Configuring the Cajun P550 Switch (Layer 2 & Layer 3)

Table 3-5describes the Fast Ethernet port parameters:

Table 3-5.Fast Ethernet (10/100) Port Parameters

 

 

Parameter

Definition

 

 

Name

A user-assigned name for this port (possibly a drop name or the

 

name of the station or other device connected to the port).

 

 

Category

Allows you to select either User Port or Service Port.

 

• The User Port is intended for use with switch connections to

 

end user nodes.

 

• The Service Port is intended for use with switch connections

 

to servers or other switches. The Service Port allows the

 

switch to generate both log messages and alarm messages

 

(traps). The User Port only generates log messages,

 

preventing your network management station from being

 

overwhelmed by port up/down messages that result from

 

users turning workstations on and off.

 

 

Speed Mode

Allows you to select the speed of the port manually (to either 10

 

or 100 Mb/s). If auto-negotiation is enabled, this setting is

 

ignored.

 

 

Duplex Mode

Allows you set the port duplex mode (half- or full-duplex). If

 

auto-negotiation is enabled, this setting is ignored.

 

 

Flow Control Mode

Determines if flow control is used on this port. For half-duplex

 

links, active backpressure jams the sending Ethernet channel

 

until the port’s buffers can receive more packets. This prevents

 

lost or dropped packets.

 

For full-duplex links, IEEE 802.3z pause control allows the port

 

to stop a sending station from sending more packets if the

 

receiving port’s buffers are full.

 

For TX and FX ports, there is an additional option for Enable

 

with Aggressive Backoff. This option limits the size of the bursts.

 

Flow Control is recommended for use primarily on end-station

 

connections. Using this flow control on trunk ports can cause

 

unnecessary congestion on the network.

 

 

Auto Negotiation

Allows you to set the port to auto-negotiate a speed and duplex

Mode

mode. Auto-negotiate works best when the connection on the

 

other end of the link is set to auto-negotiate as well. If you set a

 

port to auto-negotiate, and the connection is not successful, set

 

the port speed and duplex mode manually.

 

 

Auto Negotiation

Determines what information the port advertises when it starts

Speed/Duplex

auto-negotiating. In most cases, 10/100 and Half/Full are the

Advertisement

best settings, but there may be cases when you want to

 

auto-negotiate one parameter, while keeping the other fixed.

 

 

Cajun P550/P220 Switch Operation Guide

3-11