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

Refer to Table 3-4 for more information on the Gigabit port parameters.

6.In the Name field, enter a port name.

7.If this is an end-station port, from the Category pull-down menu, select User Port. For trunk ports, select Service Port.

8.From the Flow Control Mode pull-down menu, select Enable to use flow control to prevent buffer overflows. Disable this feature only when flow control is causing congestion in other areas of the network.

9.From the Pace Priority Mode pull-down menu, select Enable to recognize and use 3Com’s PACE priority mechanism.

10.From the Remote Fault Detect pull-down menu, select Enable to detect remote link errors.

Notes:

•The remote fault detection functionality should be enabled (on both ends of a Cajun to Cajun link) in two cases. The first case is when two Cajun gigabit ports are connected that do not support auto-negotiation. The second case is when a Cajun gigabit port that does not support auto-negotiation is connected to a Cajun gigabit port that does support auto-negotiation. If two gigabit ports that support auto-negotiation are connected, you should enable auto-negotiation.

•Auto-negotiation and remote fault detection cannot be enabled concurrently. Auto-negotiation must be disabled in order to enable remote fault detection. When auto-negotiation is enabled, remote fault detection is automatically disabled.

•For GMAC1 gigabit modules, auto-negotiation is always disabled.

11.Click APPLY to save your changes, or CANCEL to restore previous settings. Table 3-4 describes the gigabit port parameters:

 

Table 3-4.Gigabit 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 primary difference between the User and Service Port

 

designation is that a Service Port allows the switch to generate

 

both log messages and alarm messages (traps). The User Port

 

only generates log messages. This prevents your network

 

management station from being overwhelmed by port up/down

 

messages that result from users turning workstations on and off.

 

 

3-8

Cajun P550/P220 Switch Operation Guide