Line Card Management 61

Normal operation is lack of loopbacks and half duplex.

■Internal Loopback Mode

■External Loopback Mode

■Full Duplex Mode

The full duplex mode is displayed if a previous operation changed the mode to full duplex.

Refer to Set Ethernet Half/Full Duplex Mode, on page 71, for changing the duplex mode.

Setting Internal Loopback Mode

To set internal loopback mode, type 2 and press <Enter>. The message appears:

This action will change the working mode of Ethernet

Do you want to proceed (Y/[N])? :

To confirm type y; to discard, type n; and and press <Enter>. When you proceed, the message appears:

Action has been done.

When you discard the operation, the message appears:

The action has been canceled

Setting External Loopback Mode

To set external loopback mode, type 3 and press <Enter>. The message appears:

This action will change the working mode of Ethernet

Do you want to proceed (Y/[N])? :

To confirm type y; to discard, type n; and and press <Enter>.

When you proceed, the message appears:

Action has been done.

When you discard the operation, the message appears:

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3Com DSA-3CV1100-02 service manual Setting Internal Loopback Mode, When you discard the operation, the message appears
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