Another big difference between IOS and IOS XR is the configuration model. IOS is a single stage model meaning that as soon as you make a change, it is applied to the active running config. With IOS XR, you have a running (active) config that you cannot modify directly, all your changes are made in ASR9000/XR: BNG deployment guide. See this next section on how to map IOS-XR MQC (modular Qos configuration) actions to the parameterized QOS equivalent. Previous Post ASR9000 BNG Training guide setting up PPPoE and IPoE sessions. Search among more than 1.000.000 user manuals and view them online in .pdf IP Routing on Cisco IOS, IOS XE, and IOS XR: An Essential Guide to Understanding and Implementing IP Routing Protocols (Networking Technology) [Brad Edgeworth, Aaron Foss, Ramiro Garza Rios] on Amazon.com. *FREE* shipping on qualifying offers. An Essential Guide to Understanding and Implementing IP Routing Protocols Cisco's authoritative ASR-9000/IOS-XR Hardware Architecture, QOS, EVC, IOS-XR Configuration and Troubleshooting BRKSPG-2904 LJ Wobker Technical Marketing Engineer High End Routing & Optical Group Cisco IOS XR MPLS Configuration Guide. Preface vii. Document Revision History for Release 3.2 vii. Obtaining Docum iii. Cisco IOS XR MPLS Configuration Guide. Preface vii. to propagate MPL QoS). This is done using a special local label (explicit-null) advertised to the peers after which This guide assumes you have an MPLS network configured (minimum MPLS activated/running, internal IGP protocol and LDP sessions established). This configuration I have already presented as part of older article on basic IOS XR configuration: Cisco IOS XR - Complete Getting Started Examples Guide - Part 2/2. Step 1) Create a VRF A vulnerability in the quality of service (QoS) subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated pri