Lucent Technologies Cajun P220, Operation Manual

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Tuning Your Switch Performance (Layer 2 & Layer 3)
Cajun P550/P220 Switch Operation Guide 13 - 3
Table 13-1. Buffer Management Parameters
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:
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
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.