Administrator Guide

78 Switch Feature Overview
Storm Control
When layer-2 frames are processed, broadcast, unknown unicast, and
multicast frames are flooded to all ports on the relevant virtual local area
network (VLAN). The flooding occupies bandwidth and loads all nodes
connected on all ports. Storm control limits the amount of broadcast,
unknown unicast, and multicast frames accepted and forwarded by the
switch.
For information about configuring Broadcast Storm Control settings, see
"Port-Based Traffic Control " on page 849.
Port Mirroring
Port mirroring mirrors network traffic by forwarding copies of incoming and
outgoing packets from multiple source ports to a monitoring port. Source
ports may be VLANs, Ethernet interfaces, port-channels, or the CPU port.
The switch also supports flow-based mirroring, which allows copying certain
types of traffic to a single destination port. This provides flexibility—instead
of mirroring all ingress or egress traffic on a port the switch can mirror a
subset of that traffic. The switch can be configured to mirror flows based on
certain kinds of layer-2, layer-3, and layer-4 information.
Dell Networking N-Series switches support RSPAN destinations where traffic
can be tunneled across the operational network. RSPAN does not support
configuration of the CPU port as a source.
For information about configuring port mirroring, see "Monitoring Switch
Traffic " on page 519.
Static and Dynamic MAC Address Tables
Static entries can be added to the switch’s MAC address table and the aging
time can be configured for entries in the dynamic MAC address table. Entries
can also be searched in the dynamic table based on several different criteria.
For information about viewing and managing the MAC address table, see
"MAC Addressing and Forwarding " on page 1083.