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This chapter describes how to configure the data interfaces at the Cisco IOS CLI:
Follow the procedures in this chapter to manually configure the Access Gateway module. You can also change the setup command facility configuration (described in Chapter 3).
The chapter describes only a small portion of the most commonly used configuration procedures. For advanced configuration topics, refer to the Cisco IOS Configuration Guide and Command Reference publications. These publications are available on the Documentation CD-ROM or the CCO. You can also order printed copies separately.
One of the first configuration tasks you might want to do is configure the host name and set an encrypted password. Configuring a host name allows you to distinguish multiple Access Gateway modules. Setting an encrypted password allows you to prevent unauthorized configuration changes.
To configure the host name and password, perform these tasks:
To verify that you configured the correct host name and password, follow these steps:
gwy1# show config Using 1888 out of 126968 bytes ! version XX.X . . . ! hostname gwy1 ! enable secret 5 $1$60L4$X2JYOwoDc0.kqa1loO/w8/ . . .
Check the host name and encrypted password displayed near the top of the command output.
Step 2 Exit global configuration mode and attempt to reenter it using the new enable password:
gwy1# exit . . . gwy1 con0 is now available Press RETURN to get started. gwy1> enable Password: guessme gwy1#
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Tips If you are having trouble, check that Caps Lock is off; passwords are case sensitive. |
To configure the Fast Ethernet interface, use the configuration software (setup command facility) provided with your Access Gateway module. Otherwise, you can use configuration mode (manual configuration). In this mode, you enter Cisco IOS commands at the Access Gateway module prompt.
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Note Before you begin, disconnect all WAN cables from the Access Gateway module to keep it from trying to run the AutoInstall process. The Access Gateway module tries to run AutoInstall whenever you bring it online if there is a WAN connection on both ends and the Access Gateway module does not have a valid configuration file stored in NVRAM (for instance, when you add a new interface). The Access Gateway module can take several minutes to determine that AutoInstall is not connected to a remote TCP/IP host. |
To configure the Fast Ethernet interface, perform these tasks:
| Command | Purpose | |
|---|---|---|
Step 1 | | Enter enable mode. Enter the password. You have entered enable mode when the prompt changes to |
Step 2 | | Enter global configuration mode. You have entered global configuration mode when the prompt changes to |
Step 3 | | Enable routing protocols as required for your global configuration. |
Step 4 | | Enter interface configuration mode.
You have entered interface configuration mode when the prompt changes to |
Step 5 | | Assign an IP address and subnet mask to the interface. |
Step 6 |
| Exit back to global configuration mode. Repeat Step 4 through Step 6 if your Access Gateway module has more than one interface that you need to configure. |
Step 7 | | When you finish configuring interfaces, return to enable mode. |
Step 8 | | Enter enable mode. Enter the password. You have entered enable mode when the prompt changes to |
You can manually configure the serial interfaces on your asynchronous/synchronous serial network module or WIC by entering Cisco IOS commands on the command line. This method, called configuration mode, provides the greatest flexibility.
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Note The asynchronous/synchronous serial network modules and WICs support synchronous mode only. Asynchronous mode is not supported at this point. |
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TimeSaver Before you begin, disconnect all WAN cables from the Access Gateway module to keep it from trying to run the AutoInstall process. The Access Gateway module tries to run AutoInstall whenever you bring the module online if there is a WAN connection on both ends and the Access Gateway module does not have a valid configuration file stored in nonvolatile random-access memory (NVRAM) (for instance, when you add a new interface). The Access Gateway module can take several minutes to determine that AutoInstall is not connected to a remote TCP/IP host. |
To configure the serial interfaces, perform these tasks:
| Command | Purpose | |
|---|---|---|
Step 1 | | Enter enable mode. Enter the password. You have entered enable mode when the prompt changes to |
Step 2 | | Enter global configuration mode.
You have entered global configuration mode when the prompt changes to |
Step 3 | | Enable routing protocols as required for your global configuration. |
Step 4 | | Enter the interface configuration mode. |
Step 5 | | Assign the IP address and subnet mask to the interface. |
Step 6 |
| All serial ports are initially configured as synchronous. |
Step 7 | | To use a port in DCE mode, connect a DCE cable and set the internal transmit clock signal (TXC) speed in bits per second. (For ports used in DTE mode, the Access Gateway module automatically uses the external timing signal.) |
Step 8 |
| When a port is operating in DCE mode, the default operation is for the DCE to send serial clock transmit (SCT) and serial clock receive (SCR) clock signals to the DTE, and for the DTE to return an SCTE signal to the DCE. If the DTE does not return an SCTE signal, enter this command to configure the DCE port to use its own clock signal. |
Step 9 |
| Access Gateway modules that use long cables might experience high error rates when operating at higher transmission speeds, because the clock and data signals can shift out of phase. If a DCE port is reporting a high number of error packets, inverting the clock using this command can often correct the shift. |
Step 10 |
| All serial interfaces support both nonreturn to zero (NRZ) and nonreturn to zero inverted (NRZI) formats. NRZ is the default; NRZI is commonly used with EIA/TIA-232 connections in IBM environments. To enable NRZI encoding on an interface, enter this command. |
Step 11 |
| Exit back to global configuration mode. Repeat Step 4 through Step 14 if your Access Gateway module has more that one serial interface that you need to configure. |
Step 12 | | When you finish configuring interface, return to enable mode. |
Step 13 | | Enter enable mode. Enter the password. You have entered enable mode when the prompt changes to |
Step 14 | | Enter global configuration mode.
You have entered global configuration mode when the prompt changes to |
Table 5-1 lists the half-duplex timer commands.
| Timer | Syntax | Default Setting (Milliseconds) |
|---|---|---|
CTS delay1 | half-duplex timer cts-delay | 100 |
CTS drop timeout | half-duplex timer cts-drop-timeout | 5000 |
DCD drop delay | half-duplex timer dcd-drop-delay | 100 |
DCD transmission start delay | half-duplex timer dcd-txstart-delay | 100 |
RTS2 drop delay | half-duplex timer rts-drop-delay | 100 |
RTS timeout | half-duplex timer rts-timeout | 2000 |
Transmit delay | half-duplex timer transmit-delay | 0 |
| 1CTS = Clear To Send. 2RTS = Request To Send. |
The following clock rate settings are for 2-port asynchronous/synchronous serial WICs:
You can manually configure the interfaces on your BRI interface card by using the configuration mode.
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TimeSaver Before you begin, disconnect all WAN cables from the Access Gateway module to keep it from trying to run the AutoInstall process. The Access Gateway module tries to run AutoInstall whenever you bring it online, if there is a WAN connection on both ends and the Access Gateway module does not have a valid configuration file stored in nonvolatile random-access memory (NVRAM) (for instance, when you add a new interface). The Access Gateway module can take several minutes to determine that AutoInstall is not connected to a remote TCP/IP host. |
To configure ISDN BRI interfaces, perform these tasks:
| Command | Purpose | |||
|---|---|---|---|---|
Step 1 | | Enter enable mode. Enter the password. You have entered enable mode when the prompt changes to | ||
Step 2 | | Enter global configuration mode.
You have entered global configuration mode when the prompt changes to | ||
Step 3 |
| Enter an ISDN switch type. See Table 5-2 for a list of ISDN switch types.
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Step 4 | | Enable routing protocols as required for your global configuration. | ||
Step 5 | | Enter the interface configuration mode.
You have entered interface configuration mode when the prompt changes to | ||
Step 6 | | Assign the IP address and subnet mask to the interface. If you are configuring this interface for voice, enter the switch type instead of an IP address. | ||
Step 7 |
| Exit back to global configuration mode. Repeat Step 5 through Step 7 if your Access Gateway module has more than one BRI interface that you need to configure. | ||
Step 8 | | By default, the Access Gateway module allocates 25 percent of DRAM to shared memory (used for data transmitted or received by network modules and WAN interface cards). This example increases shared memory from 25 percent to | ||
Step 9 | | When you finish configuring the interface, return to enable mode. |
Table 5-2 lists the supported ISDN switch types by country.
| Country | ISDN Switch Type | Descriptoin |
|---|---|---|
Australia | basic-ts013 | Australian TS013 switches |
Europe | basic-1tr6 | German 1TR6 ISDN switches |
| basic-nwnet3 | Norwegian NET3 ISDN switches (phase 1) |
| basic-net3 | NET3 ISDN switches (UK and others) |
| vn2 | French VN2 ISDN switches |
| vn3 | French VN3 ISDN switches |
Japan | ntt | Japanese NTT ISDN switches |
New Zealand | basic-nznet3 | New Zealand NET3 switches |
North America | basic-5ess | AT&T basic rate switches |
basic-dms100 | NT DMS-100 basic rate switches | |
basic-nil1 | National ISDN-1 switches |
Before using a Access Gateway module with an ISDN BRI interface, you must order a correctly configured ISDN BRI line from your local telecommunications service provider.
ISDN BRI provisioning refers to the types of services provided by the ISDN BRI line. Although provisioning is performed by your ISDN BRI service provider, you must tell the provider what you want.
To configure a T1/E1 multiflex trunk interface, use the configuration software provided with your Access Gateway module, if any. Otherwise, for greatest flexibility use configuration mode (manual configuration). In this mode, you enter Cisco IOS commands at the Access Gateway module prompt.
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TimeSaver Before you begin, disconnect all WAN cables from the Access Gateway module to keep it from trying to run the AutoInstall process. The Access Gateway module tries to run AutoInstall whenever you bring it online if there is a WAN connection on both ends and the Access Gateway module does not have a valid configuration file stored in NVRAM (for instance, when you add a new interface). The Access Gateway module can take several minutes to determine that AutoInstall is not connected to a remote TCP/IP host. |
This section describes basic configuration, including enabling the interface and specifying IP routing. Depending on your own requirements and the protocols you plan to route, you might also need to enter other configuration commands.
To configure a new T1, CT1/PRI or CT1/PRI-CSU interface or to change the configuration of an existing interface, perform these tasks:
| Command | Purpose | |
|---|---|---|
Step 1 | | Enter enable mode. Enter the password. You have entered enable mode when the prompt changes to |
Step 2 | | Enter global configuration mode.
You have entered global configuration mode when the prompt changes to |
Step 3 | | Enable routing protocols as required for your global configuration. |
Step 4 | | Select the CT1/PRI interface to configure. This example configures a T1 interface in slot 1 and unit 0. |
Step 5 | gateway(config-controller)# clock source line | Specify which end of the circuit provides clocking. The clock source should be set to use internal clocking only for testing the network or if the full T1 line is used as the channel group. Only one end of the T1 line should be set to internal. |
Step 6 | gateway(config-controller)# framing esf | Specify the framing type. |
Step 7 | gateway(config-controller)# linecode b8zs | Specify the line code format. |
Step 8 | gateway(config-controller)# channel-group 0 timeslots 1,3-5,7 | Specify the channel group and time slots to be mapped. |
Step 9 | gateway(config-controller)# interface serial 1/0:0 | Configure each channel group as a virtual serial interface. Specify the T1 interface, unit number, and channel group to modify. |
Step 10 | | Assign an IP address and subnet mask to the interface. |
Step 11 | | Exit back to global configuration mode. Return to Step 4 if your Access Gateway module has more than one CT1/PRI interface that you need to configure. |
Step 12 | | When you finish configuring interfaces, return to enable mode. |
To configure a new E1 interface (balanced or unbalanced) or to change the configuration of an existing interface, perform these tasks:
| Command | Purpose | |
|---|---|---|
Step 1 | | Enter enable mode. Enter the password. You have entered enable mode when the prompt changes to |
Step 2 | | Enter global configuration mode.
You have entered global configuration mode when the prompt changes to |
Step 3 | | Enable routing protocols as required for your global configuration. |
Step 4 | | Select the CE1/PRI interface to configure. This example configures an E1 interface in slot 1 and unit 0. |
Step 5 | gateway(config-controller)# framing crc4 | Specify the framing type. |
Step 6 | gateway(config-controller)# linecode hdb3 | Specify the line code format. |
Step 7 | gateway(config-controller)# channel-group 0 timeslots 1,3-5,7 | Specify the channel group and time slots to be mapped. |
Step 8 | gateway(config-controller)# interface serial 1/0:0 | Configure each channel group as a virtual serial interface. Specify the E1 interface, unit number, and channel group to modify. |
Step 9 | | Assign an IP address and subnet mask to the interface. |
Step 10 | | Exit back to global configuration mode. Return to Step 4 if your Access Gateway module has more than one CE1/PRI interface that you need to configure. |
Step 11 | | When you finish configuring interfaces, return to enable mode. |
Step 12 | | Enter enable mode. Enter the password. You have entered enable mode when the prompt changes to |
After configuring the new interface, you can perform the following tests to verify that the new interface is operating correctly:
If an interface is down and you configured it as up, or if the displays indicate that the hardware is not functioning properly, make sure that the new interface is properly connected and configured.
To prevent the loss of the Access Gateway module configuration, you need to save it to NVRAM.
To save configuration changes, perform these tasks:
| Step | Command | Purpose |
|---|---|---|
| 1 | | Enter enable mode. Enter the password. You have entered enable mode when the prompt changes to |
| 2 | | Save the configuration changes to NVRAM so that they are not lost during resets, power cycles, or power outages. |
| 3 | | Return to enable mode. This message is normal and does not indicate an error. |
Posted: Thu Sep 14 18:37:06 PDT 2000
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