Ruby Tech GS-2124C Manuel d'utilisateur télécharger pdf (Page 137)

GS-2124C User Manual

Publication date: June, 2005

Revision A1

127

Function name:

Loopback Test

Function description:

In the Loopback Test function, there are two different loopback tests. One is

Internal Loopback Test and the other is External Loopback Test. The former

test function will not send the test signal outside the switch box. The test signal

only wraps around in the switch box. As to the latter test function, it will send

the test signal to its link partner. If you do not have them connected to active

network devices, i.e. the ports are link down, the switch will report the port

numbers failed. If they all are ok, it just shows OK.

Note: Whatever you choose Internal Loopback Test or External Loopback Test,

these two functions will interfere with the normal system working, and all

packets in sending and receiving also will stop temporarily.

Fig. 3-66

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Ruby Tech GS-2124C Manuel d'utilisateur Page 137