Cable Video

How to Retrieve and Change the IP Address from the RateMux C6920

Document ID: 15981

Updated: Oct 04, 2005



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 Data Sheet - Cisco 6920 RateMUX Advanced MPEG-2 Multiplexer.

Note: After Cisco RateMux version 2.3, the 6920 comes with a fixed IP address of 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.

Before You Begin


For more information on document conventions, see the Cisco Technical Tips Conventions.


Readers of this document should be knowledgeable of the following:

  • Digital programming

  • Satellite receivers

  • Encoders

  • MPEG-2 transport

  • Quadrature Amplitude Modulation (QAM)

  • Digital Headend Interface (DHEI)

  • Digital Video Broadcasting-Asynchronous Serial Interface (DVB-ASI) standards

  • Selective bit rate reduction

Components Used

The information in this document is based on the software and hardware versions below.

  • 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 it.

How to Connect to the RateMux

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 Digital Video

The following two sections describe how to connect to the RateMux using both the HyperTerminal and the connect.exe program.

Connection Procedure Using HyperTerminal

Follow the instructions provided below to connect to the RateMux using HyperTerminal:

  1. 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

  2. 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 RateMux

  3. Turn the RateMux power OFF.

  4. Launch HyperTerminal.

  5. Select Call from the HyperTerminal Menu bar.

  6. Power on the RateMux.

  7. Within 10 seconds of turning on the RateMux, select Connect from the HyperTerminal Call menu.

  8. Click the mouse cursor on the open window in the HyperTerminal screen.

  9. 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

Connection Procedure Using the connect.exe Program

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 connect.exe program

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:

  • Make sure that the IP addresses of the PC and the RateMux are on the same subnet.

  • Make sure you have the correct gateway defined on your PC.

You can change the TCP/IP properties of your PC to accomplish this.

Once physically connected, use the following steps to establish communications.

  1. Power the RateMux OFF.

  2. Start the connect.exe program by double-clicking on the icon. ratemux_change_ip6.gif

  3. Click Connection.

  4. Click Connect under the Connection Menu, enter the IP address of the RateMux, and click OK.

  5. Power ON the RateMux.

  6. 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 established.


    Figure 6: Connect.exe window after the connection to the RateMux has been established

How to Retrieve the IP Address from the RateMux

Usually, a unique IP address is assigned to the PowerPC module that is in the RateMux. The IP address given is in the network 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

Sometimes the Cisco 6920 does not have the IP address label. To determine the IP address follow the procedure below:

  1. Follow the steps on the HyperTerminal procedure to connect to the RateMux.

  2. 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

How to Change the IP Address on the Power PC Card of the RateMux

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 network with a mask of and gateway Having a mask of and gateway of is also common.

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.

  1. Connect to the RateMux using the HyperTerminal procedure.

  2. 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:

    1. Select C: Environment Parameters And FLASH Partitions.

    2. Select B: Environment Configuration.

    3. Select B: Change Environment Parameters .

  3. After this, you are prompted to enter several different parameters. You only need to change one of the following:



    • IPADDR

    For the other parameters, hit ENTER. In this example you change:

    • GATEWAY to

    • NETMASK to

    • IPADDR to

  4. Type S: Save Environment Parameters to FLASH to save the configuration.

  5. Type A: List Environment Parameters to view the current configuration used to view the settings on the RateMux.

Related Information

Updated: Oct 04, 2005
Document ID: 15981