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To continue your PA-8B-ST installation, you must configure the BRI interfaces. The instructions that follow apply to all supported platforms. Minor differences between the platforms—with Cisco IOS software commands—are noted.
This chapter contains the following sections:
You modify the configuration of your router through the software command interpreter called the EXEC (also called enable mode). You must enter the privileged level of the EXEC command interpreter with the enable command before you can use the configure command to configure a new interface or change the existing configuration of an interface. The system prompts you for a password if one has been set.
The system prompt for the privileged level ends with a pound sign (#) instead of an angle bracket (>). At the console terminal, use the following procedure to enter the privileged level:
Router> enable
Password:
Step 2 Enter the password (the password is case sensitive). For security purposes, the password is not displayed.
When you enter the correct password, the system displays the privileged-level system prompt (#):
Router#
To configure the new interfaces, proceed to the "Configuring the Interfaces" section.
After you verify that the new PA-8B-ST is installed correctly (the enabled LED goes on), use the privileged-level configure command to configure the new interfaces. Have the following information available:
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Note Configuration commands are executed from the privileged level of the EXEC command interpreter, which usually requires password access. Contact your system administrator, if necessary, to obtain access.
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If you installed a new PA-8B-ST or if you want to change the configuration of an existing interface, you must enter configuration mode to configure the new interfaces. If you replaced a PA-8B-ST that was previously configured, the system recognizes the new interfaces and brings each of them up in their existing configuration.
For a summary of the configuration options available and instructions for configuring interfaces on a PA-8B-ST, refer to the appropriate configuration publications listed in the "Related Documentation" section.
You execute configuration commands from the privileged level of the EXEC command interpreter, which usually requires password access. Contact your system administrator, if necessary, to obtain password access. (See the "Using the EXEC Command Interpreter" section for an explanation of the privileged level of the EXEC.)
This section contains the following subsections:
Before you remove an interface that you will not replace, or replace port adapters, use the shutdown command to shut down (disable) the interfaces to prevent anomalies when you reinstall the new or reconfigured
port adapter. When you shut down an interface, it is designated administratively down in the show command displays.
Follow these steps to shut down an interface:
Step 2 At the privileged-level prompt, enter configuration mode and specify that the console terminal is the source of the configuration subcommands, as follows:
Router# configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#
Step 3 Shut down interfaces by entering the interface bri subcommand (followed by the interface address of the interface), and then enter the shutdown command. Table 4-2 shows the command syntax.
When you have finished, press Ctrl-Z—hold down the Control key while you press Z—or enter end or exit to exit configuration mode and return to the EXEC command interpreter.
| Platform | Command | Example |
|---|---|---|
Cisco 7120 series routers | interface, followed by the type (bri) and slot/port (port-adapter-slot-number/ | The example is for interface 0 and interface 1 on a port adapter in port adapter slot 3. Router(config-if)# interface bri 3/0 Router(config-if)# shutdown Router(config-if)# interface bri 3/1 Router(config-if)# shutdown Ctrl-Z Router# |
Cisco 7140 series routers | interface, followed by the type (bri) and slot/port (port-adapter-slot-number/ | The example is for interface 0 and interface 1 on a port adapter in port adapter slot 4. Router(config-if)# interface bri 4/0 Router(config-if)# shutdown Router(config-if)# interface bri 4/1 Router(config-if)# shutdown Ctrl-Z Router# |
Cisco 7200 series routers | interface, followed by the type (bri) and slot/port (port-adapter-slot-number/ | The example is for interface 0 and interface 1 on a port adapter in port adapter slot 6. Router(config-if)# interface bri 6/0 Router(config-if)# shutdown Router(config-if)# interface bri 6/1 Router(config-if)# shutdown Ctrl-Z Router# |
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Note If you need to shut down additional interfaces, enter the interface bri command (followed by the interface address of the interface) for each of the interfaces on your port adapter. Use the no shutdown command to enable the interface. |
Step 4 Write the new configuration to NVRAM as follows:
Router# copy running-config startup-config [OK] Router#
The system displays an OK message when the configuration has been stored in NVRAM.
Step 5 Verify that new interfaces are now in the correct state (shut down) using the
show interfaces command (followed by the interface type and interface address of the interface) to display the specific interface. Table 4-3 provides examples.
| Platform | Command | Example |
|---|---|---|
Cisco 7120 series routers | show interfaces bri, followed by slot/port (port-adapter-slot-number/ | The example is for interface 0 on a port adapter in port adapter slot 3. Router# show interfaces bri 3/0 BRI 3/0 is administratively down, line protocol is down [Additional display text omitted from this example] |
Cisco 7140 series routers | show interfaces bri, followed by slot/port (port-adapter-slot-number/ | The example is for interface 0 on a port adapter in port adapter slot 4. Router# show interfaces bri 4/0 BRI 4/0 is administratively down, line protocol is down [Additional display text omitted from this example] |
Cisco 7200 series routers | show interfaces bri, followed by slot/port (port-adapter-slot-number/ | The example is for interface 0 on a port adapter in port adapter slot 6. Router# show interfaces bri 6/0 BRI 6/0 is administratively down, line protocol is down [Additional display text omitted from this example] |
Step 6 Reenable interfaces by doing the following:
a. Repeat Step 3 to reenable an interface. Substitute the no shutdown command for the shutdown command.
b. Repeat Step 4 to write the new configuration to memory. Use the
copy running-config startup-config command.
c. Repeat Step 5 to verify that the interfaces are in the correct state. Use the
show interfaces command followed by the interface type and interface address of the interface.
For complete descriptions of software configuration commands, refer to the publications listed in the "Related Documentation" section.
Following are instructions for a basic configuration: enabling an interface and specifying IP routing. You might also need to enter other configuration subcommands, depending on the requirements for your system configuration and the protocols you plan to route on the interface. For complete descriptions of configuration subcommands and the configuration options available for BRI interfaces, refer to the appropriate software documentation.
In the following procedure, press the Return key after each step unless otherwise noted. At any time you can exit the privileged level and return to the user level by entering disable at the prompt as follows:
Router# disable Router>
Router# configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#
Step 2 Identify the ISDN switch type. In the following example, the switch basic-net3 (a switch for the European Union) is identified as the switch type:
Router(config)# isdn switch-type basic-net3
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Note The ISDN switch type that you identify is for all ISDN interface ports installed in the router. |
Step 3 Specify the first interface to configure by entering the interface bri subcommand, followed by the interface address of the interface you plan to configure. Table 4-4 provides examples.
| Platform | Command | Example |
|---|---|---|
Cisco 7120 series routers | interface bri, followed by slot/port (port-adapter-slot-number/ | The example is for the first interface of a Router(config)# interface bri 3/0 Router(config-if)# |
Cisco 7140 series routers | interface bri, followed by slot/port (port-adapter-slot-number/ | The example is for the first interface of a Router(config)# interface bri 4/0 Router(config-if)# |
Cisco 7200 series routers | interface bri, followed by slot/port (port-adapter-slot-number/ | The example is for the first interface of a Router(config)# interface bri 6/0 Router(config-if)# |
Step 4 Assign an IP address and subnet mask to the interface (if IP routing is enabled on the system) by using the ip address subcommand, as in the following example:
Router(config-if)# ip address 10.0.0.0 10.255.255.255
Step 5 Add any additional configuration subcommands required to enable routing protocols and set the interface characteristics.
Step 6 Reenable the interfaces using the no shutdown command. (See the "Shutting Down an Interface" section.)
Step 7 Configure all additional port adapter interfaces as required.
Step 8 After including all of the configuration subcommands to complete your configuration, press Ctrl-Z—hold down the Control key while you press Z—or enter end or exit to exit configuration mode and return to the EXEC command interpreter prompt.
Step 9 Write the new configuration to NVRAM as follows:
Router# copy running-config startup-config [OK] Router#
This completes the procedure for creating a basic configuration.
After configuring the new interface, use the show commands to display the status of the new interface or all interfaces, and use the ping and loopback commands to check connectivity. This section includes the following subsections:
Table 4-5 demonstrates how you can use the show commands to verify that new interfaces are configured and operating correctly and that the PA-8B-ST appears in them correctly. Sample displays of the output of selected show commands appear in the sections that follow. For complete command descriptions and examples, refer to the publications listed in the "Related Documentation" section.
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Note The ouputs that appear in this document may not match the output you receive when running these commands. The outputs in this document are examples only. |
| Command | Function | Example |
|---|---|---|
show version or | Displays system hardware configuration, the number of each interface type installed, Cisco IOS software version, names and sources of configuration files, and boot images | Router# show version |
show controllers | Displays all the current interface processors and their interfaces | Router# show controllers |
show diag slot | Displays types of port adapters installed in your system and information about a specific port adapter slot, interface processor slot, or chassis slot | Router# show diag 2 |
show interfaces type 3/interface-port- | Displays status information about a specific type of interface (for example, BRI) in a Cisco 7120 series router | Router# show interfaces bri 3/1 |
show interfaces type 4/interface-port- | Displays status information about a specific type of interface (for example, BRI) in a Cisco 7140 series router | Router# show interfaces bri 4/1 |
show interfaces type port-adapter-slot-number/ | Displays status information about a specific type of interface (for example, BRI) in a Cisco 7200 series router | Router# show interfaces bri 1/0 |
show isdn status | Displays the status of all ISDN interfaces, including ISDN switch type | Router# show isdn status |
show protocols | Displays protocols configured for the entire system and for specific interfaces | Router# show protocols |
show running-config | Displays the running configuration file | Router# show running-config |
show startup-config | Displays the configuration stored in NVRAM | Router# show startup-config |
If an interface is shut down and you configured it as up, or if the displays indicate that the hardware is not functioning properly, ensure that the interface is properly connected and terminated. If you still have problems bringing up the interface, contact a service representative for assistance. This section includes the following subsections:
Choose the subsection appropriate for your system. Proceed to the "Using the ping Command to Verify Network Connectivity" section when you have finished using the show commands.
Display the configuration of the system hardware, the number of each interface type installed, the Cisco IOS software version, the names and sources of configuration files, and the boot images, using the show version (or show hardware) command.
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Note The ouputs that appear in this document may not match the output you receive when running these commands. The outputs in this document are examples only. |
Following is an example of the show version command from a Cisco 7200 series router with the PA-8B-ST:
Router# show version Cisco Internetwork Operating System Software IOS (tm) 7200 Software (C7200-J-M), Version 11.1(9)CA1 Copyright (c) 1986-1996 by cisco Systems, Inc. Compiled Sun 04-Aug-96 06:00 by rmontino Image text-base: 0x600088A0, data-base: 0x605A4000 ROM: System Bootstrap, Version 11.1(5) RELEASED SOFTWARE ROM: 7200 Software (C7200-BOOT-M), RELEASED SOFTWARE 11.1(9)CA1 Router uptime is 4 hours, 22 minutes System restarted by reload System image file is "c7200-j-mz", booted via slot0 cisco 7206 (NPE150) processor with 12288K/4096K bytes of memory. R4700 processor, Implementation 33, Revision 1.0 (Level 2 Cache) Last reset from power-on Bridging software. X.25 software, Version 2.0, NET2, BFE and GOSIP compliant. Basic Rate ISDN software, version 1.0. Chassis Interface. 12 Ethernet/IEEE 802.3 interfaces. 1 FastEthernet/IEEE 802.3 interface. 8 ISDN Basic Rate interfaces. 1 Compression port adapter. Integrated NT1 for ISDN Basic Rate interface 125K bytes of non-volatile configuration memory. 1024K bytes of packet SRAM memory. 20480K bytes of Flash PCMCIA card at slot 0 (Sector size 128K). 8192K bytes of Flash internal SIMM (Sector size 256K). Configuration register is 0x2
Display all the ISDN interfaces installed in the router and the ISDN switch type for the interfaces, using the show isdn status command. The following example is for a PA-8B-ST in port adapter slot 1, with the ISDN switch type basic-5ess:
Router# show isdn status
The current ISDN Switchtype = basic-5ess
ISDN BRI1/0 interface
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 94, State = MULTIPLE_FRAME_ESTABLISHED
Layer 3 Status:
1 Active Layer 3 Call(s)
Activated dsl 0 CCBs = 1
CCB:callid=8001, sapi=0, ces=1, B-chan=1
ISDN BRI1/1 interface
Layer 1 Status:
DEACTIVATED
Layer 2 Status:
Layer 2 NOT Activated
Layer 3 Status:
No Active Layer 3 Call(s)
Activated dsl 1 CCBs = 0
(Display text omitted.)
Display the types of port adapters installed in your system (and specific information about each) using the show diag slot command, where slot is the port adapter slot in a Cisco 7100 series and Cisco 7200 series router.
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Note The ouputs that appear in this document may not match the output you receive when running these commands. The outputs in this document are examples only. |
Following is an example of the show diag slot command that shows a PA-8B-ST in port adapter slot 1 of a Cisco 7200 series router:
Router# show diag 1
Slot 1:
BRI (S/T) port adapter, 8 ports
Port adapter is analyzed
Port adapter insertion time 04:34:56 ago
Hardware revision 255.255 Board revision UNKNOWN
Serial number 4294967295 Part number 255-65535-255
Test history 0xFF RMA number 255-255-255
EEPROM format version 1
EEPROM contents (hex):
0x20: 01 3E FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x30: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
For complete descriptions of interface subcommands and the configuration options available for Cisco 7100 series and Cisco 7200 series interfaces, refer to the publications listed in the "Related Documentation" section.
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Note The ouputs that appear in this document may not match the output you receive when running these commands. The outputs in this document are examples only. |
Following is an example of the show interfaces bri command, which shows all of the information specific to interface port 0 on a PA-8B-ST installed in port adapter slot 1:
Router# show interfaces bri 1/0
BRI1/0 is administratively down, line protocol is down
Hardware is BRI
MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, loopback not set
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/64/0 (size/threshold/drops)
Conversations 0/0 (active/max active)
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
Using the ping command, you can verify that an interface port is functioning properly. This section provides a brief description of this command. Refer to the publications listed in the "Related Documentation" section for detailed command descriptions and examples.
The ping command sends echo request packets out to a remote device at an IP address that you specify. After sending an echo request, the system waits a specified time for the remote device to reply. Each echo reply is displayed as an exclamation point (!) on the console terminal; each request that is not returned before the specified timeout is displayed as a period (.). A series of exclamation points (!!!!!) indicates a good connection; a series of periods (.....) or the messages [timed out] or [failed] indicate a bad connection.
Following is an example of a successful ping command to a remote server with the address 10.0.0.10:
Router# ping 10.0.0.10 <Return> Type escape sequence to abort. Sending 5, 100-byte ICMP Echoes to 10.0.0.10, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/15/64 ms Router#
If the connection fails, verify that you have the correct IP address for the destination and that the device is active (powered on), and repeat the ping command.
Posted: Fri Aug 25 10:55:10 PDT 2000
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