The ranting of an IT Professional:

Networking


June 30, 2011  7:49 PM

Cisco WLC with PEAP authentication on a MS Radius server



Posted by: Jason Tramer
802.1x, ceritifcate, Cisco, Microsoft, network policy server, peap, radius, wlan, wlc

Just set up 802.1x authentication on a Cisco Wireless LAN controller WLAN for the first time. My objective is to get Active Directory authentication working for my WLAN, accessible by both corporate laptops as well as blackberry and iphones. I set up my WLAN with 802.1x auth pointing to a radius...

April 6, 2011  6:45 PM

“Error 692: Hardware Failure in the Modem” Error Message When You Dial an RAS Server



Posted by: Jason Tramer
error 692, hardware failure, hotfix, L2TP, PPTP, RAS, reboot, VPN, Windows 7

Part of troubleshooting RAS (PPTP and L2TP) VPN connections is constantly tweaking your settings (both client and server) and reconnecting. This becomes a complete pain when Windows 7 decides its sick of trying and just starts generating a error 692, forcing you to reboot before you can try...


March 29, 2011  4:10 PM

Cisco acquires NewScale



Posted by: Jason Tramer
Cisco, Cloud, NewScale

Take a look: http://www.theregister.co.uk/2011/03/29/cisco_buys_newscale/ Cloud computing is really becoming a overused term. Everyone is signing on to it, but most people don't even really understand it. This will either be the future of IT or a complete fad. I give it 50/50 odds.


March 8, 2011  6:38 PM

The dangers of Mirror ports and Etherchannel



Posted by: Jason Tramer
Cisco, Etherchannel, loops, Mirror ports, Spanning Tree, switches

I was brought in to troubleshoot an interesting issue with some Cisco switches yesterday. I had a stack of 3750's(Core) and a stack of 2960S's. Etherchannel was set up on both sides to connect the two stack's together. Each time they were connected they would work for about 20-30 minutes and then...


March 8, 2011  6:30 PM

Cisco ASA: Accessing VPN networks using L2TP VPN



Posted by: Jason Tramer
ASA, inside, Ipsec, L2TP, tunnel, VPN

Troubleshooting this issue for a bit, user connects to a L2TP VPN presented by the ASA. They can connect to the inside network but not to a network connected to that ASA via IPSEC tunnel. This is actually a simple fix and enter the command:


March 7, 2011  4:17 PM

ICMP redirect cache is empty



Posted by: Jason Tramer
1921 router, Cisco, ICMP redirect cache is empty, IP routing, Show IP Route

I was deploying a new Cisco 1921 router and couldn't get an internet connection going.  I did a Show IP route and saw no routes (not even my static) and got the message "ICMP redirect cache is empty". After double checking that IP routing was enabled (it was), I rebooted but had the same issue. I...


February 28, 2011  7:16 PM

Cisco Partner exams



Posted by: Jason Tramer
Cisco, exams, partner, rant

Working in the consulting field generally means that you partner with big vendors i.e. Cisco, Microsoft, Citrix etc. Generally these companies require you have certain certifications to maintain that partner status. Most of these companies just use their normal everyday certifications i.e. have X...


February 28, 2011  7:10 PM

CCDA



Posted by: Jason Tramer
CCDA, Routing and Switching, Security, Voice, Wireless

Passed my CCDA exam today! Overall having done  professional level Cisco cert's, going back to associate level wasn't that hard at all. I have a very even mix of questions between Routing and Switching, Voice, Security, and Wireless, so know all of them well but it doesn't go anywhere near the...


February 25, 2011  10:25 PM

Using PAP in OSX L2TP VPN connections



Posted by: Jason Tramer
L2TP, Mac, MSCHAP, OSX, PAP, VPN

I know some people go absolutely head over heels in love with Mac's but personally I don't see the appeal. They are a complete pain IMO to configure the simplest options. For example, when you are setting up a L2TP VPN connection do you think it might be helpful to set the authentication...


February 2, 2011  8:56 PM

Upgrade the firmware on a Cisco lightweight access point



Posted by: Jason Tramer
Access Point, autonomous, Cisco, firmware, Lightweight, tftp, Upgrade, Wireless

Need to roll out a new firmware revision to all your access points connected to your controller? Maybe you need to convert some into autonomous mode? Easy and simple way to accomplish this. Load up your IOS file onto a TFTP server and then connect to the CLI of your controller. Enter this...


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