?
Solved

DNS seems to drop from msm720 controller

Posted on 2016-09-15
2
Medium Priority
?
58 Views
Last Modified: 2016-10-12
Hello

I'm having a strange issue with my HP MSM720 wireless controller. my users will be working over the wireless and suddenly will lose DNS or the internet will become very slow. this is driving me crazy. I've upgraded the firmware on controller and APs.

please help
0
Comment
Question by:Technical Information
  • 2
2 Comments
 
LVL 30

Accepted Solution

by:
Rich Weissler earned 1000 total points (awarded by participants)
ID: 41812472
To clarify the problem:
"my users [...] suddenly will lose DNS": The user's client machines lose their local setting for DNS, or DNS service on the msm720 stops responding to wireless connections.  (I assume the clients are using the msm720 for DHCP and DNS.  Assuming you do use DNS from the box, do you have DNS cache enabled in advanced features?)  (From a client experiencing problems, if you perform a nslookup against the DNS server?  Using nslookup, change 'server 8.8.8.8' and see if you can look something up against google's DNS server...)
I believe there are a couple wired connections as well... do you know if the problem also occurs to systems connected on the wired port?  
Does anything appear in the logs on the msm720?
Any errors?  (Either on the boxes or on the client machines... can check 'netstat -e' at a minimum.)
0
 
LVL 30

Expert Comment

by:Rich Weissler
ID: 41839744
The most I can offer is an incomplete solution (a set of questions) which may help troubleshoot, or at least guide you in the direction of a more complete solution.
0

Featured Post

 The Evil-ution of Network Security Threats

What are the hacks that forever changed the security industry? To answer that question, we created an exciting new eBook that takes you on a trip through hacking history. It explores the top hacks from the 80s to 2010s, why they mattered, and how the security industry responded.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

As companies replace their old PBX phone systems with Unified IP Communications, many are finding out that legacy applications such as fax do not work well with VoIP. Fortunately, Cloud Faxing provides a cost-effective alternative that works over an…
Join Greg Farro and Ethan Banks from Packet Pushers (http://packetpushers.net/podcast/podcasts/pq-show-93-smart-network-monitoring-paessler-sponsored/) and Greg Ross from Paessler (https://www.paessler.com/prtg) for a discussion about smart network …
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…
Suggested Courses
Course of the Month13 days, 8 hours left to enroll

749 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question