Administrator Guide

Table 27. Impact of Enabling FIP Snooping
Impact Description
MAC address learning MAC address learning is not performed on FIP and FCoE frames,
which are denied by ACLs dynamically created by FIP snooping on
server-facing ports in ENode mode.
MTU auto-conguration MTU size is set to mini-jumbo (2500 bytes) when a port is in
Switchport mode, the FIP snooping feature is enabled on the
switch, and FIP snooping is enabled on all or individual VLANs.
Link aggregation group (LAG) FIP snooping is supported on port channels on ports on which PFC
mode is on (PFC is operationally up).
STP If you enable an STP protocol (STP, RSTP, PVSTP, or MSTP) on
the switch and ports enter a blocking state, when the state change
occurs, the corresponding port-based ACLs are deleted. If a port is
enabled for FIP snooping in ENode or FCF mode, the ENode/FCF
MAC-based ACLs are deleted.
FIP Snooping Restrictions
The following restrictions apply when you congure FIP snooping.
The maximum number of FCoE VLANs supported on the switch 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.
The maximum number of FCFs supported per FIP snooping-enabled VLAN is twelve.
When FCoE is congured on fanned-out ports or unusable 100G ports, trac outage occurs for about 45 seconds.
Conguring FIP Snooping
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 congure the FCoE transit parameters on ports, follow these steps.
1 Congure FCoE.
FCoE conguration:
copy flash:/ CONFIG_TEMPLATE/ FCoE_DCB_Config running-config
The conguration les are stored in the ash memory in the CONFIG_TEMPLATE le.
NOTE
: DCB/DCBx is enabled when either of these congurations is applied.
2 Save the conguration on the switch.
EXEC Privilege mode.
write memory
3 Reload the switch to enable the conguration.
EXEC Privilege mode.
reload
After the switch is reloaded, DCB/DCBx is enabled.
FIP Snooping
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