White Papers

Table Of Contents
Tagged VLAN membership is auto-configured on each FIP snooping port that sends and receives FCoE traffic and has
links with an FCF, ENode server or another FIP snooping bridge.
The default VLAN membership of the port should continue to operate with untagged frames. FIP snooping is not
supported on a port that is configured for non-default untagged VLAN membership.
FIP Snooping Restrictions
The following restrictions apply to FIP snooping on an Aggregator:
The maximum number of FCoE VLANs supported on the Aggregator is eight.
The maximum number of FIP snooping sessions supported per ENode server is 32. To increase the maximum number of
sessions to 64, use the fip-snooping max-sessions-per-enodemac command. This is configurable only in PMUX
mode.
In a full FCoE N port ID virtualization (NPIV) configuration, 16 sessions (one FLOGI + 15 NPIV sessions) are supported per
ENode. In an FCoE NPV confguration, only one session is supported per ENode.
The maximum number of FCFs supported per FIP snooping-enabled VLAN is 12.
Links to other FIP snooping bridges on a FIP snooping-enabled port (bridge-to-bridge links) are not supported on the
Aggregator.
Configuring FIP Snooping
FIP snooping is auto-configured on an Aggregator in standalone mode. You can display information on FIP snooping operation
and statistics by entering show commands. You can enable FIP snooping globally on all FCoE VLANs on a switch or on an
individual FCoE VLAN.
By default, FIP snooping is disabled.
To enable FCoE transit on the switch and configure the FCoE transit parameters on ports, follow these steps.
1. Enable the FCoE transit feature on a switch.
CONFIGURATION mode.
feature fip-snooping
2. Enable FIP snooping on all VLANs or on a specified VLAN.
CONFIGURATION mode or VLAN INTERFACE mode.
fip-snooping enable
By default, FIP snooping is disabled on all VLANs.
3. Configure the FC-MAP value used by FIP snooping on all VLANs.
CONFIGURATION VLAN or INTERFACE mode
fip-snooping fc-map fc-map-value
The default is 0x0EFC00.
The valid values are from 0EFC00 to 0EFCFF.
4. Enter interface configuration mode to configure the port for FIP snooping links.
CONFIGURATION mode
interface port-type slot/port
By default, a port is configured for bridge-to-ENode links.
5. Configure the port for bridge-to-FCF links.
INTERFACE or CONFIGURATION mode
fip-snooping port-mode fcf
NOTE: All these configurations are available only in PMUX mode.
NOTE: To disable the FIP snooping feature or FIP snooping on VLANs, use the no version of a command; for example, no
feature fip-snooping or no fip-snooping enable.
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FIP Snooping