globally by the switch on all VLANs or an individual VLAN.
4 Congure FCF mode for a FIP snooping bridge-to-FCF link.
For a sample FIP snooping conguration, refer to Conguring FIP Snooping.
Important Points to Remember
• Enable DCBx on the switch before enabling the FIP Snooping feature.
• To enable the feature on the switch, congure FIP Snooping.
• To allow FIP frames to pass through the switch on all VLANs, enable FIP snooping globally on a switch.
• A switch can support a maximum eight VLANs. Congure at least one FCF/bridge-to-bridge port mode interface for any FIP snooping-
enabled VLAN.
• You can congure multiple FCF-trusted interfaces in a VLAN.
• When you disable FIP snooping:
– ACLs are not installed, FIP and FCoE trac is not blocked, and FIP packets are not processed.
– The existing per-VLAN and FIP snooping conguration is stored. The conguration is re-applied the next time you enable the FIP
snooping feature.
Enabling the FCoE Transit Feature
The following sections describe how to enable FCoE transit.
NOTE
: FCoE transit is disabled by default. To enable this feature, you must follow the Conguring FIP Snooping procedure.
As soon as you enable the FCoE transit feature on a switch-bridge, existing VLAN-specic and FIP snooping congurations are applied.
The FCoE database is populated when the switch connects to a converged network adapter (CNA) or FCF port and compatible DCB
congurations are synchronized. By default, all FCoE and FIP frames are dropped unless specically permitted by existing FIP snooping-
generated ACLs. You can recongure any of the FIP snooping settings.
If you disable FCoE transit, FIP and FCoE trac are handled as normal Ethernet frames and no FIP snooping ACLs are generated. The
VLAN-specic and FIP snooping conguration is disabled and stored until you re-enable FCoE transit and the congurations are re-applied.
Enable FIP Snooping on VLANs
You can enable FIP snooping globally on a switch on all VLANs or on a specied VLAN.
When you enable FIP snooping on VLANs:
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FCoE Transit