BGP RR Design – Part 2

BGP RR Fig.10

This is a continuation from Part 1 9. ACME VPN RR's Design: So the current total number of PE's dedicated for VPN … [Read more...]

BGP RR Design – Part 1

BGP RR Fig.12

1. Introduction In this post we will be looking at large scale RR design by using a fictional ISP ACME  as a reference. As … [Read more...]

IP FRR and Micro-loops Part 2

IP FRR Fig.20

This is a continuation from Part 1 Remote LFA At this point we already know that simple LFA doesn't always provide full … [Read more...]

IP FRR and Micro-loops Part 1

IP FRR Fig.24

Introduction In this post we will take a look at IP FRR and Micro-loops. If the reader already doesn't have some kind of … [Read more...]

MPLS TE Design -Part 3

MPLS-TE-Fig.23

This is a continuation from Part 2 Fast Reroute Why Fast Reroute? Many NSP’s like ACME have traffic with tight SLAs. For … [Read more...]

MPLS TE Design -Part 2

MPLS-TE-Fig.15

This is a continuation from Part 1 Case for LDPoRSVP As we mentioned at the very beginning that ACME provides L3VPN and … [Read more...]

MPLS TE Design -Part 1

MPLS-TE-Fig.6

In this post we will be exploring different aspects of Traffic Engineering (RSVP-TE) from a design perspective using … [Read more...]

Policy-based Tunnel Selection (PBTS) on Cisco IOS-XR

pbts

Recently, I had to look after PBTS on Cisco ASR9K platform and faced some issues, here are some results about my tests. PBTS … [Read more...]

HTIRW: Standards Bodies

(yes, I know, it's been a while... But it's time to get back to this series) Up to this point in this series, we've been … [Read more...]

NG mVPN-Control Plane Overview

mVPNFig.1

In this post we will be exploring the shortcomings of MVPN (Draft Rosen/RFC 6037), with a focus on how NG-MVPN technologies … [Read more...]

Network Design Concepts Part-3

In the first article of the series, reliability and resiliency are covered. We should know that whatever device, link type or … [Read more...]

HTIRW: Provider Peering and Revenue Streams (Part 2)

This is a continuation from last week's post on provider peering streams. Second Example: Customer to Noncustomer Assume … [Read more...]

HTIRW: Provider Peering and Revenue Streams (Part 1)

htirw-fig-02

In the last post in this series, I described several types of providers -- and even how those descriptions are no longer … [Read more...]

Thinking Through Title II Regulation

Over at CircleID, Geoff Huston has a long'ish article on Title II regulation of the Internet, and the ideals of "net … [Read more...]

EVPN: Intro to next gen L2VPN

Fig 1

Introduction: With the ascent of DCI, a new set of requirements emerged which are not fully addressed by current L2VPN … [Read more...]