Use tcpdump on eXR for control plane troubleshooting - part 1
This article introduces how to use tcpdump on Cisco XR platforms running eXR, such as the ASR 9000 and NCS 5500.
Tutorials
October 2024
May 2024
SRv6 on NCS 500/5500: SRv6 QoS
QoS Modes for SRv6 Transport on the NCS 5500/500 & 5700 Platforms. Detailed review and configuration examples various configuration options across releases.
April 2024
Next Generation Utility WAN Architecture
Brief on the next gen utility WAN transport & specific services including Layer 2 Teleprotection using Cisco’s NCS portfolio
August 2023
Introducing NC57-48Q2D : Low Speed NCS 5700 Line Card
Introduction and deep dive to the NC57-48Q2D-(SE)-S, dense low speed line card in the cns 5700 modular portfolio. Discusses LC architecture and use cases in details.
May 2023
Implementing EVPN ELAN over SRv6 Transport on NCS 500/5500
Ethernet VPN based layer 2 multipoint (ELAN) service over SRv6 uSID Transport on NCS 500 and NCS 5500 series platforms. Includes detailed explanation of configuration and verification steps
Introducing NC57-MOD-S: NCS 5700 Modular Line Card
Introduction to Cisco NC57-MOD-S Line card. A modular Line card for NCS 5500 Modular Chassis. Detailed LC architecture, Capabilities and Use Cases.
March 2023
SRv6 Transport on NCS5500/5700/500 : Capabilities & Resource Monitoring
SRv6 Platform capabilities and resource monitoring
Segment Routing v6 (SRv6) Transport on NCS 5700
SRv6 Transport on NCS 5700. Basic configuration approach comparison with NCS 5500
January 2023
Introducing NCS-57D2-18DD-SYS
Introduction to NCS-57D2
December 2022
Simple, Scalable, Programmable & Sustainable Metro with Cisco NCS5500/NC5700
This document covers the latest trends in metro network architecture
September 2022
Implementing Layer2 VPN Over SRv6 Transport on NCS 5500/500
L2VPN config and verification over SRV6 Transport on NCS 5500/500 series platforms
Implementing Layer3 VPN over SRv6 Transport on NCS 5500/500
L3VPN configuration and verification over SRv6 Transport on NCS 500 and NCS 5500 platforms
August 2022
Understanding MDB (Modular Databases) on NCS5700 systems
MDB profile on J2 based systems
Segment Routing v6 (SRv6) Transport on NCS5500/NCS500 Platforms - Part 1
This is the first document in the series which will focus on SRv6 basics and underlay transport bringup
May 2022
QoS Enhancements on NCS5700 - IOS-XR 7.6.1
This Article covers the latest QoS Innovation brought to NCS 5700 Series Platforms with IOS XR 7.6.1
Introducing NCS-57C1-48Q6D-S Router
Introduction to NCS-57C1
April 2022
Latest ACL Enhancements on NCS5500/NCS5700 - IOS-XR 7.6.1
This document will introduce the behaviour new enhancements w.r.t ACL feature on NCS5500
LPTS Enhancements on NCS5500/NCS5700
This document will cover the latest enhancements on the newer generation NCS5500 platforms
October 2021
Introducing the new QSFP-DD MPA: NC57-MPA-2D4H-S
Introducing the new QSFP-DD modular port adaptor
September 2021
Introducing NCS57C3-MOD Routers
Very happy to announce the new member of the NCS5500 fixed routers: the NCS57C3-MOD
Egress IPv6 ACLs on NCS5500
This document will describe IPv6 ACL Egress ACLs on NCS5500 J/J+ and highlight the enhancements when it comes to J2
IOS XR 7.4.1 Innovations in NCS5500/NCS5700/NCS500 Platforms
New features and hardware supported in IOS XR 7.4.1
ACL’s on NCS5500 BVI Interfaces
This document will introduce the behaviour of ACL on BVI Interfaces
August 2021
Access-List Enhancements on NCS5500 J2 based platforms
This document will introduce the behaviour of ACL on J2 based platforms
Coexistence Between BFD over Bundle and BFD over Logical Bundle
This document will cover the Coexistence Between BFD over Bundle and BFD over Logical Bundle and why it is needed
Full Internet in Jericho2 NPU and Programming Speed
Understand the J2 memory utilization and the programming / convergence speed
June 2021
Multipath and MultiHop BFD sessions on NCS5500 and NCS500
This document covers the implementation of BLB and BFD over BVI on NCS5500 and NCS500
BFD over Bundle Interfaces on NCS5500 and NCS500
This document explains the BFD over Bundle Interfaces on NCS5500 and NCS500
May 2021
NCS5500 Chassis New Generation Commons
New route processor, new power supply and new fan trays / fabric cards for the NCS 5500 chassis
Introducing NCS 57B1 Routers
Introduction of the new NCS 57B1 Routeurs
Understanding the BFD Hardware Programming on NCS55xx and NCS5xx
This document aims to cover the hardware programming of the BFD in the NCS55xx pipeline architecture. It also will cover the resource utilisation and how to read and interpret the CLI outputs
April 2021
BFD Architecture on NCS55xx and NCS5xx
Implementation of BFD on NCS5500 and NCS500
March 2021
IOS XR 7.3.1 Innovations in NCS5500/NCS5700/NCS500 Platforms
What’s new in IOS XR731 in term of features and newly supported hardware
NCS-5500 Interface and QoS 1D Scale
NCS-5500 Interface and QoS 1D Scale
February 2021
Y.1564 Service Activation Testing on NCS : Part2
Tutorial Explaining Y.1564 color aware mode configuration and use case on NCS 500 and NCS 5500 series routers
NCS55x and NCS5xx Domain Based LPTS Policers
This document will explain the domain based LPTS policers and its use cases
December 2020
Y.1564 Service Activation Testing on NCS : Part1
First Part of the Tutorial series explaining Y.1564 SADT on NCS 5500 and NCS 500 routers
Decommissioning the Internet-Optimized Mode
Brief note on the removal of the internet-optimized mode
October 2020
NCS-5500 Fabric Migration
v1 to v2 NCS-5500 ugprade procedure
September 2020
Introduction to NCS55xx and NCS5xx LPTS
Introduction to NCS55xx and NCS5xx LPTS
Chained ACL for NCS55xx and NCS5xx
This document will discuss the concept and use cases of Chained ACL for NCS55xx and NCS5xx
ACL Based Forwarding and Object Tracking for NCS5xx and NCS55xx
This document aims to cover the concept of ABF and the used of object tracking with ABF
User Defined Field NCS55xx and NCS5xx
This document aims to deep dive into UDF ACL for NCS55xx and NCS5xx ACL’s
BGP EVPN based Port Active MultiHoming
Tutorial Explaining step by step approach for BGP EVPN service with port active multihoming
August 2020
NCS-5700 400G Optics Technology and Roadmap
NCS-5700 400G Optics Technology and Roadmap
User Defined Key - UDK for NCS55xx and NCS5xx
This document aims to deep dive into the concept of User Defined Keys on Cisco NCS55xx and NCS5xx
ACL IP Fragments Matching - NCS55xx and NCS5xx
This document provides the capabilities of NCS5xx and NCS55xx to secure the data plane by filtering the fragmented packets
ACL Packet Length Matching - NCS55xx and NCS5xx
This document describes the implementation of ACL packet length matching on NCS55xx and NCS5xx
July 2020
NCS5500 Routing Resource with 2020 Internet (and Future)
What a full internet table in 2020 consumes in the NCS5500?
BGP FlowSpec to ACL Script
Introduction and validation of the BGPFS2ACL script
April 2020
MACsec on NCS-5500 - Technology and Platform Overview
MACsec on NCS-5500 - Technology and Platform Overview
BGP EVPN and L3VPN Interworking
BGP EVPN and L3VPN interworking is a way to connect EVPN domain such as a DC or CO over an IPVPN Core/WAN network. This post is going to cover configuration and Implementation of BGP EVPN and L3VPN Interworking on IOS-XR routers.
NCS5500 FIB Scale Test [Lab Series 04]
Testing full internet views and up to 4M prefixes in J+/eTCAM NCS5500 systems
BGP-EVPN based Single-Active Multi-Homing
Implementation and configuration of BGP-EVPN based Single-Active Multi-Homing on IOS-XR routers.
February 2020
NCS5500 Hw-module Profiles
WIP document describing the various options behind the NCS5500 hw-module CLI
October 2019
NCS5500 Fabric Redundancy Tests [Lab Series 03]
How an NCS5500 modular chassis behaves with 5 out of 6 fabric cards?
September 2019
Testing NDR on NCS5500 36x 100GE Line Cards [Lab Series 02]
Test to measure and explain the NDR on NCS5500 36x100G-SE line cards
NCS5500 Performance and Load-Balancing at Scale [Lab Series 01]
Test performed on fully wired chassis to validate the PPS performance and the load balancing features
Testing the NCS5500: The Lab Series
Test cases and demos of the NCS5500 products to speed up your own validation process
Introducing 400GE on NCS5500 Series
Introducing two new 400GE capable line cards in the NCS5500 portfolio: NC55-24DD and NC55-18DD-SE
BGP FlowSpec on NCS5500: A few tests on scale, rate and memory usage
BGP Flowspec implementation and resource management on NCS5500 Series
July 2019
BGP-EVPN IRB Configuration for Inter-Subnet Routing
In this post we will cover the EVPN-IRB configuration on NCS5500
April 2019
NCS5500 QoS Part 2 - Verifying Buffering in Lab and Live Networks
Second part of the NCS5500 QoS Series: Packet Buffering illustrated in lab and in production networks
NCS5500 QoS Part 1 - Understanding Packet Buffering
First part of the NCS5500 QoS Series: Packet Buffering
September 2018
Configure BGP-EVPN based Layer-2 VPN service
In this post we will cover the provisioning of BGP-EVPN based Layer-2 VPN service
BGP-EVPN based Active-Active Multi-Homing
This post covers the configuration of BGP-EVPN based Multi-Homing of devices on NCS 5500.
Configure BGP-EVPN Control-Plane & Segment Routing based MPLS Forwarding-Plane
This is the first part of the series for EVPN configuration on NCS5500. In this post we will focus on configuring BGP-EVPN Control-Plane & Segment Routing Forwarding-Plane.
August 2018
NCS5500 FIB Programming Speed
In this post, we focus on the speed the system can program routes in RP and in hardware
July 2018
Security ACL on NCS5500 (Part2): Hybrid ACL
Second part on the NCS5500 Access-lists. This time, we focus on the Hybrid ACL.
Security ACL on NCS5500 (Part1)
First part of a series of posts on NCS5500 Access-lists
NCS5500 Things to Know / Q&A
Various questions and answers related to the NCS5500 platform and its software
May 2018
Mixing Base and Scale Line Cards in the same Chassis
Introduction of the “Selective Route Download” feature allowing the mix of Base and Scale line cards in the same NCS5500 Chassis.
April 2018
Netflow on NCS5500: Test Results
Second part of the Netflow on NCS5500 Tuto. This time the test results
NCS5500 Routing in VRF
Is it possible to run the Internet Feed inside a VRF/VPN in an NCS5500 ?
March 2018
NCS5500 URPF: Configuration and Impact on Scale
In this article, we analyse the configuration and impact of URPF on NCS5500 systems
Understanding NCS5500 Jericho+ Systems and their scalability
Introduction to the NCS5500 Jericho+ Systems and their Scalability
February 2018
Netflow, Sampling-Interval and the Mythical Internet Packet Size
Blog post describing the NCS5500 Netflow implementation.
Port Assignments on NCS5500 and NCS5700 Platforms
Brief post on port allocation / NPU for NCS5500
January 2018
Large Routing Tables on “Scale” NCS 5500 Systems (S01E05)
Post #5 on the NCS5500 Resources: very large routing table in eTCAM systems, illustrated in a YouTube Video
December 2017
Full Internet View on “Base” NCS 5500 Systems (S01E04)
Post #4 on the NCS5500 Resources with a YT video to illustrate full internet support on non-eTCAM systems
August 2017
Understanding NCS5500 Resources (S01E03)
Third post on the NCS5500 Resources focusing on IPv6 prefixes
Understanding NCS5500 Resources (S01E02)
Second post on the NCS5500 Resources focusing on IPv4 prefixes
Understanding NCS5500 Resources (S01E01)
First post on the NCS5500 Resource: today, we cover the platform and the forwarding ASICs