Zhone 2004 ユーザーガイド
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2 0 0 0 - A 2 - G B 2 2 - 0 0
Under normal circumstances, the port range default setting is adequate.
However, if you interact with products including multiple-player IP games or
video conferencing, you need to configure the port range setting.
However, if you interact with products including multiple-player IP games or
video conferencing, you need to configure the port range setting.
To multiplex several connections to a single destination, the IAD assigns all
packets unique port numbers. Each IP packet starts with a header that contain
the source and destination addresses, as well as two port numbers. The
addresses specify the two routers at each end, while the two port numbers
ensure the unique identification of each router pair.
packets unique port numbers. Each IP packet starts with a header that contain
the source and destination addresses, as well as two port numbers. The
addresses specify the two routers at each end, while the two port numbers
ensure the unique identification of each router pair.
When the IAD sends TCP or UDP connection from a local port to an Internet
port, it changes the sent IP address to the address of the Internet port.
Similarly, it changes the TCP or UDP connection port number to a unique
value within the NAT port range.
port, it changes the sent IP address to the address of the Internet port.
Similarly, it changes the TCP or UDP connection port number to a unique
value within the NAT port range.
You can display the NAT settings with the Display NAT Local Server Table
command.
command.
NOTICE:
Ensure that the NAT port range does not include any ports that use
applications such as HTTP, TFTP, and so on.
applications such as HTTP, TFTP, and so on.
To configure the NAT port range, follow the steps below:
1
Type “R” on the NAT Configuration menu to select the Configure NAT
Port Range. The IAD displays the low-end port range and prompts you to
enter a Low-end value.
Port Range. The IAD displays the low-end port range and prompts you to
enter a Low-end value.
2
Type the Low-end value and press Enter. The IAD displays the High-end
port range and prompts you to enter a value.
port range and prompts you to enter a value.
Enter High End of NAT Port Range (50000..65534): (50000)
3
Type the High-end value and press Enter. The IAD saves the configuration
and displays the NAT Configuration menu.
and displays the NAT Configuration menu.
4
Continue with other NAT configuration tasks, or press Escape to return to
the Main menu.
the Main menu.
Configure NAT Local Server Entry
To configure the NAT local server entry, follow the steps below:
1
Type “N” on the NAT Configuration menu to select Configure NAT Local
Server Entry. The IAD prompts you to enter a NAT Local Server.
Server Entry. The IAD prompts you to enter a NAT Local Server.
2
Type the number of the Local Server entry and press Enter. The IAD
displays the current IP address and prompts you to enter a new one.
displays the current IP address and prompts you to enter a new one.
Type the local server translated IP address and press Enter. The IAD displays
the Protocol Configuration menu. The protocol may be unknown, or it may be
set.
the Protocol Configuration menu. The protocol may be unknown, or it may be
set.