Cisco Systems WSC2960X48TDL manual Interface Speed and Duplex Mode

Configuring Interface Characteristics

Interface Speed and Duplex Mode

Feature

EtherChannel (PAgP)

Port blocking (unknown multicast and unknown unicast traffic)

Broadcast, multicast, and unicast storm control

Protected port

Port security

Port Fast

Auto-MDIX

Power over Ethernet (PoE)

Keepalive messages

Default Setting

Disabled on all Ethernet ports.

Disabled (not blocked).

Disabled.

Disabled.

Disabled.

Disabled.

Enabled.

Note The switch might not support a pre-standard powered device—such as Cisco IP phones and access points that do not fully support IEEE 802.3af—if that powered device is connected to the switch through a crossover cable. This is regardless of whether auto-MIDX is enabled on the switch port.

Enabled (auto).

Disabled on SFP module ports; enabled on all other ports.

Interface Speed and Duplex Mode

Ethernet interfaces on the switch operate at 10, 100, or 1000 Mb/s and in either full- or half-duplex mode. In full-duplex mode, two stations can send and receive traffic at the same time. Normally, 10-Mb/s ports operate in half-duplex mode, which means that stations can either receive or send traffic.

Switch models include Gigabit Ethernet (10/100/1000-Mb/s) ports and small form-factor pluggable (SFP) module slots supporting SFP modules.

Speed and Duplex Configuration Guidelines

When configuring an interface speed and duplex mode, note these guidelines:

•Gigabit Ethernet (10/100/1000-Mb/s) ports support all speed options and all duplex options (auto, half, and full). However, Gigabit Ethernet ports operating at 1000 Mb/s do not support half-duplex mode.

•For SFP module ports, the speed and duplex CLI options change depending on the SFP module type:

Catalyst 2960-X Switch Interface and Hardware Component Configuration Guide, Cisco IOS Release 15.0(2)EX

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