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P-663HN-51 Support Notes
www.zyxel.com.tw) for your server (e.g., Web server) from a DDNS server.
The outside users can always access the web server using the
www.zyxel.com.tw regardless of the WAN IP of the P-663HN-51.
When the ISP assigns the P-663HN-51 a new IP, the P-663HN-51 updates
this IP to DDNS server so that the server can update its IP-to-DNS entry. Once
the IP-to-DNS table in the DDNS server is updated, the DNS name for your
web server (i.e., www.zyxel.com.tw) is still usable.
10. When do I need DDNS service?
When you want your internal server to be accessed by using DNS name rather
than using the dynamic IP address we can use the DDNS service. The DDNS
server allows to alias a dynamic IP address to a static hostname. Whenever
the ISP assigns you a new IP, the P-663HN-51 sends this IP to the DDNS
server for its updates.
11. What is DDNS wildcard? Does the P-663HN-51 support DDNS
wildcard?
Some DDNS servers support the wildcard feature which allows the hostname,
*.yourhost.dyndns.org, to be aliased to the same IP address as
yourhost.dyndns.org. This feature is useful when there are multiple servers
inside and you want users to be able to use things such as
www.yourhost.dyndns.org and still reach your hostname.
Yes, the P-663HN-51 supports DDNS wildcard that http://www.dyndns.org/
supports. When using wildcard, you simply enter yourhost.dyndns.org in
Advanced Setup > DNS > Dynamic DNS.
12. What is Traffic Shaping?
Traffic Shaping allocates the bandwidth to WAN dynamically and aims at
boosting the efficiency of the bandwidth. If there are serveral VCs in the
P-663HN-51 but only one VC activated at one time, the P-663HN-51 allocates
all the Bandwidth to the VC and the VC gets full bandwidth. If another VCs are
activated later, the bandwidth is yield to other VCs after ward.
Note: Traffic shaping controls outgoing (upstream) traffic, not incoming
(downstream).
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All contents copyright © 2009 ZyXEL Communications Corporation.
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