ZyXEL Communications ZyWall USG 50-H Series, Руководство пользователя

Страница: 175 / 704

Chapter 8 Interface
ZyWALL USG 50-H User’s Guide
175
PIN Code This field displays with a GSM or HSDPA 3G card. A PIN (Personal Identification
Number) code is a key to a 3G card. Without the PIN code, you cannot use the 3G
card.
Enter the 4-digit PIN code (0000 for example) provided by your ISP. If you enter
the PIN code incorrectly, the 3G card may be blocked by your ISP and you cannot
use the account to access the Internet.
If your ISP disabled PIN code authentication, enter an arbitrary number.
Interface
Parameters Click Advanced to display more settings. Click Basic to display fewer settings.
Egress
Bandwidth Enter the maximum amount of traffic, in kilobits per second, the ZyWALL can send
through the interface to the network. Allowed values are 0 - 1048576. This setting
is used in WAN load balancing and bandwidth management.
Ingress
Bandwidth This is reserved for future use.
Enter the maximum amount of traffic, in kilobits per second, the ZyWALL can
receive from the network through the interface. Allowed values are 0 - 1048576.
MTU 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.
Connectivity
Check 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.
Enable
Connectivity
Check Select this to turn on the connection check.
Check Method 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.
Check Period Enter the number of seconds between connection check attempts.
Check Timeout Enter the number of seconds to wait for a response before the attempt is a failure.
Check Fail
Tolerance Enter the number of consecutive failures before the ZyWALL stops routing
through the gateway.
Check Default
Gateway Select this to use the default gateway for the connectivity check.
Check this
address 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.
Check Port This field only displays when you set the Check Method to tcp . Specify the port
number to use for a TCP connectivity check.
Dial Check You can have the ZyWALL regularly dial up an idle cellular interface’s connection
to determine if the cellular data service is available. The ZyWALL tears the
connection back down after dialing it up. You specify how often the interface dials
up the connection, how long to wait for a response before the attempt is a failure.
The ZyWALL does not perform dial checks if the
Nailed Up option is enabled.
Enable Dial
Check Select this to turn on the dial check.
Check Period Enter the number of seconds between dial up attempts.
Table 54 Interface > Cellular > Add (continued)
LABEL DESCRIPTION