From the archives – Evolution of a network guy part 2
Being hired as a tech support tech at tctc.com would forever change my life. It was like being shown who was behind the curtain. All of a sudden this world of T1 lines, modem banks, and DNS servers was before me. I couldn’t soak up enough of it. It was here I met some of … Read more
Understanding Cisco Optics
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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.