Enhancements

Releases M.08.90 and M.08.91 Enhancements

Note

Changing the QoS Pass-Through Mode can be done without rebooting the switch. However, the switch ports are toggled down and back up, allowing the QoS queues to be reconfigured. This may affect routing and spanning tree operation. ProCurve Networking recommends that QoS queues be reconfigured during periods of non-peak traffic.

Configuring QoS Pass-Through Mode

Syntax: qos-passthrough-mode [ balanced one-queue optimized typical ]

Specifies the QoS queue mode to be used by the switch. The number of queues and the size of each queue is determined by the mode selected. If no mode is specified the optimized mode is used. QoS Pass-Through is disabled using the no qos-pass-throughcommand.

balanced: Configures four QoS queues of the same size. This configuration is the same as was used by software versions prior to M.08.78.

one-queue:Configures one QoS queue. By consolidating packet buffer memory, linerate flows with no loss of data may be achieved.

Note: This mode has a small queue used exclusively by Priority 7 management and control packets.

optimized: Configures two QoS queues: a small queue for Priority 6 and 7 traffic and a large queue for all other traffic.

typical: Configures four QoS queues: a large queue for Priority 0 and 3 traffic, and three other queues for the remaining traffic. This is the default configuration on the switch and is used when QoS Pass-Through is disabled.

Syntax: [no] qos-passthrough-mode

Specifies the optimized QoS queue mode for the switch.

The no qos-pass-throughcommand returns the QoS queue mode to typical, the default setting.

Configuring QoS Pass-Through Mode Through the CLI. The following example changes the

QoS Pass-Through Mode to balanced. A show command verifies the new mode.

ProCurve(config)# qos-passthrough-mode balanced

This requires a temporary shut-down of logical ports. Continue (y/n) y ProCurve(config)# show qos-passthrough-mode

Qos passthrough mode : balanced

ProCurve(config)#

Reconfiguring the QoS queues toggles the switch ports, which may affect routing and spanning tree operation. Choose n to cancel this operation.

Figure 1. Example Showing QoS Pass-Through Mode Set Using the CLI

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