j2sw
Cisco and Verizon demonstrate multi-haul
As Internet traffic grows and becomes more dynamic, optical transport networks for sub-sea, terrestrial long haul and metro need more capacity.
How VRFs work
virtual routing and forwarding (VRF) is a technology that allows multiple instances of a routing table to co-exist within the same router
Looking Glass Links
This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this content, you must be a member of Justin’s Patreon Unlock with PatreonAlready a qualifying Patreon … Read more
Ethernet MTU and overhead
how much overhead do I need to account for on my transport network? I have put together a quick list to help when you are calculating your overhead
Metro Ethernet Terms and usage
As some of you reading this dive into metro ethernet you should know some terminology • User-Network Interface (UNI): The UNI is a physical Ethernet port on the service provider side of the network along with a predefined set of parameters to provide data, control and management traffic exchange with the end-customer CPE device. The customer … Read more
BGP Local Pref and how it can influence traffic
what does “bgp local-pref” do for me? The short answer is it allows you to prefer which direction a traffic will flow to a given destination
Importance of PIM in WISP LTE deployments
PIM sweeps are a common thing in the Cellular field. One of the first questions folks often ask is what is a PIM sweep?
ALG 5GHZ backhaul before and after
The following are results from a series of tests of AGLcom’s parabolic dish antennas on an existing link that is 5.7 miles long.
RealChoice TV bandwidth utilization
Roku Premier streaming at 1080p utilizing Realchoice. Helpful for WISPs looking to deploy IPVTV to their customers Below is a 5-minute average over a half hour or so.
Thoughts on Carrier Redundancy
Recently there have been discussions on some lists about carrier redundancy. I figured I would sum up some thoughts and add my own,
Cisco 2960X I/O usage
While double checking some stats on a network I came across this in Librenms in regards to a Cisco 2960X