Implementing BGP on Cisco IOS XR Software

How to Implement BGP on Cisco IOS XR Software

 

Command or Action

Purpose

Step 10

 

 

password {clear encrypted} password

(Optional) Configures neighbor group nbr-grp-A to use

 

 

 

MD5 authentication with the password pswd123.

 

Example:

 

 

RP/0/RP0/CPU0:router(config-bgp-nbrgrp)#

 

 

password clear pswd123

 

Step 11

 

 

password-disable

(Optional) Overrides any inherited password configuration

 

 

 

from the neighbor group.

 

Example:

 

 

RP/0/RP0/CPU0:router(config-bgp-nbrgrp)#

 

 

password-disable

 

Step 12

 

 

receive-buffer-size socket-size[bgp-size]

(Optional) Sets the receive buffer sizes for neighbor group

 

 

 

nbr-grp-A to 45215 bytes for the socket buffer and 5156

 

Example:

bytes for the BGP buffer.

 

 

 

RP/0/RP0/CPU0:router(config-bgp-nbrgrp)#

 

 

receive-buffer-size 45215 5156

 

Step 13

 

 

send-buffer-sizesocket-size [bgp-size]

(Optional) Sets the send buffer sizes for neighbor group

 

 

 

nbr-grp-A to 8741 bytes for the socket buffer and 8741

 

Example:

bytes for the BGP buffer.

 

 

 

RP/0/RP0/CPU0:router(config-bgp-nbrgrp)#

 

 

send-buffer-size 8741 8741

 

Step 14

 

 

timers keepalive hold-time

(Optional) Sets the keepalive timer to 60 seconds and the

 

 

 

hold-time timer to 220 seconds for the BGP neighbor group

 

Example:

nbr-grp-A.

 

 

 

RP/0/RP0/CPU0:router(config-bgp-nbrgrp)# timers

 

 

60

220

 

Step 15

 

 

ttl-security

(Optional) Enables TTL security for eBGP neighbor group

 

 

 

nbr-grp-A.

 

Example:

 

 

RP/0/RP0/CPU0:router(config-bgp-nbrgrp)#

 

 

ttl-security

 

Step 16

 

 

update-sourceinterface-type interface-number

(Optional) Configures the router to use the IP address from

 

 

 

the Loopback0 interface when trying to open a session with

 

Example:

neighbor group nbr-grp-A.

 

 

 

RP/0/RP0/CPU0:router(config-bgp-nbrgrp)#

 

 

update-source Loopback0

 

Step 17

 

 

exit

Exits the current configuration mode.

 

Example:

 

 

RP/0/RP0/CPU0:router(config-bgp-nbrgrp)# exit

 

Step 18

 

 

neighbor ip-address

Places the router in neighbor configuration mode for BGP

 

 

 

routing and configures the neighbor IP address

 

Example:

172.168.40.24 as a BGP peer.

 

 

 

RP/0/RP0/CPU0:router(config-bgp)# neighbor

 

 

172.168.40.24

 

 

 

 

 

Cisco IOS XR Routing Configuration Guide

RC-57

Page 73
Image 73
Cisco Systems IOS XR manual Bytes for the BGP buffer, RC-57

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.