This document provides procedures on to how to retrieve or change the
IP address of the Cisco 6920 RateMux.
Note: The information in this document is based on Cisco RateMux version
2.5. For a description of the RateMux 6920, please refer to
Sheet - Cisco 6920 RateMUX Advanced MPEG-2 Multiplexer.
Note: After Cisco RateMux version 2.3, the 6920 comes with a fixed IP
address of 10.0.0.200. This is to facilitate the initial configuration of the
Cisco router. If you are running an older version, this document describes
How to Retrieve the IP Address from the RateMux.
For more information on document conventions, see the
Technical Tips Conventions.
Readers of this document should be knowledgeable of the
Quadrature Amplitude Modulation (QAM)
Digital Headend Interface (DHEI)
Digital Video Broadcasting-Asynchronous Serial Interface (DVB-ASI)
Selective bit rate reduction
The information in this document is based on the software and hardware
Cisco RateMux 6920 with a PowerPC card
The software connect.exe and/or HyperTerminal loaded on your PC
An Ethernet crossover cable
The information presented in this document was created from devices in
a specific lab environment. All of the devices used in this document started
with a cleared (default) configuration. If you are working in a live network,
ensure that you understand the potential impact of any command before using
The PowerPC card has one Ethernet port and one Debug port. You can use
these two ports to access the RateMux. See Figure 1 below.
Figure 1: PowerPC card on the Cisco RateMux 6920
The following two sections describe how to connect to the RateMux using
both the HyperTerminal and the connect.exe program.
Follow the instructions provided below to connect to the RateMux using
Connect a serial cable RS232 from the Debug port
on the PowerPC card to the Serial Port on your PC.
Note: The Terminal port is not used.
Figure 2: Connection topology using HyperTerminal
Start a HyperTerminal session on COM1 with the following settings:
Bits per second = 57600
Data bits = 8
Parity = None
Stop bits = 1
Flow control = None
Figure 3 shows a picture of the HyperTerminal settings.
Figure 3: HyperTerminal settings to connect to the
Turn the RateMux power OFF.
Select Call from the HyperTerminal Menu bar.
Power on the RateMux.
Within 10 seconds of turning on the RateMux, select
Connect from the HyperTerminal Call menu.
Click the mouse cursor on the open window in the HyperTerminal
Click Enter or the space bar
approximately once per second until the connection is established.
The first few lines show the BootLoader revision number and the IP
and Ethernet Mac address being used by the Cisco 6920. See Figure 4 below.
Figure 4: Display on the HyperTerminal after
power-cycling the RateMux
Another way access the RateMux is by launching the connect.exe program.
Cisco recommends that you put a shortcut of this program in the desktop or your
PC. Connect.exe establishes a connection from the PC to the RateMux via
Ethernet. This can be accomplished using a network connection or a crossover
Ethernet cable. See Figure 5 below.
Figure 5: Connecting using the Ethernet port and
Note: If you do not have a crossover cable, you can use two
straight-through cables connected to a common hub.
While using a crossover cable or a hub:
You can change the TCP/IP properties of your PC to accomplish this.
Once physically connected, use the following steps to establish
Power the RateMux OFF.
Start the connect.exe program by double-clicking
on the icon.
Click Connect under the Connection Menu, enter the
IP address of the RateMux, and click OK.
Power ON the RateMux.
Click the cursor on the open window and hit Enter
or space bar until the connection is established.
Figure 6 shows the connect.exe window after connection is
Figure 6: Connect.exe window after the connection
to the RateMux has been established
Usually, a unique IP address is assigned to the PowerPC module that is
in the RateMux. The IP address given is in the network 10.0.0.0. Your web
browser uses this pre-assigned IP address to communicate exclusively with the
Cisco 6920. This IP address is printed on a label on the Cisco 6920.
Note: For versions 2.3 and later, the RateMux comes with the default IP
address of 10.0.0.200.
Sometimes the Cisco 6920 does not have the IP address label. To
determine the IP address follow the procedure below:
Follow the steps on the HyperTerminal
procedure to connect to the RateMux.
Once the connection is established, the IP address appears on the
second line of the output. In the example showed on Figure
4, the IP address is 10.0.0.178.
Most of the time it is desirable to be able to access the RateMux
remotely. However, the predefined address may not be on your network scheme.
The IP address usually appears on the 10.0.0.0 network with a mask of 255.0.0.0
and gateway 10.0.0.1. Having a mask of 255.255.255.0 and gateway of 10.0.0.6 is
In this case, changing the IP address of the PowerPC card is desirable.
This can be done via HyperTerminal or connect.exe. However, using the
HyperTerminal is recommend. Notice that, when using connect.exe, you have to
first set the TCP/IP settings on your PC to be on the same subnet as the
RateMux. When changing this IP address, you will need to set the TCP/IP
settings on your PC once more to get connection.
Connect to the RateMux using the HyperTerminal
Once you have the connection established, you will get a menu
similar to the one in Figure 4. From the menu choose
the following sequence of three options:
Select C: Environment Parameters And FLASH
Select B: Environment Configuration.
Select B: Change Environment Parameters
After this, you are prompted to enter several different parameters.
You only need to change one of the following:
For the other parameters, hit ENTER. In this
example you change:
GATEWAY to 172.22.86.1
NETMASK to 255.255.254.0
IPADDR to 172.22.87.6
Type S: Save Environment Parameters to FLASH to
save the configuration.
Type A: List Environment Parameters to view the
current configuration used to view the settings on the RateMux.