Implementing and Monitoring RIB on Cisco IOS XR Software

Configuration Examples for RIB Monitoring

 

Command or Action

 

Purpose

Step 6

show route [afi-all

ipv4 ipv6] [unicast

Displays the current routes in RIB that share a given

 

multicast safi-all]

ip-address mask

number of bits with a given network.

 

longer-prefixes

 

 

Example:

RP/0/RP0/CPU0:router# show route ipv4 unicast 192.168.111/8 longer-prefixes

Step 7

show route [afi-all

ipv4 ipv6] [unicast

Displays the next hop gateway or host to a destination

 

multicast safi-all]

next-hopip-address

address.

Example:

RP/0/RP0/CPU0:router# show route ipv4 unicast next-hop 192.168.1.34

Configuration Examples for RIB Monitoring

RIB is not configured separately for the Cisco IOS XR system. RIB computes connectivity of the router with other nodes in the network based on input from the routing protocols. RIB may be used to monitor and troubleshoot the connections between RIB and its clients, but it is essentially used to monitor routing connectivity between the nodes in a network. This section contains displays from the show commands used to monitor that activity. The following sample output is provided:

Output of show route Command: Example, page RC-200

Output of show route backup Command: Example, page RC-201

Output of show route best-local Command: Example, page RC-201

Output of show route connected Command: Example, page RC-201

Output of show route local Command: Example, page RC-201

Output of show route longer-prefixes Command: Example, page RC-202

Output of show route next-hop Command: Example, page RC-202

Output of show route Command: Example

The following is sample output from the show route command when entered without an address:

RP/0/RP0/CPU0:router# show route

Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP

O - OSPF, IA - OSPF inter area, N1 - OSPF NSSA external type 1

N2 - OSPF NSSA external type 2, E1 - OSPF external type 1

E2 - OSPF external type 2, E - EGP, i - ISIS, L1 - IS-IS level-1 L2 - IS-IS level-2, ia - IS-IS inter area

su - IS-IS summary null, * - candidate default U - per-user static route, o - ODR, L - local

Gateway of last resort is 172.23.54.1 to network 0.0.0.0

C10.2.210.0/24 is directly connected, 1d21h, Ethernet0/1/0/0

L 10.2.210.221/32 is directly connected, 1d21h, Ethernet0/1/1/0

C 172.20.16.0/24 is directly connected, 1d21h, ATM4/0.1

Cisco IOS XR Routing Configuration Guide

RC-200

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Cisco Systems IOS XR manual Configuration Examples for RIB Monitoring, Output of show route Command Example, RC-200

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.