Changing DNS nameserver Timeout

[Scott Torgerson]

Does anybody know a way to make DNS go to the next "nameserver" entry in the /etc/resolv.conf file faster, if the the first one is down or not responding? If the first nameserver is not responding, it takes to long to go to the next entry.

[Patrick Wallek · Accepted solution]

Scott,

Here are a couple of links to documents I found in the TKB:

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=f8c0b9e006025ada6d/screen=ckiDisplayDocument?docId=200000053127912

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=f8c0b9e006025ada6d/screen=ckiDisplayDocument?docId=200000028139863

[Steven Sim Kok Leong]

Hi,

Add the following line in your /etc/resolv.conf:

retrans [time in 1000th of a second]

If you want the timeout to be in 1 second, then the retransmit should be:

retrans 1000

Since retry is only once (the default setting I am recall correctly), the retransmit is analogous to a timeout.

Hope this helps. Regards.

Steven Sim Kok Leong
Brainbench MVP for Unix Admin
http://www.brainbench.com