Implementing BGP on Cisco IOS XR Software

How to Implement BGP on Cisco IOS XR Software

Tuning the BGP Best Path Calculation, page RC-39(optional)

Indicating BGP Backdoor Routes, page RC-41(optional)

Configuring Aggregate Addresses, page RC-43(optional)

Redistributing iBGP Routes into IGP, page RC-44(optional)

Redistributing Prefixes into Multiprotocol BGP, page RC-46(optional)

Configuring BGP Route Dampening, page RC-48(optional)

Applying Policy When Updating the Routing Table, page RC-52(optional)

Setting BGP Administrative Distance, page RC-53(optional)

Configuring a BGP Neighbor Group, page RC-55(optional)

Configuring a BGP Neighbor, page RC-58(required)

Configuring a Route Reflector for BGP, page RC-60(optional)

Configuring BGP Route Filtering by Route Policy, page RC-62(optional)

Disabling Next Hop Processing on BGP Updates, page RC-64(optional)

Configuring BGP Community and Extended-Community Filtering, page RC-65(optional)

Configuring Software to Store Updates from a Neighbor, page RC-67(optional)

Disabling a BGP Neighbor, page RC-69(optional)

Resetting Neighbors Using BGP Dynamic Inbound Soft Reset, page RC-71(optional)

Resetting Neighbors Using BGP Outbound Soft Reset, page RC-71(optional)

Resetting Neighbors Using BGP Hard Reset, page RC-72(optional)

Clearing Caches, Tables and Databases, page RC-73(optional)

Displaying System and Network Statistics, page RC-73(optional)

Monitoring BGP Update Groups, page RC-75(optional)

Enabling BGP Routing

Perform this task to enable BGP routing and establish a BGP routing process. Configuring BGP neighbors is included as part of enabling BGP routing.

Note At least one neighbor and at least one address family must be configured to enable BGP routing. At least one neighbor with both a remote AS and an address family must be configured globally using the address family and remote as commands.

Prerequisites

BGP must be able to obtain a router identifier (for example, a configured loopback address). At least, one address family must be configured in the BGP router configuration and the same address family must also be configured under the neighbor.

Cisco IOS XR Routing Configuration Guide

RC-28

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Cisco Systems IOS XR manual Enabling BGP Routing, Prerequisites, RC-28

IOS XR specifications

Cisco Systems IOS XR is an advanced operating system designed specifically for high-performance routers and service provider networks. It serves as the backbone for many of Cisco's high-end routing platforms, enabling service providers to manage their networks with increased efficiency, flexibility, and scalability.

One of the main features of IOS XR is its modular architecture. This allows for the independent operation of various components within the OS, facilitating the deployment of new features and updates without affecting the overall stability of the system. This modularity ensures that service providers can implement rapid changes and enhancements while maintaining service continuity.

Another characteristic of IOS XR is its support for 64-bit architecture, which provides enhanced performance and the ability to manage larger amounts of data. This is particularly beneficial for service providers that deal with high traffic volumes and require robust data processing capabilities. The utilization of 64-bit technology also enables the operating system to utilize memory more efficiently, allowing for greater scalability.

IOS XR incorporates advanced technologies such as Distributed System Architecture (DSA) and Multiple Routing Instances (Merging Routes). DSA allows for the distribution of routing processes across multiple hardware resources, maximizing performance and redundancy. Multiple Routing Instances enable operators to create separate logical routing tables for different services, improving isolation and efficiency in managing network traffic.

The operating system also focuses heavily on security, featuring extensive encryption methods and access controls to safeguard network resources. IOS XR supports various authentication protocols, ensuring secure access to routers and switches. In addition, the OS includes comprehensive logging and monitoring capabilities, allowing network administrators to track activities and respond quickly to potential threats.

Another critical aspect of IOS XR is its adherence to the principles of service-oriented architecture (SOA). This approach permits the development of applications and services that can operate independently, fostering innovation and enabling service providers to tailor their offerings based on customer demands.

Ultimately, Cisco IOS XR is a powerful, reliable operating system that meets the complex needs of modern telecommunications networks. With its focus on modularity, performance, security, and scalability, it enables service providers to deliver high-quality, resilient services to their customers while efficiently managing network resources. As the industry continues to evolve, IOS XR remains a vital tool for those aiming to stay competitive in the ever-changing landscape of networking.