Configuring the PA-4B-U Interfaces
To continue your PA-4B-U port adapter installation, you must configure the PA-4B-U interfaces. The instructions that follow apply to all supported platforms. Minor differences between the platforms are noted.
This chapter contains the following sections:
•
Using the EXEC Command Interpreter
Using the EXEC Command Interpreter
You can 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 to 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:
Step 1 At the user-level EXEC prompt, enter the enable command. The EXEC prompts you for a privileged-level passwords:
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-mode system prompt (#):
Router#
Configuring the Interfaces
After you verify that the new PA-4B-U is installed correctly (the enabled LED goes on), use the configure command to configure the new interfaces. Have the following information available:
•Protocols and encapsulations you plan to use on the new interfaces
•Protocol specific information, such as IP addresses if you will configure the interfaces for IP routing
•The ISDN switch type (Table 4-1 lists ISDN service provider switch types)
Note Cisco 7200 series routers do not support a combination of installed ISDN PRI and ISDN BRI interfaces. The ISDN switch type (PRI or BRI) that you identify during an ISDN configuration is for all ISDN interface ports installed in the router.
If you installed a new PA-4B-U or if you want to change the configuration of an existing interface, you must use the privileged-level configure command. If you replaced a PA-4B-U that was previously configured, the system will recognize the new PA-4B-U interfaces and bring each of them up in their existing configurations.
For complete descriptions of interface subcommands and the configuration options available for configuring interfaces on a port adapter, refer to the appropriate configuration publications listed in the section
Note Configuration commands are executed from the privileged level of the EXEC command interpreter, which usually requires password access. See the "Using the EXEC Command Interpreter" section and contact your system administrator, if necessary, to obtain access.
This section contains the following configuration subsections for the standard configurations tasks:
•Performing a Basic Interface Configuration
Shutting Down an Interface
Before you replace an interface cable, replace port adapters, or remove an interface that you will not replace, use the shutdown command to shut down (disable) the interfaces. Doing so prevents anomalies from occurring when you reinstall the new or reconfigured port adapters. 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 1 Enter the privileged level of the EXEC command interpreter. (See the "Using the EXEC Command Interpreter" section for instructions.)
Step 2 At the privileged-level prompt, enter configuration mode and specify that the console terminal will be 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 Specify the slot/port address of the controller that you want shut down by entering the subcommand interface, followed by the type (bri) and port adapter slot number/interface port number. The example that follows is for a PA-4B-U in port adapter slot 1:
Router(config)# interface bri 1/0
Step 4 Enter the shutdown command as follows:
Router(config-cont)# shutdown
Step 5 To shut down additional existing interfaces, enter the port adapter slot number/interface port number of each interface followed by the shutdown command. When you have entered all the interfaces to be shut down, press Ctrl-Z (hold down the Control key while you press Z) or enter end to exit configuration mode and return to the EXEC command interpreter prompt as follows:
Router(config)# interface bri 1/0
Router(config-int)# shutdown
Ctrl-Z
Router#
Step 6 Write the new configuration to memory as follows:
Router# copy running-config startup-config
[OK]
Router#
The system displays an OK message when the configuration has been stored.
Step 7 To verify that new interfaces are now in the correct state (shutdown), use the show interfaces bri port adapter slot number/interface port number command to display the specific interface, or use the show interfaces command, without variables, to display the status of all interfaces in the system.
Router# show interfaces bri 1/0
bri1/0 is down, line protocol is down
Hardware is BRI
[display text omitted]
Step 8 To re-enable the interfaces, repeat the previous steps, but use the no shutdown command; then write the new configuration to memory as follows:
Router(config)# interface bri 1/0
Router(config-int)# no shutdown
Ctrl-Z
Router#
Router# copy running-config startup-config
[OK]
Router# show interfaces bri 1/0
bri1/0 is up, line protocol is up
Hardware is BRI
[display text omitted]
For complete descriptions of software configuration commands, refer to the publications listed in the
Performing a Basic Interface Configuration
Following are instructions for a basic configuration, which include enabling a controller 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, refer to the publications listed in the
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>
Note Cisco 7200 series routers identify PA-4B-U interfaces by port adapter slot number and interface port number (0 through 3). For example, the address of the PA-4B-U installed in port adapter slot 4 and interface port 1 would be bri 4/1.
Step 1 At the privileged-level prompt, enter configuration mode and specify that the console terminal will be the source of the configuration subcommands as follows:
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
Note The ISDN switch type that you identify is for all BRI interface ports installed in a Cisco 7200 series router.
Step 3 At the prompt, specify the first interface to configure by entering the subcommand interface, followed by the type (bri), and port adapter slot number/interface port number. The example that follows is for the PA-4B-U in port adapter slot 1, interface port 1:
Router(config)# interface bri 1/1
Step 4 At the prompt, assign an IP address and subnet mask to the interface with the ip address configuration subcommand as in the following example:
Router(config-int)# ip address 10.10.10.1 255.255.255.0
Router(config-int)#
Step 5 Add any additional configuration subcommands required to enable routing protocols and adjust the interface characteristics.
Step 6 Use the no shutdown command to re-enable the interfaces. See the "Shutting Down an Interface" section for no shutdown command examples.
Step 7 After including all of the configuration subcommands, to complete the configuration, enter Ctrl-Z (hold down the Control key while you press Z) or enter end to exit configuration mode.
Step 8 Write the new configuration to memory as follows:
Router# copy running-config startup-config
The system displays an OK message when the configuration is stored.
Step 9 Exit the privileged level and return to the user level by entering disable at the prompt as follows:
Router# disable
Router>
This completes the procedure for creating a basic configuration. Proceed to the next section to check the interface configuration using show commands. For additional information about configuring ISDN BRI interfaces, refer to the Wide-Area Networking Configuration Guide and Wide-Area Networking Command Reference on Cisco.com.
Checking the 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 command to check connectivity. This section includes the following subsections:
•Using show Commands to Verify the New Interface Status
•Using the ping Command to Verify Network Connectivity
Using show Commands to Verify the New Interface Status
The following procedure demonstrates how you can use the show commands to verify that new interfaces are configured and operating correctly and that the port adapter 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
Note The outputs that appear in this document may not match the output you receive when running these commands. The outputs in this document are examples only.
Take the following steps to verify that the new interfaces are configured and operating correctly:
Step 1 Display the system hardware configuration with the show version command. Ensure that the list includes the new BRI interfaces.
Step 2 Specify one of the new BRI interfaces with the show interfaces type port adapter slot/interface port number command and verify that the first line of the display specifies the interface with the correct slot number. Also verify that the interface and line protocol are in the correct state: up or down.
Step 3 Display all ISDN interfaces installed in the router and the ISDN switch type for the interfaces with the show isdn status command. Ensure that the correct ISDN switch type is displayed for the installed ISDN interfaces.
Step 4 Display the protocols configured for the entire system and specific interfaces with the show protocols command. If necessary, return to configuration mode to add or remove protocol routing on the system or specific interfaces.
Step 5 Display the running configuration file with the show running-config command. Display the configuration stored in NVRAM using the show startup-config command. Verify that the configuration is accurate for the system and each interface.
If the interface is down and you configured it as up, or if the displays indicate that the hardware is not functioning properly, ensure that the network interface is properly connected and terminated. If you still have problems bringing up the interface, contact a customer service representative for assistance.
This section includes the following subsections:
•Using the show version or show hardware Commands
•Using the show interfaces Command
•Using the show isdn status Command
For command descriptions and examples for the individual router platforms, refer to the publications listed in the
Using the show version or show hardware 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.
Note The outputs that appear in this document may not match the output you receive when running these commands. The outputs in this document are examples only.
Cisco 7200 Series Routers and Cisco 7200 VXR Routers—Example Output of the show version Command
Following is an example of the show version command from a Cisco 7200 series router:
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.
4 ISDN Basic Rate interfaces.
1 Compression port adapter.
Integrated NT1s for 4 ISDN Basic Rate interfaces
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
Using the show diag Command
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.
Note The outputs that appear in this document may not match the output you receive when running these commands. The outputs in this document are examples only.
Cisco 7200 Series Routers and Cisco 7200 VXR Routers—Example Output of the show diag Command
Following is an example of a show diag command from a Cisco 7200 series router with a PA-4B-U installed in port adapter slot 1:
Router# show diag 1
Slot 1:
BRI (U) port adapter, 4 ports
Port adapter is analyzed
Port adapter insertion time 02:42:18 ago
Hardware revision 1.0 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 22 01 00 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
Using the show interfaces Command
Display status information (including the physical slot and interface address) for the interfaces you specify using the show interfaces command.
For complete descriptions of interface subcommands and the configuration options available for individual interfaces, refer to the publications listed in the
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.
Cisco 7200 Series Routers and Cisco 7200 VXR Routers—Example Output of the show interfaces Command
Following is an example of the show interfaces bri command from a Cisco 7200 series router that shows all of the information specific to the first PA-4B-U interface port (interface port 0) 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 show isdn status Command
Display all the ISDN interfaces installed in the router and the ISDN switch type for the interfaces using the show isdn status command.
Cisco 7200 Series Routers and Cisco 7200 VXR Routers—Example Output of the show isdn status Command
Following is an example of a show isdn status command from a Cisco 7200 series router with a PA-4B-U installed in port adapter slot 1 and an 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.)
Using the ping Command to Verify Network Connectivity
Use the ping command to verify that an interface port is functioning properly after the system has booted successfully and is operational.
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 command 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 that the connection failed.
Following is an example of a successful ping command to a remote server with the address 10.10.10.1:
Router# ping 10.10.10.1 <Return>
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echoes to 10.10.10.1, 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.
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