Before you begin, Verifying the version of cisco ios software, Clocking requirements for cisco 3825 router – Cisco 3825 User Manual
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Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
OL-15667-03
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,
.
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
for an example of clocking using the Cisco 3825 router).