Dave Hucaby has a new blog. Author of some Cisco Press Books such as: Cisco LAN Switching Configuration Handbook (2nd Edition) CCNP SWITCH 642-813 Official Certification Guide (Exam Certification Guide) Cisco ASA, PIX, and FWSM Firewall Handbook (2nd Edition) Just to name a few. I will be pestering him. I will be asking him questions. I will be testing ...

Here's  a quick update on my attempts to make Cisco's L3 3550 switch a VPN endpoint. Here is the original post: http://www.brandontek.com/?p=275 I've tried another method to get "some" kind of tunneling to work between the 3550 and 1811 router. I thought maybe a VTI could possibly work. To test this theory out. I first created a ...

So you want to upgrade your Cisco 3620 but you don't have an available ethernet port? You can do it the slow way via console connection or you can get a little clever, depending on what modules you have. For me, I needed to upgrade my router to the last and final supported version of 12.3(26) ...

If you have the EMI version of Cisco's 3550 layer 3 switch, is it technically possible to use the 3550 as a VPN edge device? This post isn't going to answer that question today, but it will show you my attempts at it, and perhaps, like the old saying goes, if you chip at a ...

Cisco's portfast feature, which later became an implemented feature in RSTP (802.1w) is an interesting feature. It's purpose is to bring an interfaces state to a "Forward" state as quickly as possible. This, if you are using multiple switches and spanning-tree is being utilized. But what if you're not? How quickly does the interface go ...

While playing with my simulated serial WAN link. I thought I could simulate the link going down by turning off keepalives on one of the serial interfaces. After waiting 5, 10 minutes and still being able to ping across, I decided to turn off the other keepalive coming from the other switch! Low and behold, the ...