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Performing Admin Tasks Through the CLI

This chapter describes the following administrative procedures that can be performed through the CLI.

• “Setting the IB Interface Speed” on page 39

• “Notifying Users” on page 40

• “Setting the System Clock” on page 41

• “Rebooting the System” on page 43

Setting the IB Interface Speed

InfiniBand interface port speeds can be configured to 1x or 4x.

Explicitly Configure IB Interface Speed

To explicitly set the speed for the InfiniBand interface ports as 1x or 4x:

1. Confirm that you are using the appropriate InfiniBand cable for the speed you intend to set.

For example, if you intend to set the speed as 4x, it is imperative that you confirm you are using a

4x cable. Using a 1x cable on a 4x speed InfiniBand interface will cause serious performance

issues.

2. (Optional) Disable auto-negotiate if it is currently enabled. The interface speed cannot be

configured as long as auto-negotiate is enabled.

Example

Topspin-360> enable

Topspin-360# config

Topspin-360(config) interface ib all no auto-negotiate

Topspin-360(config-if-ib-1/1-1/12)#

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