Can GTM redirect DNS requests to external host?

Hi,

 

 

Thanks for your prompt response. I have got a few more questions.

 

 

1. In my configuration, the statistics results on LTM and GTM are inconsistent, more specifically, the number of connections reported on a LTM is different from the number of connections reported on a GTM (through its server statistics) which controls the LTM. Could someone tell me why?

 

 

2. I assume LB_FAILED means none of the virtual servers is available, e.g., reaching the connection limits. I used the following syntax

 

 

when LB_FAILED {

 

cname external.foo.com

 

}

 

 

My question is how do I check the cname returned with the dig requests? Can I do it on GTM using BIGpipe console? In addition, I am not able to ping external.foo.com from my GTM, but I am able to ping the IP address corresponding to external.foo.com. Where should I add the name resolution, on GTM or LDNS which direct traffic to the GTM?

 

 

3. I saw an earlier post similar to my scenario http://devcentral.f5.com/Default.aspx?tabid=53&view=topic&forumid=5&postid=11153. i found a similar scenario on page 7-2 of 3-DNS Administrator Guide. However, how do I configure if I want to have the round robin instead of topology LB method? The point is I don't want the CDN pool be part of the round robin, it should only be used when no other F5 pool in the wide IP is available.

 

 

Thanks,

 

-Xi