Have you connected a machine directly to the cable modem and tested? Same issue during the day?
Chris Bodnar, MCSE Technical Support III Distributed Systems Service Delivery - Intel Services Guardian Life Insurance Company of America Email: christopher_bod...@glic.com Phone: 610-807-6459 Fax: 610-807-6003 From: <gswe...@acts360.com> To: "NT System Admin Issues" <ntsysadmin@lyris.sunbelt-software.com> Date: 03/15/2011 05:09 PM Subject: Seriously Wierd Issue School of about 110 workstations. They have a Watchguard firewall doing no proxy’s, connection limiting etc. We had an IPRISM in the picture, pulled it out for testing Verified all duplex speed settings. One main HP 2848 switch at the core, all other switches connected via Fiber are unmanaged. Had Brighthouse rerun the cable and replace the cable modem. I am able to connect to their test site and get 50meg down / 5 meg up consistently. Here is where it gets strange. During the day, it takes 10 secs for every website to pull up, DNS resolves immediately… and during this wait you can ping anything internally/externally without any issue. Once the page pulls up you are fine, any speedtest site for example, will run and zing…it full speed. Internally this is not an issue, any website, program , application runs fine. No speed issues. After 4 or 5 pm…this goes away completely. No issues resolving sites, pages display instantly or within a sec or so.. Looking at the firewall during this time, there is virtually no traffic on the pipe, low number of connections, under 100 usually passing through the firewall. But again, once I get to a speedtest I can download full speed.. Switch is sitting at 7 or 8 % CPU utilization. Any idea where to look, what to look for, or what could cause such a HUGE drop in performance for web, ftp, etc.. It has to be something on the network or a workstation, but I cannot figure out for the life of me what. I can spin up wireshark and dump the monitoring port to it, but I wouldn’t know what to look for causing this. Greg Sweers CEO ACTS360.com P.O. Box 1193 Brandon, FL 33509 813-657-0849 Office 813-758-6850 Cell 813-341-1270 Fax ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin ----------------------------------------- This message, and any attachments to it, may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are notified that any use, dissemination, distribution, copying, or communication of this message is strictly prohibited. If you have received this message in error, please notify the sender immediately by return e-mail and delete the message and any attachments. Thank you. ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
