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Buffer Statistics for Egress Queues

You can also display the amount of memory that is allocated to each egress queue. The allocated amount of memory is displayed in both the number of buffers and the number of bytes. Buffers are 128-byte units of memory that store packets in the queues.

Table�209 lists the buffer statistics that you can display for egress queues. These settings are determined by the switch. You can display them but not change them.

Table�209:�Buffer Statistics for Egress Queues �
Statistic
Description
Total Queue Memory (buffers)
The total number of buffers that are allocated to all queues on the port.
Total Queue Memory (bytes)
The total number of bytes that are allocated to all queues on the port.
Age Out Interval
The maximum number of milliseconds that a queue can store a packet. If the switch does not forward the packet before this time period expires, the queue drops the packet.
Reserved Allocation (buffers)
The number of buffers that are allocated to a specific queue. These buffers are dedicated to the queue and cannot be used by another queue.
Reserved Allocation (bytes)
The number of bytes that are allocated to a specific queue. These bytes are dedicated to the queue and cannot be used by another queue.
Maximum Allocation (buffers)
The maximum number of buffers that can be allocated to a specific queue if extra buffers are available (not being used by another queue).
Maximum Allocation (bytes)
The maximum number of bytes that can be allocated to a specific queue if extra bytes are available (not being used by another queue).
Minimum Free Pool After Allocation (buffers)
The minimum number of empty buffers that the port must have available at all times.
If queues exceed their Reserved Allocation, they can consume buffers in their Maximum Allocation only until the pool of empty buffers reaches this number.

This section contains procedures for the following tasks:


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