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Chapter 44 Troubleshooting
ZyWALL 110/310/1100 Series User’s Guide
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The interface’s IP address may have changed. To avoid this create an IP address object based on
the interface. This way the ZyWALL automatically updates every rule or setting that uses the object
whenever the interface’s IP address settings change. For example, if you change LAN1’s IP address,
the ZyWALL automatically updates the corresponding interface-based, LAN1 subnet address object.
I cannot set up a PPP interface.
You have to set up an ISP account before you create a PPPoE or PPTP interface.
The data rates through my cellular connection are no-where near the rates I expected.
The actual cellular data rate you obtain varies depending on the cellular device you use, the signal
strength to the service provider’s base station, and so on.
I created a cellular interface but cannot connect through it.
• Make sure you have a compatible 3G device installed or connected. See www.zyxel.com for
details.
• Make sure you have the cellular interface enabled.
• Make sure the cellular interface has the correct user name, password, and PIN code configured
with the correct casing.
• If the ZyWALL has multiple WAN interfaces, make sure their IP addresses are on different
subnets.
I cannot configure a particular VLAN interface on top of an Ethernet interface even though I
have it configured it on top of another Ethernet interface.
Each VLAN interface is created on top of only one Ethernet interface.
The ZyWALL is not applying an interface’s configured ingress bandwidth limit.
At the time of writing, the ZyWALL does not support ingress bandwidth management.
The ZyWALL is not scanning some zipped files.
The ZyWALL cannot unzip password protected ZIP files or a ZIP file within another ZIP file. There are also limits
to the number of ZIP files that the ZyWALL can concurrently unzip.