Appendix A Configuration Register Information

Setting the Configuration Register While Running Cisco IOS

10 IP broadcasts with ones

09Do not use secondary bootstrap

08Break disabled

07OEM disabled

06Ignore configuration disabled

05Fast boot disabled

04Fan boot disabled

03-00 Boot to ROM monitor

If the prompt is “rommon1”, the confreg command displays the virtual configuration register currently in effect. It includes a description of the bits. See the following sample output:

rommon1 > confreg

Configuration Summary enabled are:

load rom after netboot fails console baud: 9600

boot: the ROM Monitor

Do you wish to change the configuration? y/n [n]

Setting the Configuration Register While Running Cisco IOS

The configuration register can be set in the configuration mode with the config-register 0x value command. See the following sample output:

Router# configure terminal

Enter configuration commands, one per line. End with CNTRL/Z.

Router (config)# config-register 0x2142

Router (config)# end

Router#

%SYS-5-CONFIG_I: Configured from console by console

Setting the Configuration Register While Running ROM Monitor

If the prompt is “>”, the or0x value command sets the configuration register. See the following sample output:

>o/r 0x2102

>

If the prompt is “rommon1”, the confreg command sets the configuration register. It prompts the user about each bit. See the following sample output:

 

 

 

rommon1>

confreg

 

 

 

 

 

 

 

 

Confiuration Summary

 

 

 

 

 

 

 

 

enabled are:

 

 

 

 

 

 

 

 

 

load rom

after netboot fails

 

 

 

 

 

 

 

 

console baud:

9600

 

 

 

 

 

 

 

 

boot: the ROM

Monitor

 

 

 

 

 

 

 

 

do you wish to change the configuration

y/n

[n]:

y

 

 

 

enable

“diagnostic mode”? y/n

[n]:

n

 

 

 

 

 

 

enable

“use

net in IP bcast address”?

y/n

[n]:

n

 

 

 

disable

“use

rom after netboot fails”?

y/n

[n]:

n

 

 

 

enable

“use

all zero broadcast”? y/n

[n]:

n

 

 

 

 

 

Cisco 7200 VXR Installation and Configuration Guide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A-6

 

 

 

 

 

 

 

OL-5013-09

 

 

 

 

 

 

 

 

 

 

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Cisco Systems 7200 VXR manual Setting the Configuration Register While Running Cisco IOS
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7200 VXR specifications

The Cisco Systems 7200 VXR Series is a robust and highly scalable modular router designed to meet the demands of service providers and enterprises seeking high-performance solutions for their network infrastructures. Launched as part of the Cisco 7200 series, the VXR (Virtual Extensible Routing) variant enhances capabilities while providing effective support for a wide range of applications, including Internet Protocol (IP) routing, Voice over IP (VoIP), and Virtual Private Network (VPN) configurations.

At the core of the 7200 VXR is its modular design, which enables network administrators to customize the router according to their specific needs. The router supports a variety of interface cards, processing engines, and power supply options, ensuring flexibility for diverse network environments. This modularity facilitates easy upgrades and expansions, making it ideal for growing enterprises and service providers looking to future-proof their networks.

One of the standout features of the Cisco 7200 VXR is its impressive routing performance. It can handle a high level of traffic with low latency, which is critical for bandwidth-intensive applications. The router supports a wide array of routing protocols, including Border Gateway Protocol (BGP), Open Shortest Path First (OSPF), and Integrated Intermediate System-to-Intermediate System (IS-IS), providing versatility for various network topologies.

The 7200 VXR also incorporates advanced features for enhanced security and reliability. With support for IPsec VPNs, it enables secure data transmission across untrusted networks. The router also includes features like Quality of Service (QoS) for prioritizing network traffic, ensuring critical applications receive the bandwidth they require even during peak loads.

In terms of scalability, the Cisco 7200 VXR can support hundreds of thousands of routes and MAC addresses, making it suitable for large metropolitan area networks (MANs) as well as enterprise backbone applications. It also provides the capability to support IPv4 and IPv6 networks, preparing organizations for a transition to next-generation internet protocols.

Additional characteristics of the Cisco 7200 VXR include enhanced manageability through the Cisco IOS software, which offers a comprehensive command-line interface and support for network management protocols. The router is also energy-efficient, with options for redundant power supplies that ensure continuous availability and minimal downtime in mission-critical applications.

Overall, the Cisco Systems 7200 VXR represents a powerful solution that combines performance, scalability, and security, making it an excellent choice for organizations looking to enhance their network capabilities in a rapidly evolving technological landscape.
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