Corrections are always welcome.
Category: cisco
I got a call from our Systems and Security guys today to talk about a Wireshark capture they had done from a user VLAN. They had noticed two frames that were destined for some seemingly random host in the same network as they were in, but the source and destination IP addresses reported by Wireshark made no sense. The frames were from a web server to an IP address on our wireless network. The web server is on the other side of the firewall, and the wireless network is on the other side of the controller; there was no reason at all that a packet with that source and destination would show up here.
My prediction about covering network types was wrong. I’m going to puke out some information about neighbor states for now. As is always the case, corrections are welcome.
Yes, it is inevitable that I cover these. I’m sure network types will be next.
I have had my nose deep in several books in preparation for my CCIE R&S written exam, so I haven’t been blogging much at all. Now that I’ve made it to the more familiar topics, I’m hoping to get some notes posted. I’ll start with OSPF message types.
I’m sure you’ve all heard of Cisco IOU by now, and I’m finally catching up with the other bloggers of the world by mentioning it. It’s an executable version of an IOS image that runs on a Unix (or Unix-like) platform and it’s the backend behind Cisco’s Learning Labs.
For the first time ever, I’m headed to Cisco Live – the big Cisco users conference in Las Vegas! I usually don’t go to these things since I wind up just hanging out by myself, but I’m meeting all sorts of people there – from…
My ISP is not ready for IPv6. They’ve ignored my emails asking about their deployment strategy, so I gave up and looked at turning up an IPv6 tunnel with a broker.
It’s pretty widely known that I hate Cisco 3750 switches. We’ve had so many hardware and software failures with them that I’ve got a seriously bad taste in my mouth. Since I’m leaving for a new company, I thought I’d publish some statistics while I…
Greg Ferro has brought back the petition for Cisco to provide an emulator to the community for learning. Since our current and only family of emulators is well on Garcinia Mangostana its way to oblivion, I ask that we all take the time and sign…