About Edward Yardley

Edward is a Network Engineer with 10 years experience in the IT industry but is a new comer to pure networking. He has worked in web development, as a systems administrator, and has recently dived into the networking world. Find him blogging @ PacketPushers.net and on Twitter.

CCNP Studies: Configuring IP Source Guard

27 August 2012 by 3 Comments
IP Source Bindings

In my last post, we built a nice foundation in switch security with DHCP Snooping, which IP Source Guard (IPSG) is reliant … [Read more...]

Filed Under: Blogs, Certification, Security Tagged With: ,

CCNP Studies: Configuring DHCP Snooping

3 August 2012 by 5 Comments
snooptopol

I've been enthralled with the security features for Catalyst switches. I've had to plug away at the theory and lab work … [Read more...]

Filed Under: Blogs, Security, Switching Tagged With: , , , ,

Unexpected OSPFv3 Virtual-Link Behavior

20 July 2012 by 2 Comments
virtuallinktopol

I came across an interesting question in the Cisco Learning Network forums a couple of weeks ago about OSPFv3 virtual-link … [Read more...]

Filed Under: Blogs, IPv6, Routing Tagged With: , , ,

CCNP Studies: Configuring HSRP – Part Two

12 July 2012 by 5 Comments
HSRP L2 topology

Welcome back! Today, we’ll continue with HSRP, working with a slightly more complex topology. If you haven’t read part … [Read more...]

Filed Under: Blogs, Certification, Routing, Switching

CCNP Studies: Configuring HSRP – Part One

6 July 2012 by 11 Comments
HSRP topology

Greetings! I’m a network engineer in the Washington D.C. area, and I’m currently working my way through the CCNP. I want … [Read more...]

Filed Under: Blogs, Certification, Routing Tagged With: , ,