ZyXEL Communications ZyWall USG 2000 User Manual page 198

Chapter 10 Interfaces
Table 54 Interface > Cellular > Add (continued)
LABEL
MTU
Connectivity
Check
Enable
Connectivity
Check
Check Method
Check Period
Check Timeout Enter the number of seconds to wait for a response before the
Check Fail
Tolerance
Check Default
Gateway
Check this
address
Check Port
Related Setting
Configure WAN
TRUNK
Configure
Policy Route
More Settings/
Less Settings
IP Address
Assignment
Get
Automatically
Use Fixed IP
Address
IP Address
198
DESCRIPTION
Maximum Transmission Unit. Type the maximum size of each data
packet, in bytes, that can move through this interface. If a larger
packet arrives, the ZyWALL divides it into smaller fragments. Allowed
values are 576 - 1492. Usually, this value is 1492.
The interface can regularly check the connection to the gateway you
specified to make sure it is still available. You specify how often the
interface checks the connection, how long to wait for a response
before the attempt is a failure, and how many consecutive failures are
required before the ZyWALL stops routing to the gateway. The
ZyWALL resumes routing to the gateway the first time the gateway
passes the connectivity check.
Select this to turn on the connection check.
Select the method that the gateway allows.
Select icmp to have the ZyWALL regularly ping the gateway you
specify to make sure it is still available.
Select tcp to have the ZyWALL regularly perform a TCP handshake
with the gateway you specify to make sure it is still available.
Enter the number of seconds between connection check attempts.
attempt is a failure.
Enter the number of consecutive failures before the ZyWALL stops
routing through the gateway.
Select this to use the default gateway for the connectivity check.
Select this to specify a domain name or IP address for the
connectivity check. Enter that domain name or IP address in the field
next to it.
This field only displays when you set the Check Method to tcp.
Specify the port number to use for a TCP connectivity check.
Click WAN TRUNK to go to a screen where you can configure the
interface as part of a WAN trunk for load balancing.
Click Policy Route to go to the screen where you can configure a
policy route to associate traffic with this interface.
Click this button to display a greater or lesser number of configuration
fields.
Select this option If your ISP did not assign you a fixed IP address.
This is the default selection.
Select this option If the ISP assigned a fixed IP address.
Enter the cellular interface's WAN IP address in this field if you
selected Use Fixed IP Address.
ZyWALL USG 2000 User's Guide