Troubleshooting DHCP and PXE Failures on Cisco Switches
What settings on a Cisco switch would cause it to not pass certain DHCP requests? A change from managing DHCP on the Windows 2008 Server DC to managing it on the Cisco router has caused me two IT...
View ArticleRe-subnetting
Currently our environment is running 3 VLAN's which I think is causing performance issues. The VLAN's were used strictly for separating growing networks. I want to resubnet the network and start with...
View ArticleDoes anybody ever use CableSys patch cable?
I've been using Belkins for our patch cabling on our data center. I am wondering if anybody has used CableSys patch cables in the past. My main concern on patch cable is those 'snagless" type whereas...
View ArticleChrome update disabled flash player
Anyone else find that the recent Chrome update made the Flash plug-in disabled by default? Any idea how to re-enable it for all users on a computer? I sent an e-mail out to my co-workers telling them...
View ArticleA 5-layer dip to better (and free) network monitoring
This is the 165th article in the Spotlight on IT series. If you'd be interested in writing an article on the subject of backup, security, storage, virtualization, mobile, networking, wireless, DNS, or...
View ArticleCabling Suggestions and Preferences
Management recently decided to move 30-40 people (at least) into an older portion of the building. Most offices had just one digital phone jack and one ethernet jack. Our two man team has already run...
View ArticleBest NetFlow/sFlow analyzer
Recently we have been having some problems with our inter-site connectivity. High latency, packet loss, and general slowness as reported by users. I have used NetFlow and sFlow data before to track...
View ArticleIs tracert different in Windows 7?
When trace routing from my Win 7 laptop to the GW at the other end of my VPN, there is only one hop. Directly to that VPN GW. When trace routing from Windows 2003 servers they report 2 hops, the first...
View ArticleQuestions about some netstat output
I was troubleshooting an issue on a terminal server and noticed quite a few users had cmd.exe running. I immediately think "Oh crap, something malicous is going on" (toned down to keep rated PG)....
View ArticleProcessing Credit Cards Failures
We are seeing weird issues with our credit card processing. Within our software we can attempt an authorization to paypal payflow. On the first try it fails on the second it goes through. The server...
View Articleweird issues where some Javascript is being blocked
I am having some weird issues where some Javascript is being blocked in all browsers I have tried. IE 8, and latest Chrome and Firefox (Javascript is allowed/enabled on all). The issue is not specific...
View ArticleAccess Point Question.
I'm so used to configuring Cisco WAP's for our Cisco switches and vlans etc etc, I'm not positive on what I am trying to do but here's what I am trying to do. Well haven't tried yet but will be doing...
View ArticleHow do you create VLAN on a switch Cisco/Netgear
I'm trying to setup a VLAN on a switch so i can use it to patch both my internet and camera security? Need your assistance on how to create a VLAN on a switch for internet connection.
View Article2 windows7 PCs cannot see half the network after switching to backup copper link
Our network spans two sides of a busy road. The switches are connected with Fibre links We had to take down the fibre for maintenance so we disabled those ports and enabled the copper backup link...
View ArticleInternet Sharing
Hi Guys, I need immediate help. I have a laptop which is connected to internet via USB modem. I have an IPAD which I need to connect to internet shared from the laptop. There is a WIFI Router placed...
View ArticleIP Addressing / Subnets / Routing
Hi All, I'm hoping for someone to have a moment of brilliance and help me to work out an odd routing problem we are having. Background: We have 2 sites linked via a dedicated fibre link, routers at...
View Articleiphones stopped connecting to exchange 2003 on 2/28 androids are fine
Does anybody have a line in on why all iphones would stop connecting to an exchange 2003 server ? relevant facts stopped working even before the dreaded new update was installed all 5 stopped working...
View Articlehow can is messure the network bandwith usage
Hi does anyone know how to messure the network bandwith usage by PC thanks
View ArticleI have a friend needing help with a dual ISP setup
My friend is needing help setting up has dual ISP and he wants 2 network and have them talk like in pic posted. He also has no money to do this but his a some hardware on hand(see list). He would also...
View ArticleZyWALL USG50 Dual Wan failover
I need an affordable dual wan router to configure for T1/Cable failover in a small office network. I was thinking of using Untangle, but I have 11 users and don't want to pay the 11 to 50 user license...
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