Cisco Systems 3825 manual Before You Begin, Verifying the Version of Cisco IOS Software

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Before You Begin

For sample configurations, see Appendix B, “Configuration Examples”.

For additional configuration topics, see the Cisco IOS configuration guide and command reference publications. These publications are available on the Documentation DVD that came with your router, available online at Cisco.com, or as printed copies that you can order separately.

Note If you skipped Chapter 2, “Cisco IOS Software Basics,” and you have never configured a Cisco router, return to Chapter 2 and read it now. The chapter contains important information that you need to successfully configure your router.

Before You Begin

Before you configure the Cisco 3825 router in a RAN-O solution, you should be aware of the following caveats:

•A Cisco IOS Release 12.4(16)MR1 or later, “c3825-iprank9-mz” image must be installed on the Cisco 3825 router.

•If you are using the Cisco 3825 in a redundant configuration and are attaching the router to a device that uses spanning tree, configure port first on the device to avoid problems with Hot Standby Router Protocol (HSRP) at start up.

•In case of competing equal priorities, HSRP uses the IP address to determine the active router. Therefore, you should ensure that the order of the IP addresses of the T1/E1 interfaces on the active router corresponds to the order of the IP addresses of the T1/E1 interfaces on the standby router.

Verifying the Version of Cisco IOS Software

To implement the Cisco 3825 router in a RAN-O solution, Cisco IOS Release 12.4(16)MR or later must be installed on the router. To verify the version of Cisco IOS software, use the show version command.

The show version command displays the configuration of the system hardware, the software version, the names and sources of the configuration files, and the boot images.

Clocking Requirements for Cisco 3825 Router

Network clocking is the means by which a clock signal is generated or derived and distributed through a network and its individual nodes for the purpose of ensuring synchronized network operation.

Network clocking is an important consideration in the RAN-O networks. A solid network clocking design is essential to the successful deployment of any RAN-O network. The purpose of this section is to describe the use of network clocking for RAN-O networks using the Cisco 3825 router (see Figure 4-1for an example of clocking using the Cisco 3825 router).

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

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