Tuning Your Switch Performance (Layer 2 & Layer 3)

Table 13-1.Buffer Management Parameters

Parameter

Definition

 

 

Fabric Port Buffers

Displays the port’s fabric port buffers and allows you to open the

 

Buffer Detail Configuration dialog box for the selected module.

 

Service ratios:

 

•

3 to 1

 

•

99 to 1

 

•

999 to 1

 

• 9999 to 1

 

 

Physical Port Buffers

Displays the port’s physical port buffers if available.

 

Service ratios:

 

•

31 to 1

 

•

63 to 1

 

•

127 to 1

 

•

255 to 1

 

•

511 to 1

 

• 1023 to 1

 

• 2047 to 1

 

• 4095 to 1

 

• 8191 to 1

 

• 16383 to 1

 

• 32767 to 1

 

 

 

4.To manage your Fabric Port buffers, click on the Fabric Port Buffer number whose associated buffers you want to manage. The selected fabric port’s Detailed Buffer Configuration dialog box opens.

5.Use Table 13-2 to manage your port’s input and output buffer:

 

Table 13-2.Buffer Detailed Configuration Parameters

 

 

 

Parameter

 

Definition

 

 

 

Memory

 

The amount of physical memory associated with this buffer.

 

 

 

Age Timer

 

The amount of time a packet remains in the queue before being

 

 

discarded as a stale packet. You may want to increase the timer

 

 

value for ports connected to 10 MB/s ports, particularly 10

 

 

MB/s shared media, because you may want to queue packets

 

 

longer before discarding them.

 

 

 

Cajun P550/P220 Switch Operation Guide

13-3