Operations Manager to OMi Migration Path

HP has finally announced a migration path for Operations Manager to OMi. It’s about time too. This looks like a good path. If you want to stick with HP Software for managing...

Christmas Change Freeze - Good or Bad?

We’re approaching Christmas, and for many of us, that means we’re about to enter an extended change freeze. This means an extended period when we shouldn’t change anything, hoping to improve stability. ITIL Change Management...

War Stories: Unix Security

This article is Part 8 in a 12-Part Series. Part 1 - War Stories: Loops that Permanently Broke the Network Part 2 - War Stories: Switches Lying about Duplex Mismatches...

Outsourcing Mistakes

Outsourcing is complex, and there are lots of ways it can go wrong, or simply fail to deliver. I’ve put together a list of things that I see going wrong...

Juniper SRX-110H EoL

Somehow I missed this when it was announced, but the Juniper SRX-110H-VA is End of Life, and is no longer supported for new software releases.

Wipebook - A Portable Whiteboard

It is a stereotype, but engineers really do like whiteboards. Problem is, you can’t carry one around with you. Plus there’s still a few unenlightened employers who don’t provide whiteboards....

iRules/Tcl - Watch the Comments

It’s pretty common practice to ‘comment out’ lines in scripts. The code stays in place, but doesn’t get executed. Perfect for testing, when you might need more debug output, or you want...

Complexity vs Security

Many of the ‘security’ measures in our networks add complexity. That may be an acceptable tradeoff, if we make a meaningful difference to security. But often it feels like we...

War Stories: Cursed VLANs

This article is Part 7 in a 12-Part Series. Part 1 - War Stories: Loops that Permanently Broke the Network Part 2 - War Stories: Switches Lying about Duplex Mismatches...

Ops Work vs Project Work

There’s a constant tension between delivering new services, and running the existing services well. How do you figure out how to prioritise work between Operations tasks and Project work? Skewing...

Meeting Rules

Years ago a wise engineer gave me these rules for meetings:

Cumulus in the Campus?

Recently I’ve been idly speculating about how campus networking could be shaken up, with different cost and management models. A few recent podcasts have inspired some thoughts on how Cumulus Networks might fit...