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Provider Networking: What is a BRAS/BNG in Telecom?
A Broadband Remote Access Server or Broadband Netwok Gateway (BRAS/BNG) is a key component of an Internet Service Provider’s network. Let’s take a look at what exactly a BRAS/BNG is and how it works.
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How Telecom Multiplexers Work: From FDM to T1 and T3
In this two part article we’ll explore the history of the multiplexer, how it works, and why it is the backbone of provider networking.
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VPLS Configuration Issues in Cisco Modeling Labs (IOS XRd)
Having issues configuring VPLS/EVPN on IOS XRd or IOS XRv9000k? This article explains why and how to work around the issue.
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How VPWS and VPLS Layer 2 VPNs Work
VPWS and VPLS are both Layer 2 VPN technologies that carriers can use to transport Ethernet over an MPLS core. In this article we’ll look at the similarities and differences between the two.
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A History of the Leased Line
Introduction The concept of a leased line, where a customer pays a service provider for a private WAN connection predates computer networking. In fact, the origins of the leased line were in the telegraph days. Over the years the term has been used to describe a multitude of different services. It’s easy to confuse different…
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Why Are Route Reflectors Needed
Route reflectors are a key component of service provider network design. I’ll be explaining the purpose of route reflectors in this article
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Provider Networking: Route Distinguishers vs Route Targets
This post explains why we need Route Distinguishers and Route Targets and what makes them different.