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Dell EMC Configuration Guide for the S4048T–ON System 9.14.2.4

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Impact on Other Software Features

When you enable FIP snooping on a switch, other software features are impacted. The following table lists the impact of FIP snooping.
Table 1. Impact of Enabling FIP SnoopingImpact
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-configuration 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.

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