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To continue your PA-4E1G installation, you need to now configure the serial 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 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:
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-4E1G is installed correctly (the enabled LED goes on), use the privileged-level configure command to configure the new interfaces. Have the following information available:
If you installed a new PA-4E1G 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 an PA-4E1G that was previously configured, the system will recognize the new interfaces and bring them up in their existing configuration.
For a summary of the configuration options available and additional instructions for configuring on the PA-4E1G, 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 interface processor. 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 serial subcommand (followed by the interface address of the interface), and then enter the shutdown command. Table 4-1 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 (serial) 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 serial 3/0 Router(config-if)# shutdown Router(config-if)# interface serial 3/1 Router(config-if)# shutdown Ctrl-Z Router# |
Cisco 7140 series routers
| interface, followed by the type (serial) 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 serial 4/0 Router(config-if)# shutdown Router(config-if)# interface serial 4/1 Router(config-if)# shutdown Ctrl-Z Router# |
Cisco 7200 series routers | interface, followed by the type (serial) 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 serial 6/0 Router(config-if)# shutdown Router(config-if)# interface serial 6/1 Router(config-if)# shutdown Ctrl-Z Router# |
Cisco uBR7223 router | interface, followed by the type (serial) and slot/port (port-adapter-slot-number/ | The example is for interface 0 and interface 1 on a port adapter in port adapter slot 1. Router(config-if)# interface serial 1/0 Router(config-if)# shutdown Router(config-if)# interface serial 1/1 Router(config-if)# shutdown Ctrl-Z Router# |
Cisco uBR7246 router | interface, followed by the type (serial) and slot/port (port-adapter-slot-number/ | The example is for interface 0 and interface 1 on a port adapter in port adapter slot 2. Router(config-if)# interface serial 2/0 Router(config-if)# shutdown Router(config-if)# interface serial 2/1 Router(config-if)# shutdown Ctrl-Z Router# |
VIP2 in Cisco 7000 series or | interface, followed by the type (serial) and slot/port adapter/port (interface-processor-slot-number/ | The example is for interface 0 on a port adapter in Router(config-if)# interface serial 1/1/1 Router(config-if)# shutdown Router(config-if)# interface serial 1/1/0 Router(config-if)# shutdown Ctrl-Z Router# |
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Note If you need to shut down additional interfaces, enter the interface serial 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 4-2 provides examples.
| Platform | Command | Example |
|---|---|---|
Cisco 7120 series routers
| show interfaces serial, 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 serial 3/0 Serial 3/0 is administratively down, line protocol is down [Additional display text omitted from this example] |
Cisco 7140 series routers
| show interfaces serial, 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 serial 4/0 Serial 4/0 is administratively down, line protocol is down [Additional display text omitted from this example] |
Cisco 7200 series routers | show interfaces serial, 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 serial 6/0 Serial 6/0 is administratively down, line protocol is down [Additional display text omitted from this example] |
Cisco uBR7223 router | show interfaces serial, followed by slot/port (port-adapter-slot- number/ | The example is for interface 0 on a port adapter in port adapter slot 1. Router# show interfaces serial 1/0 Serial 1/0 is administratively down, line protocol is down [Additional display text omitted from this example] |
Cisco uBR7246 router | show interfaces serial, followed by slot/port (port-adapter-slot-number/ | The example is for interface 0 on a port adapter in port adapter slot 2. Router# show interfaces serial 2/0 Serial 2/0 is administratively down, line protocol is down [Additional display text omitted from this example]
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VIP2 in Cisco 7000 series or Cisco 7500 series routers | show interfaces serial, followed by slot/port adapter/port (interface-processor-slot-number/ | The example is for interface 0 on a port adapter in port adapter slot 1 of a VIP2 in interface processor slot 1. Router# show interfaces serial 1/1/0 Serial 1/1/0 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 serial 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 Specify the first interface to configure by entering the subcommand interface serial subcommand followed by the interface address of the interface you plan to configure. Table 4-3 gives examples.
| Platform | Command | Example |
|---|---|---|
Cisco 7120 series routers
| interface serial, followed by slot/port (port-adapter-slot-number/ | The example is for the first interface of a Router(config)# interface serial 3/0 Router(config-if)# |
Cisco 7140 series routers
| interface serial, followed by slot/port (port-adapter-slot-number/ | The example is for the first interface of a Router(config)# interface serial 4/0 Router(config-if)# |
Cisco 7200 series routers | interface serial, followed by slot/port (port-adapter-slot-number/ | The example is for the first interface of a Router(config)# interface serial 6/0 Router(config-if)# |
Cisco uBR7223 router | interface serial, followed by slot/port (port-adapter-slot-number/ | The example is for the first interface of a Router(config)# interface serial 1/0 Router(config-if)# |
Cisco uBR7246 router | interface serial, followed by slot/port (port-adapter-slot-number/ | The example is for the first interface of a Router(config)# interface serial 2/0 Router(config-if)# |
VIP2 in Cisco 7000 series or Cisco 7500 series routers | interface serial, followed by slot/port adapter/port (interface-processor-slot-number/ | The example is for the first interface of a Router(config)# interface serial 1/1/0 Router(config-if)# |
Step 3 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 4 Add any additional configuration subcommands required to enable routing protocols and set the interface characteristics.
Step 5 Reenable the interfaces using the no shutdown command. (See the "Shutting Down an Interface" section.)
Step 6 Configure all additional port adapter interfaces as required.
Step 7 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 8 Write the new configuration to nonvolatile memory as follows:
Router# copy running-config startup-config [OK] Router#
This completes the procedure for creating a basic configuration.
Use the privileged-level configure command to perform an advanced interface configuration. You will need the following information to perform this configuration:
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Caution Always issue a clear interface command after altering the configuration of an interface, particularly after changing a time slot or CRC4 setting. |
The PA-4E1G supports both framed (G.704) and unframed (G.703) modes of operation; the default is unframed operation.
To enable framed operation, you must specify the start and stop slots, separated by a hyphen, as follows:
timeslot 0/start-slot-31/stop-slot
Following is an example of using the timeslot command with a start slot of 1 and a stop slot of 13:
Router# timeslot 1-13
Nonconfigurable combinations of start and stop slots will be ignored, and the interface will be left unchanged.
In framed mode, the system default is not to use time slot 16 for data. To use slot 16 for data, use the ts16 command in addition to the timeslot 1-17 command, as follows:
Router# timeslot 1-17 Router# ts16
To restore the system default, use the no ts16 command.
Each PA-E1G operates either with an external clock signal that it recovers from the received data stream or its own internal clock signal. The default is the external clock source line. To specify the clock source, use the clock source {line | internal} command.
To change the default and use the internal clock, use the clock source internal command.
To return the interface to the default state, use the clock source line command. (The no clock source internal command also returns the interface to the default state.)
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Note All E1-G.703/G.704 interfaces operate at a default clock rate of 2.048 Mbps; you cannot configure the clock rate. |
Table 4-4 summarizes cyclic redundancy check (CRC) commands. For more information, see the remainder of this section.
| Purpose | Command | Example | Further Information |
|---|---|---|---|
Enable 4-bit CRC. | crc 4 | The example enables 4-bit CRC on a serial interface: Router(config)# interface serial 3/0 Router(config-if)# crc 4 | |
Return to default, CRC disabled. | no crc 4 | The example disables 4-bit CRC on a serial interface and returns to the default, CRC disabled: Router(config)# interface serial 3/0 Router(config-if)# no crc 4 |
The 4-bit cyclic redundancy check (CRC4) is an error checking technique that uses a calculated numeric value to detect errors in transmitted data. By default, CRC4 is not enabled. The sender of a data frame calculates the frame check sequence (FCS). Before it sends a frame, the sender appends the FCS value to the message. The receiver recalculates the FCS and compares its calculation to the FCS from the sender. If there is a difference between the two calculations, the receiver assumes that a transmission error occurred and sends a request to the sender to resend the frame.
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Note The E1-G.703/G.704 interface on PA-4E1G is compliant with BABT 221. The E1-G.703/G.704 interface supports CRC4 in framed mode only. |
Enable CRC4 using the crc 4 command. Before you can enable 4-bit CRC, you must use the interface serial command (followed by the interface address of the interface) to select the interface on which you want to enable 4-bit CRC. This command functions in the same way on all supported platforms.
In the example that follows, 4-bit CRC is specified:
Router(config-if)# crc 4
The preceding command example applies to all systems in which the PA-4E1G is supported. Use the no crc 4 command to disable CRC-4 and return the interface to the default CRC disabled setting.
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 prompt. Then write the new configuration to NVRAM using the copy running-config startup-config command.
For command descriptions, refer to the Configuration Fundamentals Configuration Guide publication. For more information, see the "Cisco Connection Online" section and the "Documentation CD-ROM" section.
After configuring the new interface, use 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-4E1G 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 publication listed in the "Related Documentation" section.
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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. |
| 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-number
| Displays status information about a specific type of interface (for example, serial) in a Cisco 7120 series router | Router# show interfaces serial 3/1 |
show interfaces type 4/interface-port-number
| Displays status information about a specific type of interface (for example, serial) in a Cisco 7140 series router | Router# show interfaces serial 4/1 |
show interfaces type port-adapter-slot-number/ interface-port-number | Displays status information about a specific type of interface (for example, serial) in a Cisco 7200 series router | Router# show interfaces serial 1/0 |
show interfaces type 1/interface-port-number | Displays status information about a specific type of interface (for example, serial) in a Cisco uBR7223 router | Router# show interfaces serial 1/1 |
show interfaces type 1 or 2/ interface-port-number | Displays status information about a specific type of interface (for example, serial) in a Cisco uBR7246 router | Router# show interfaces serial 2/0 |
show interfaces type interface-processor- | Displays status information about a specific type of interface (for example, serial) on a VIP2 in a | Router# show interfaces serial 3/1/0 |
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 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 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:
Display the configuration of the system hardware, the number and type 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 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. |
Following is an example of the show version command from a Cisco 7120 series router with the PA-4E1G:
Router# show version Cisco Internetwork Operating System Software IOS (tm) EGR Software (c7100-IS-M), Version 12.0(4)XE, EARLY DEPLOYMENT RELEASE) TAC:Home:SW:IOS:Specials for info Copyright (c) 1986-1999 by cisco Systems, Inc. Compiled Thu 10-Jun-99 15:32 by linda Image text-base:0x60008900, data-base:0x60D8E000 ROM:System Bootstrap, Version 12.0(19990720:023243) [gautham-conn_4xe-PRE_ALPHE BOOTFLASH:EGR Software (c7100-IS-M), Version 12.0(4)XE, EARLY DEPLOYMENT RELEA) Router uptime is 24 minutes System restarted by power-on System image file is "disk0:c7100-is-mz.120-4.XE" cisco 7120-bad (EGR) processor with 61440K/69632K bytes of memory. R527x CPU at 225Mhz, Implementation 40, Rev 10.0, 2048KB L2 Cache Last reset from power-on Bridging software. G.703/E1 software, Version 1.0. G.703/JT2 software, Version 1.0. 125K bytes of non-volatile configuration memory. 40960K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes). 8192K bytes of Flash internal SIMM (Sector size 256K). Configuration register is 0x2000
Following is an example of the show version command from a Cisco 7200 series router with the PA-4E1G:
Router# show version Cisco Internetwork Operating System Software IOS (tm) 7200 Software (C7200-J-M), Version 11.1(7)CA [biff 105] Copyright (c) 1986-1996 by cisco Systems, Inc. Compiled Sun 04-Aug-96 06:00 by biff Image text-base: 0x600088A0, data-base: 0x605A4000 ROM: System Bootstrap, Version 11.1(7)CA RELEASED SOFTWARE 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 Last reset from power-on G.703/E1 software, Version 1.0. G.703/JT2 software, Version 1.0. SuperLAT software copyright 1990 by Meridian Technology Corp). Bridging software. X.25 software, Version 2.0, NET2, BFE and GOSIP compliant. TN3270 Emulation software (copyright 1994 by TGV Inc). Chassis Interface. 4 Serial network 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
Following is an example of the show version command from a Cisco 7500 series routers with the PA-4E1G:
Router# show version Cisco Internetwork Operating System Software IOS (tm) GS Software (RSP-JV-M), Version 11.1(14)CA [biff 184] Synced to mainline version: 11.1(13) Copyright (c) 1986-1998 by cisco Systems, Inc. Compiled Wed 08-Oct-98 00:37 by biff Image text-base: 0x600108A0, data-base: 0x609DC000 ROM: System Bootstrap, Version 5.3(16645) [biff 571] ROM: GS Software (RSP-BOOT-M), Version 11.1(618) [biff 191] Router uptime is 3 hours, 14 minutes System restarted by reload System image file is "biff/rsp-jv-mz.g703", booted via tftp from 1.1.1.253 cisco RSP2 (R4600) processor with 32768K bytes of memory. R4600 processor, Implementation 32, Revision 2.0 Last reset from power-on G.703/E1 software, Version 1.0. G.703/JT2 software, Version 1.0. SuperLAT software copyright 1990 by Meridian Technology Corp). Bridging software. X.25 software, Version 2.0, NET2, BFE and GOSIP compliant. TN3270 Emulation software (copyright 1994 by TGV Inc). Chassis Interface. 1 VIP2 controllers (4 Serial). 4 Serial network interfaces. 125K bytes of non-volatile configuration memory. 16384K bytes of Flash PCMCIA card at slot 0 (Sector size 128K). 8192K bytes of Flash internal SIMM (Sector size 256K). No slave installed in slot 7. Configuration register is 0x2
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, Cisco 7200 series, Cisco uBR7200 series routers and the interface processor slot in a Cisco 7000 series or Cisco 7500 series router with a VIP2.
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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. |
Following is an example of the show diag slot command that shows a PA-4E1G in port adapter slot 3 of a Cisco 7120 series router:
Router# show diag 3
Slot 3:
Mx serial (ME1-UNBAL) port adapter, 4 ports
Integrated port adapter is analyzed
EEPROM contents at hardware discovery:
Hardware revision 255.255 Board revision UNKNOWN
EEPROM format version 1
EEPROM contents (hex):
0x20:01 D3 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
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Note To use the show diag command with the Cisco 7140 series router, replace the slot argument 3 with 4. |
Following is an example of the show diag slot command that shows a PA-4E1G in port adapter slot 6 of a Cisco 7200 series router:
Router# show diag 6
Slot 6:
Mx serial (ME1-UNBAL) port adapter, 4 ports
Port adapter is analyzed
Port adapter insertion time 00:48:28 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 255
EEPROM contents (hex):
0x20: FF 41 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
Following is an example of the show diag slot command that shows a PA-4E1G in port adapter slot 1 of a VIP2 in interface processor slot 9:
Router# show diag 9
Slot 9:
Physical slot 9, ~physical slot 0x6, logical slot 9, CBus 0
Microcode Status 0x4
Master Enable, LED, WCS Loaded
Board is analyzed
Pending I/O Status: None
EEPROM format version 1
VIP2 controller, HW rev 2.3, board revision A0
Serial number: 03515977 Part number: 73-1684-03
Test history: 0x00 RMA number: 00-00-00
Flags: cisco 7000 board; 7500 compatible
EEPROM contents (hex):
0x20: 01 15 02 03 00 35 A6 49 49 06 94 03 00 00 00 00
0x30: 50 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Slot database information:
Flags: 0x4 Insertion time: 0x3C68 (03:16:49 ago)
Controller Memory Size: 16 MBytes DRAM, 1024 KBytes SRAM
PA Bay 1 Information:
G703 Serial PA, 4 ports
EEPROM format version 255
HW rev FF.FF, Board revision UNKNOWN
Serial number: 4294967243 Part number: 255-65535-255
The show interfaces command displays status information (including the physical slot and interface address) for the interfaces you specify. All of the examples that follow specify serial interfaces.
For complete description of interface subcommands and the configuration options available for Cisco 7100 series, Cisco 7200 series, Cisco uBR7200, and VIP2 interfaces refer to the publications listed in the "Related Documentation" section.
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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. |
Following is an example of the show interfaces command used with a Cisco 7120 series router and a Cisco 7140 series router.
In this example, the four serial interfaces (0 to 3) are on a port adapter in port adapter slot 3 of a
Cisco 7120 series router; also, most of the status information for each interface is omitted. (Interfaces are administratively shut down until you enable them.)
Router# show interfaces serial 3/0 Serial3/0 is up, line protocol is up Hardware is 4ME1-UNBAL Internet address is 10.0.0.0 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive set (10 sec) [Additional display text omitted from this example] Router# show interfaces serial 3/1 Serial3/1 is up, line protocol is up Hardware is 4ME1-UNBAL Internet address is 10.0.0.1 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive set (10 sec) [Additional display text omitted from this example] Router# show interfaces serial 3/2 Serial3/2 is up, line protocol is up Hardware is 4ME1-UNBAL Internet address is 10.0.0.2 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive set (10 sec) [Additional display text omitted from this example] Router# show interfaces serial 3/3 Serial3/3 is up, line protocol is up Hardware is 4ME1-UNBAL Internet address is 10.0.0.3 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive set (10 sec) [Additional display text omitted from this example]
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Note To use the show interfaces serial command with the Cisco 7140 series router, replace the interface address arguments 3/0, 3/1, 3/2, and 3/3 with 4/0, 4/1, 4/2, and 4/3, respectively. |
Following is an example of the show interfaces serial command, which shows all of the information specific to interface 0 on a PA-4E1G installed in port adapter slot 3 of a Cisco 7120 series router:
Router# show interfaces serial 3/0
Serial3/0 is up, line protocol is up
Hardware is 4ME1-UNBAL
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, loopback not set, keepalive set (10 sec)
Last input never, output 1d17h, output hang never
Last clearing of "show interface" counters never
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
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
24 packets output, 5137 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions DCD=down DSR=down DTR=down RTS=down CTS=down
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Note To use the show interfaces serial command with the Cisco 7140 series router, replace the interface address argument 3/0 with 4/0. |
Following example of the show interfaces command for Cisco 7200 series and Cisco uBR7200 series routers. In this example, the four serial interfaces (0 to 3) are on a port adapter in port adapter slot 1; also, most of the status information for each interface is omitted. (Interfaces are administratively shut down until you enable them.)
Router# show interfaces serial 1/0 Serial1/0 is up, line protocol is up Hardware is 4ME1-UNBAL Internet address is 10.0.0.0 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive not set\ [Additional display text omitted from this example] Router# show interfaces serial 1/1 Serial1/1 is up, line protocol is up Hardware is 4ME1-UNBAL Internet address is 10.0.0.1 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive not set\ [Additional display text omitted from this example] Router# show interfaces serial 1/2 Serial1/2 is up, line protocol is up Hardware is 4ME1-UNBAL Internet address is 10.0.0.2 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive not set\ [Additional display text omitted from this example] Router# show interfaces serial 1/3 Serial1/3 is up, line protocol is up Hardware is 4ME1-UNBAL Internet address is 10.0.0.3 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive not set\ [Additional display text omitted from this example]
Following is an example of the show interfaces serial command, which shows all of the information specific to interface port 0 on a PA-4E1G installed in port adapter slot 1:
Router# show interfaces serial 1/0
Serial1/0 is up, line protocol is up
Hardware is 4ME1-UNBAL
Internet address is 5.0.0.2/8
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, loopback not set, keepalive not set
Last input 00:00:00, output never, output hang never
Last clearing of "show interface" counters 00:32:21
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
33 packets input, 10824 bytes, 0 no buffer
Received 66 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
0 alarm indications, 0 remote alarms, 0 rx LOF, 0 rx LOS
DCD up, BER inactive, NELR inactive, FELR inactive
Following is an example of the show interfaces command used with the VIP2. In this example, the four serial interfaces (0 to 3) are on a port adapter in port adapter slot 1 of a VIP2 in interface processor slot 3; also, most of the status information for each interface is omitted. (Interfaces are administratively shut down until you enable them.)
Router# show interfaces serial 3/1/0 Serial3/1/0 is up, line protocol is up Hardware is cyBus Serial Internet address is 10.0.0.0 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive not set [Additional display text omitted from this example] Router# show interfaces serial 3/1/1 Serial3/1/1 is up, line protocol is up Hardware is cyBus Serial Internet address is 10.0.0.1 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive not set [Additional display text omitted from this example] Router# show interfaces serial 3/1/2 Serial3/1/2 is up, line protocol is up Hardware is cyBus Serial Internet address is 10.0.0.2 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive not set [Additional display text omitted from this example] Router# show interfaces serial 3/1/3 Serial3/1/3 is up, line protocol is up Hardware is cyBus Serial Internet address is 10.0.0.3 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive not set [Additional display text omitted from this example]
Following is an example of the show interfaces serial command, which shows all of the information specific to interface 0 on a port adapter in port adapter slot 1 of a VIP2 in interface processor slot 3:
Router# show interfaces serial 3/1/0
Serial3/1/0 is up, line protocol is up
Hardware is cyBus Serial
Internet address is 10.0.0.3
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, loopback not set, keepalive not set
Last input 00:44:43, output 00:00:54, output hang never
Last clearing of "show interface" counters 01:53:04
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
2 packets input, 140 bytes, 0 no buffer
Received 2 broadcasts, 0 runts, 0 giants
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
113 packets output, 37064 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 output buffer failures, 0 output buffers swapped out
6 carrier transitions
0 alarm indications, 0 remote alarms, 0 rx LOF, 0 rx LOS
DCD up, BER inactive, NELR inactive, FELR inactive
Proceed to the next section "Using the ping Command to Verify Network Connectivity" to check network connectivity of the PA-4E1G and switch or router.
Using the ping command, you can verify that an interface port is functioning properly. This section provides a brief description of the ping 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); then repeat the ping command.
Proceed to the next section "Using loopback Commands," to finish checking network connectivity.
With the loopback test, you can detect and isolate equipment malfunctions by testing the connection between the PA-4E1G interface and a remote device such as a modem or CSC/DSU. The loopback subcommand places an interface in loopback mode, which enables test packets that are generated from the ping command to loop through a remote device or compact serial cable. If the packets complete the loop, the connection is good. If not, you can isolate a fault to the remote device or cable in the path of the loopback test.
The E1-G.703/G.704 interface supports the same local loopback test as other (data communications) interfaces. Using the loopback functions, you can check the integrity of the physical data path between the motherboard (or chassis system) and the PA-4E1G with the loopback command. The loopback signal follows this path regardless of whether or not a cable is attached to the port.
Figure 4-1shows the signal path of the loopback function. The no loopback command disables all loopback tests on the interface.
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Note Because each E1-G.703/G.704 interface uses a default clock rate of 2.048 Mbps, you do not have to configure a clock signal on the interface before performing a loopback test. |
Posted: Fri Jan 14 14:23:46 PST 2000
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