CCIE Security lab: Switching
It is time to set up the core network. Nothing new here really, a bit of HSRP and a few niceties (like disabling timeout on the console). The switches …
Category: Switching
IOU – Image is everything
Finding the right IOU images can be a tricky thing to do, depending on what you are looking for. Things may look correct, but when you dig deeper down …
HSRP, Cisco Emulation software and ASICs
I wrote sometime back about how to implement HSRP using Cisco IOU and in GNS3, but it has been pointed out that even though it might look like it …
Fun with QinQ tunnels – Part 4: Never trunk a tunnel VLAN
We are back to playing with QinQ tunnels. This time solving a Layer 2 loop issue. If you recall from part 1 we have had to do a bit …
Cisco ASA failover, redundant interfaces, Catalyst HSRP and power
Most networks have redundancy (or at least should do). This can be in the form of additional cables cross-connecting devices, dual power supplies going to different feeds and HSRP …