ZyXEL Communications IES4005M, Руководство пользователя

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Chapter 28 Hardware Troubleshooting
IES4005M User’s Guide
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28.3 Data Transmission
The Gigabit Ethernet interface’s LED is on, but data cannot be transmitted.
1
Ping the IES 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 commands to
re-activate the disabled port.
The DSL ports’ transmission rates are lower than the DSL profile’s configured maximum rate.
You configure the maximum rate of an individual DSL port by modifying its profile (see the
corresponding DSL profile setup screen) or assigning the port to a different profile (see the
corresponding port setup screen). However, the actual rate varies depending on factors such as
transmission range and interference. A DSL port’s connection speed is also limited by what the line
card can support.
28.4 Management Lockout
You could lock yourself (and all others) out from the IES by:
1
Misconfiguring the text configuration file.
2
Forgetting the password.
3
Misconfiguring the management IP address.