Tag: routing

CCIE R&S Written – Epic Fail (Again)

Yes, I failed. I think it’s pretty typical when you’re at Cisco Live, stay out drinking and smoking cigars until 1am, then sit the exam at 8am. Considering the situation I put myself in, I wasn’t very optimistic about the exam. I figured maybe a 40% chance I would pass since I didn’t really even study. Are you sensing a theme of ill-preparedness and self-sabotage? Yeah, me, too.

Junos Basics – Routing Instances

Here’s one that I use every day at work. We have multiple customers coming into the same router, and, as luck would have it, they all use 192.168.1.0/24 (OK…not really but it might happen). That means we have to separate them into their own routing instance, or virtual router, so pass traffic to their firewall. Think VRF lite on a Cisco router. Let’s conflagrate.

CCIE R&S Written – Epic WIN!

The wife and I had a romantic day driving several hours to a small town to take Cisco exams. If this doesn’t get me some action, I don’t know what else to try.

CCIE R&S Written Materials

I’m scheduled to take the CCIE R&S Written exam on 10 July at Cisco Live, and I’ve been asked by a handful of people on Twitter exactly what materials I’m using. I figured it would be a good idea to let everyone know so that we all can determine whether or not I’m on the right track. I may get to the exam and find out that the books I’ve been reading aren’t even close. It’s happened before.

SLA Monitoring on the PIX/ASA

We're working on an data center design for a customer, and they've dropped in two ISP links – each with it's own managed router and public IP space off one of the Ethernet interfaces.  The idea is that they want…

Renesys Analysis of SuproNet Announcement Debacle

Earl Zmijewski of Renesys has an analysis of the SuproNet incident that took down a good bit of the Internet on Monday.  From the blog: This single Czech provider announcing a single prefix caused a huge increase in the global…

Cheat Sheets from Packetlife.net

My friend Josh over at blindhog.net has found a collection of cheat sheet gems for the network dude(tte).  There’s sheets on BGP, OSPF, Subnetting, QoS, connector types, and more.  Check it out. Cheat Sheets – Packetlife.net