Allied Telesis AlliedWare NetScreen Routers - Manual (Page 9)

Use Dynamic DNS To Allow You To Host Servers Behind A Dynamically-Assigned Public IP Address 9
Check dynamic DNS configuration
show ddns After you have entered the DDNS configuration, you can check it by using the command:
show ddns
The following figure shows an example output from the command show ddns once the
public IP address has been assigned, but before a dynamic DNS update has occurred.
In the above output of show ddns, the fields show the settings you have configured, except
the system name field and probably the Server field—you can configure the server setting
but do not need to. The following table has more information about these two fields.
When your ISP assigns a public IP address to your WAN interface, dynamic DNS waits for 30
seconds, then initiates a dynamic DNS update. The wait allows time for the PPP interface to
become fully open and means that the ISP’s DNS server is reachable. The dynamic DNS client
can then resolve the IP address for members.dyndns.org and send the dynamic DNS update.
DDNS Config Information:
Client State ....................... ENABLED
Debug .............................. ENABLED
Server ............................. members.dyndns.org
Port ............................... 80
User ............................... test
Password ........................... ****
system name ........................ dyndns
hosts ............................ test.dyndns.org
Wildcard ........................... off
Offline ............................ no
Primary WAN Interface .............. ppp0
Secondary WAN Interface ............ ppp1
DDNS Operation Information:
Server IP .......................... 0.0.0.0
IP in DynDns ....................... 0.0.0.0
Current IP ......................... 222.152.186.174
Field Meaning Configurable?
Server The server that the dynamic DNS client
connects to at DynDNS.com, which is
members.dyndns.org. Yes, by using the command set ddns, but
you do not need to configure it because
the only valid value is the default value of
members.dyndns.org.
System name The DynDNS.com system that update
messages use: one of dyndns, statdns, or
custom, depending on the type of
hostname you chose. No. The router automatically sets the
system name to an appropriate value for
your hostname type.