Is it RIB or FIB capacity?

When reading or hearing about IP route capacity of routing gear it is often stated that a piece of equipment will support x-number of routes.  This number is a large number typically – and can sound impressive. So if you hear or read of one capacity number mentioned keep in mind there is more than... » read more

Calculating System Thermal Output

The Internet abounds with information on the topic of thermal output. I’ve collected the following formulas and placed them here for my quick reference. Watts = 0.293 * BTU-Hr Watts = 3,530 * Tons BTU-Hr = 3.41 * Watts Tons = 0.000283 * Watts   For example, PacketLight PL-1000TN Optical Transport Unit PSU rated at... » read more

How I Implemented a CALEA Solution (With Juniper JUNOS)

The following information was first published on 11/15/2007 at http://www.unixadmin.cc/calea/ CALEA is an acronym for, “Communications Assistance for Law Enforcement Act“. Enough time has passed that an update to this document is needed. The following should be considered historical. Header Draft Version: 0.1.2 Service: Flow-Tap, IPSec and Dynamic Tasking Control Protocol (DTCP) Operating System: Juniper... » read more

New Year – New Blog System

With the new year it seemed like a good time to make the jump to WordPress.  Started the moving process about a week ago and it’s almost finished now.  A few more items to go and it will be fully moved over.  

Bandwidth requirements on the rise (still)

The need for additional bandwidth is not news, however the number of devices carried per person that deliver bandwidth is taken more for granted before realized. If you stop and think about it, it use to be that a household would have a single computer with a single Internet connection. As time progresses forward demand... » read more

IP Subnet Weighting Table

Converting binary to decimal/decimal to binary This is a page with two tables that helps with visualizing the conversion from binary to decimal and from decimal to binary. It’s not pretty or anything, but it does the job I think. Below link for downloading a PDF version. Weighting Table – Converting binary to decimal  ... » read more