Auto Negotiation; Broadcast Storm Control; Port Mirroring - Dell M6220 User Configuration Manual

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Auto Negotiation

Auto negotiation allows the switch to advertise modes of operation. The auto

negotiation function provides the means to exchange information between

two switches that share a point-to-point link segment, and to automatically

configure both switches to take maximum advantage of their transmission

capabilities.

PowerConnect M6220, M6348, M8024, and M8024-k switches enhance auto

negotiation by providing configuration of port advertisement. Port

advertisement allows the system administrator to configure the port speeds

that are advertised.

For information about configuring auto negotiation, see "Configuring Port

Characteristics" on page 463.

When Layer 2 frames are forwarded, 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

For information about configuring Broadcast Storm Control settings, see

"Configuring Port-Based Traffic Control" on page 687.

Port mirroring monitors and mirrors network traffic by forwarding copies of

incoming and outgoing packets from up to four source ports to a monitoring

port. The switch also supports flow-based mirroring, which allows you to copy

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. You can configure the switch to mirror flows based on

certain kinds of Layer 2, Layer 3, and Layer 4 information.

For information about configuring port mirroring, see "Monitoring Switch

Traffic" on page 369.

Switch Features

M8024 M6348 M8024-k