ZyXEL Communications MSC1000G Series, Руководство пользователя

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Chapter 38 Troubleshooting
Management Switch Card User’s Guide
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Make sure you use terminal emulation software with the correct settings. The default settings are
VT100 terminal emulation, 9600 bps, No parity, 8 data bits, 1 stop bit, and no flow control;
although you can use the commands to configure the console port speed.
38.3 Configuration
Configuration changes were not saved after I restarted the system.
Use Config Save when you are done with a configuration session.
38.4 Data Transmission
The Gigabit Ethernet interface’s LED is on, but data cannot be transmitted.
1
Ping the MSC from a computer behind the connected uplink or downlink Ethernet device.
2
If you cannot ping, check the Ethernet cable and connections between the uplink or subtending port
and the Ethernet switch or router.
3
Make sure the port has the appropriate uplink or subtending mode setting.
4
Make sure the system’s IP settings are properly configured. The MSC and the peer Ethernet devices
must be in the same subnet.
5
Check the VLAN configuration. The Gigabit Ethernet port must be a member of the same VLAN as
the traffic you want to send through it.
I resolved a network loop problem on a switch connected to an IES port but the IES port still
does not send or receive data.
The port may have the loop guard feature enabled. Loop guard shuts down a port if it detects a
network loop on it. After resolving the loop problem on your network use the related port setup or
switch port setup Web Configurator screen or the commands to re-activate the disabled port.
The ports in an n-wire group cannot send or receive data.