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

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

Parameter

Definition

 

 

Rate Limit Mode

Prevents the switch from overwhelming the output buffer on

 

lower-speed ports by placing a threshold on the percentage of

 

port traffic that can be flooded packets (unknown unicasts and

 

multicasts). You can optionally include known multicast packets

 

in this percentage to further decrease the possibility of the port’s

 

output buffer being overwhelmed.

 

 

Rate Limit Rate

Determines the percentage of a port’s forwarded traffic that can

 

be unknown unicast and multicast (flooded). Lower this value if

 

the port has overflow problems.

 

 

Rate Limit Burst Size

Determines the limit of packets allowed in a single burst.

 

Accepted values are 1 to 2048. For Fast Ethernet ports, set this

 

value lower than 1024 (output buffer capacity). Lower this

 

value if the port has overflow problems.

 

 

Port PACE Priority

Determines if the port detects 3Com’s proprietary PACE format

 

as packets pass through the port. PACE allows a packet’s priority

 

(higher priority packets move through the switch before lower

 

priority packets) to be set at the adapter.

 

 

Using the All Ports Configuration Dialog Box

The All Ports Configuration dialog box allows you to apply the same parameter settings to all switch ports for P220 switches and in a module for the P550 using a single command.

To set all ports in a module:

1.In the System Configuration section of the Web Agent window, select Modules & Ports. The Module Information dialog box opens.

2.In the Ports column, click the number for the module you want to configure (for example, 10 for 100Base-FX). The Port Configuration dialog box opens.

3.Click All Module Switch Ports Configuration. The All Ports Configuration dialog box opens.

4.Set port parameters as described beginning in “Configuring Physical Port Parameters on Gigabit Ports” and/or “Configuring Physical Port Parameters on Fast Ethernet Ports”, earlier in this chapter.

5.Click APPLY to save your changes, or CANCEL to restore previous settings.

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Cajun P550/P220 Switch Operation Guide