H3C Technologies H3C WX6000 Series Access Controllers - Manual (Page 19)

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7
Troubleshooting
This chapter describes how to troubleshoot H3C WX series access controllers problems. If you cannot
solve a system problem, contact the H3C technical support staff.
Technical support:
[email protected]
http://www.h3c.com
The AC Cannot Connect to the Network
Symptom
After you connect a network cable to the AC, the AC cannot connect to the network.
Solution
Check that:
1) The AC starts up completely and you can see the user prompt.
2) The port link is not shut down.
3) The RJ-45 connector is properly connected to the network port of the AC.
4) The corresponding port on the peer device works normally.
5) The network cable works well. Otherwise, replace it with another one.
6) The length of the network cable does not exceed 100 m (328.08 ft.).
7) If the problem still exists, contact the service engineer.
The Optical Interface Cannot Connect to the Network
Symptom
After you insert an SFP optical transceiver, it cannot connect to the network.
Solution
Check that:
1) The AC starts up completely and you can see the user prompt.
2) The RJ-45 network port of the Combo port is down or not connected.
3) The optical transceiver is supported by your AC.
4) The optical transceivers used on the local and peer ends match in modes (single mode or
multi-mode) and wavelength.
5) The corresponding port on the peer device works normally.
6) The optical fiber is connected correctly. Connect the two ends of the cable to the TX and RX ends
on the two optical transceivers, respectively.
7) The optical fiber is correct and works well. Otherwise, replace it with another one.