2003 DNS server - sometimes it works, sometimes it don't!


hi experts!

problem: machines using our local dns server dns requests timeout, after few retries work.

setup:
- netgear router using our isp's dns. (192.168.0.1)
- single 2003 server dns , ad. (192.168.0.3)
- mix of mac, xp , vista clients. (192.168.0.100-200)

all clients have single dns entry pointing our local dns server.
the local dns server points dns resolution.
the dns service uses routers ip forwarding requests.
the router uses our isp's dns servers external resolution.

using nslookup or web browser, requests timeout, after 20-30 seconds , bunch or retries, page load, nslookup work, etc. same on client or local dns server.

this has been in place , working 2 years now, , started 2 months ago.

if, on client machine, switch dns use router directly , bypass local dns server, fast , no timeout issues.

please let me know other details can provide.

thanks,
goosey

i think found solution after more input on network confirm...

the problem our router, seems superstar in our company moving cables around , reconfigured things.

we have semi-prosumer netgear router, , 3 floors 24port 1gbps switch on each. before router plugged switch closest it, uplink port , each floor daisy chained/uplinked top bottom.

well, 3 switches plugged router, 1st problem seperating each floor onto own little gb network , believe jamming many collisions through causing timeout on alot of requests.

i'm not sure #2, moving cableing way seems have helped greatly.

thanks suggestions bill!
-goosey


Windows Server  >  Network Infrastructure Servers



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