Dell S4820T, Configuration Manual

Page: 365 / 1178

If you enable DCBx and PFC mode is on (PFC is operationally up) in a port configuration, FIP snooping is
operational on the port. If the PFC parameters in a DCBx exchange with a peer are not synchronized, FIP
and FCoE frames are dropped on the port after you enable the FIP snooping feature.
For VLAN membership, you must:
• create the VLANs on the switch which handles FCoE traffic (use the
interface vlan
command).
• configure each FIP snooping port to operate in Hybrid mode so that it accepts both tagged and
untagged VLAN frames (use the
portmode hybrid
command).
• configure tagged VLAN membership on each FIP snooping port that sends and receives FCoE traffic
and has links with an FCF, ENode server, or another FIP snooping bridge (use the
tagged port-type
slot/port
command).
The default VLAN membership of the port must continue to operate with untagged frames. FIP snooping
is not supported on a port that is configured for non-default untagged VLAN membership.
Important Points to Remember
• Enable DCBx on the switch before enabling the FIP Snooping feature.
• To enable the feature on the switch, configure 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. Configure at least one FCF/bridge-to-bridge port
mode interface for any FIP snooping-enabled VLAN.
• You can configure multiple FCF-trusted interfaces in a VLAN.
• When you disable FIP snooping:
– ACLs are not installed, FIP and FCoE traffic is not blocked, and FIP packets are not processed.
– The existing per-VLAN and FIP snooping configuration is stored. The configuration is re-applied
the next time you enable the FIP snooping feature.
• You must apply the CAM-ACL space for the FCoE region before enabling the FIP-Snooping feature. If
you do not apply CAM-ACL space, the following error message is displayed:
Dell(conf)#feature fip-snooping
% Error: Cannot enable fip snooping. CAM Region not allocated for Fcoe.
Dell(conf)#
NOTE: Manually add the CAM-ACL space to the FCoE region as it is not applied by default.
To support FIP-Snooping and set CAM-ACL in the Z9500 switch, use
cam-acl l2acl 4 ipv4acl 4
ipv6acl 0 ipv4qos 2 l2qos 1 l2pt 0 ipmacacl 0 vman-qos 0 ecfmacl 0 fcoeacl 2
iscsioptacl 0
command.
CAM ACL Table
-- Chassis Cam ACL --
Current Settings(in block sizes)
1 block = 128 entries
L2Acl : 4
Ipv4Acl : 4
Ipv6Acl : 0
Ipv4Qos : 2
L2Qos : 1
L2PT : 0
IpMacAcl : 0
FCoE Transit
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