About DNS forward

[SH GM]

I have a internal DNS server which is running on HPUX 10.20. The server is configured as "root" server. Now, i am going to config the server to forward dns request to other dns server which are located in other sub-network. Could you tell me how to config the forwarder and what i need to do in '/etc/named.boot' file?

Thanks

[Srinivasan Sankar]

An entry like this will help

thanks

forwarders 139.130.4.4 203.50.1.75
slave

[Vincenzo Restuccia]

If the named daemon will not start



If the named daemon is not running, follow the steps below:

Step 1. On the DNS server for the NCPM subdomain, make sure you have a file called /etc/named.boot.
Step 2. If your host is on an isolated subnet, make sure you are using an /etc/named.data/db.cache file that contains the root name servers for your domain. If your subnet is located behind a firewall, you cannot reach the root name servers for the Internet, and named will not start up correctly unless it can contact a root name server.
Step 3. Issue the ping command to make sure the name server for the NCPM domain can contact the root name servers. If ping fails, there may be a problem with your network or your network connections. See Installing and Administering LAN/9000 Software for troubleshooting information.
Step 4. Read the last few entries in the syslog file (usually /var/adm/syslog/syslog.log) to see if named logged any errors. Startup problems and syntax errors in the DNS database files are usually logged by syslog.
Step 5. Issue the following command to restart named with debugging on:

/usr/sbin/sig_named debug 2

Examine the file /var/tmp/named.run to see what is happening when named starts up. For an explanation of DNS debugging output, see DNS and BIND , by Paul Albitz and Cricket Liu, published by O'Reilly and Associates.

Be sure to turn named debugging off when you have found the problem. Otherwise, the /var/tmp/named.run file will grow large, and named performance will suffer. To turn named debugging off, issue the following command:

/usr/sbin/sig_named debug 0