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Channelized T3 Interface Processor and Port Adapter
Feature EnhancementsConfigure Maintenance Data Link (MDL) Messages
Enable Performance Report Monitoring
Channelized T3 Interface Processor and Port Adapter
Feature Enhancements
Description
You can now perform the following new tasks on the Channelized T3 Interface Processor (CT3IP) available on Cisco 7500 series routers, and on Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI). You can also perform these tasks on the Channelized T3 dual-wide port adapter (PA-CT3/4T1), which can be used in Cisco 7200 series routers:
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Configure Maintenance Data Link (MDL) messages
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Platforms
This feature is supported on these platforms:
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Configuration Tasks
The following sections describe the new, optional configuration tasks for the CT3IP.
Configure Maintenance Data Link (MDL) Messages
The CT3IP can be configured to send a Maintenance Data Link (MDL) message as defined in the ANSI T1.107a-1990 specification. To specify the transmission of the MDL messages, complete the following tasks beginning in global configuration mode:
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Use the show controllers t3 command to display MDL information (received strings). MDL information is displayed only when framing is set to C-bit.
Enable Performance Report Monitoring
The CT3IP supports performance reports via the Facility Data Link (FDL) per ANSI T1.403. By default, performance reports are disabled. To enable FDL performance reports, complete the following tasks beginning in global configuration mode:
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To display the remote performance report information, complete the following task in EXEC command mode:
Enable BERT Test Pattern
To enable and disable generation of a bit error rate testing (BERT) test pattern for a specified interval for a specific T1 channel, complete the following tasks beginning in global configuration mode:
The BERT test patterns from the CT3IP are framed test patterns (that is, the test patterns are inserted into the payload of the framed T1 signal).
To view the BERT results, use the show controller t3 or show controller t3 brief EXEC command. The BERT results include the following information:
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When the T1 channel has a BERT test running, the line state is DOWN. Also, when the BERT test is running and the Status field is Not Sync, the information in the total bit errors field is not valid. When the BERT test is done, the Status field is not relevant.
The t1 bert pattern command is not written to NVRAM because it is only used for testing the T1 channel for a short predefined interval and to avoid accidentally saving the command, which could cause the interface not to come up the next time the router reboots.
Enable Remote FDL Loopbacks
You can perform the following types of remote Facility Data Link (FDL) loopbacks on a T1 channel:
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To enable loopbacks on a T1 channel, complete the first task beginning in global configuration mode followed by Step 2 or Step 3 depending on the type of loopback you want to perform:
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Configuration Examples
The following examples show several of the Maintenance Data Link (MDL) messages for the CT3IP in slot 9:
Router(config)# controller t3 9/0/0Router(config-controller)# mdl string eic Router CRouter(config-controller)# mdl string lic Network ARouter(config-controller)# mdl string fic Bldg 102Router(config-controller)# mdl string unit 123ABCRouter(config-controller)# exitRouter(config)#In the following example, the performance reports are generated for T1 channel 6 on the CT3IP in slot 9:
Router(config)# controller t3 9/0/0Router(config-controller)# t1 6 fdl ansiRouter(config-controller)# exitThe following example shows how to enable a BERT test pattern that consists of a repeating pattern of ones (...111...) and runs for 30 minutes for T1 channel 8 on CT3IP in slot 9:
Router(config)# controller t3 9/0/0Router(config-controller)# t1 8 bert pattern 1s interval 30Router(config-controller)# exitThe following example shows how to enable a remote payload FDL ANSI bit loopback for T1 channel 6 on CT3IP in slot 3:
Router(config)# interface serial 3/0/0:6Router(config-if)# loopback remote payload fdl ansiRouter(config-if)# exitCommand Reference
This section documents new and modified commands. All other commands used with this feature are documented in the Cisco IOS Release 11.2 command references.
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loopback (T1)
To loop individual T1 channels on the Channelized T3 Interface Processor (CT3IP) in Cisco 7000 series routers with the RSP7000 and RSP7000CI and in Cisco 7500 series routers, use the loopback interface configuration command. Use the no form of this command to remove the loopback.
loopback [local | network {line | payload} | remote {line {fdl {ansi | bellcore} | inband} |
payload [fdl] [ansi]}]
no loopbackSyntax Description
Default
Disabled
Command Mode
Interface configuration
Usage Guidelines
This command first appeared in Cisco IOS Release 11.1 CA.
Use this command for troubleshooting purposes.
To better diagnose T1 provisioning problems, you can place the the remote CSU or remote SmartJack into loopback. The loopback remote line fdl interface configuration command allows you to place either the CSU or the SmartJack into loopback:
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When both are configured, transmission of LOF indication (yellow alarm) takes priority over transmission of some FDL messages.
If the remote loopback appears not to be working, use the show cont t3 command to determine if the given T1 is currently attempting to transmit a LOF indication (yellow alarm):
Router# show controllers t3 0/0/0:2T3 0/0/0 is up.CT3 H/W Version: 5, CT3 ROM Version: 1.2, CT3 F/W Version: 2.5.9Mx H/W version: 2, Mx ucode ver: 1.34T1 2 is down, speed: 1536 kbs, non-inverted datatimeslots: 1-24FDL per AT&T 54016 spec.Transmitter is sending LOF Indication.Receiver is getting AIS.If the transmitter is sending a LOF indication, as in the previous example, stop the transmission of the LOF indication (yellow alarm) with the no t1 yellow generation configuration command as shown in the following example:
Router(config)# controllers t3 0/0/0Router(config-controll)# no t1 2 yellow generationRouter(config-controll)# ^DTo verify that the transmission of the LOF indication (yellow alarm) has stopped, use the show cont t3 command:
Router# show cont t3 0/0/0:2T3 0/0/0 is up.CT3 H/W Version: 5, CT3 ROM Version: 1.2, CT3 F/W Version: 2.5.9Mx H/W version: 2, Mx ucode ver: 1.34T1 2 is down, speed: 1536 kbs, non-inverted datatimeslots: 1-24FDL per AT&T 54016 spec.Receiver is getting AIS.Framing is ESF, Line Code is B8ZS, Clock Source is Internal.Yellow Alarm Generation is disabledNow retry the remote loopback command. When diagnosis is complete, remember to re-enable the LOF indication (yellow alarm).
You can also loopback all the T1 channels by using the loopback (CT3IP) interface configuration command.
Example
The following example configures T1 channel 5 for a local loopback:
interface serial 3/0/0:5loopback localRelated Command
loopback (T3)
mdl
To configure the Maintenance Data Link (MDL) message defined in the ANSI T1.107a-1990 specification for the Channelized T3 Interface Processor (CT3IP) in Cisco 7000 series routers with the RSP7000 and RSP7000CI and in Cisco 7500 series routers, use the mdl interface configuration command. Use the no form of this command to remove the message.
mdl {transmit {path | idle-signal | test-signal} | string {eic | lic | fic | unit | pfi | port |
generator} string}
no mdl {transmit {path | idle-signal | test-signal} | string {eic | lic | fic | unit | pfi | port |
generator} string}Syntax Description
Default
No MDL message is configured
Command Mode
Controller configuration
Usage Guidelines
This command first appeared in Cisco IOS Release 11.1 CA.
Use the show controllers t3 command to display MDL information (received strings). MDL information is displayed only when framing is set to C-bit.
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Examples
The following examples show several of the mdl commands for the CT3IP in slot 9:
controller t3 9/0/0mdl string eic Router Amdl string lic Test Networkmdl string fic Building Bmdl string unit ABCRelated Command
show controller t3
To display information about the Channelized T3 Interface Processor (CT3IP) on Cisco 7000 series routers with the RSP7000 and RSP7000CI and in Cisco 7500 series routers or to display information about the PA-CT3/4T1 in Cisco 7200 series routers, use the show controller t3 privileged EXEC command.
show controller t3 [slot/port-adapter/port [:t1-channel]] [remote performance [brief |
tabular]] (Cisco 7500 series and Cisco 7000 series routers with the RSP7000
and RSP7000CI)
show controller t3 [slot/port [:t1-channel]] [remote performance [brief |tabular]]
(Cisco 7200 series)Syntax Description
Command Mode
Privileged EXEC
Usage Guidelines
This command was modified in Cisco IOS Release 11.1 CA to include the remote performance keyword.
This command displays controller status that is specific to the controller hardware. The information displayed is generally useful for diagnostic tasks performed by technical support personnel only.
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The show controllers t3 command also displays Maintenance Data Link (MDL) information (received strings) if MDL is configured and framing is set to C-bit.
Sample Displays
The following is partial sample output from the show controller t3 command:
Router# show controller t3 3/0/0T3 3/0/0 is up.CT3 H/W Version: 4, CT3 ROM Version: 0.116, CT3 F/W Version: 0.10.0Mx H/W version: 2, Mx ucode ver: 1.24Applique type is Channelized T3No alarms detected.FEAC code received: No code is being receivedFraming is M23, Line Code is B3ZS, Clock Source is Internal.Ext1: LOS, Ext2: LOS, Ext3: LOS, Test: OKData in current interval (39 seconds elapsed):0 Line Code Violations, 0 P-bit Coding Violation0 C-bit Coding Violation0 P-bit Err Secs, 0 P-bit Severely Err Secs0 Severely Err Framing Secs, 0 Unavailable Secs0 Line Errored Secs, 0 C-bit Errored Secs, 0 C-bit Severely Errored SecsTotal Data (last 1 15 minute intervals):0 Line Code Violations, 0 P-bit Coding Violation,0 C-bit Coding Violation,0 P-bit Err Secs, 0 P-bit Severely Err Secs,0 Severely Err Framing Secs, 0 Unavailable Secs,0 Line Errored Secs, 0 C-bit Errored Secs, 0 C-bit Severely Errored SecsT1 1 is down, speed: 1536 kbs, non-inverted datatimeslots: 1-24FDL per ANSI T1.403 and AT&T 54016 spec.Configured for FDL Remotely Line LoopedNo alarms detected.Framing is ESF, LineCode is B8ZS, Clock Source is Internal.BERT test result (running)Test Pattern: All 0's, Status: Sync, Sync Detected: 1Interval: 4 minute(s), Tim Remain: 4 minute(s)Bit Errors (Sync BERT Started): 0 bitsBit Errors (Sync last Sync): 0 bits, Bits Received: 7 Mbits...T1 15 is up, speed: 1536 kbs, non-inverted datatimeslots: 1-24No alarms detected.Framing is ESF, LineCode is B8ZS, Clock Source is Internal.Data in current interval (69 seconds elapsed):0 Line Code Violations, 0 Path Code Violations0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs0 Unavail Secs, 0 Stuffed SecsTotal Data (last 1 15 minute intervals):0 Line Code Violations, 0 Path Code Violations,0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs0 Unavail Secs, 0 Stuffed SecsThe following is partial sample output from the show controller t3 brief command:
router# show controllers t3 3/0/0 briefT3 3/0/0 is up.CT3 H/W Version: 4, CT3 ROM Version: 0.116, CT3 F/W Version: 0.10.0Mxt H/W version: 2, Mxt ucode ver: 1.24Applique type is Channelized T3No alarms detected.FEAC code received: No code is being receivedFraming is M23, Line Code is B3ZS, Clock Source is Internal.Ext1: LOS, Ext2: LOS, Ext3: LOS, Test: OKT1 1 is up, speed: 1536 kbs, non-inverted datatimeslots: 1-24FDL per ANSI T1.403 and AT&T 54016 spec.Configured for FDL Remotely Line LoopedNo alarms detected.Framing is ESF, LineCode is B8ZS, Clock Source is Internal.BERT test result (done)Test Pattern: All 0's, Status: Not Sync, Sync Detected: 1Interval: 4 minute(s), Tim Remain: 0 minute(s)Bit Errors(Sync BERT Started): 0 bitsBit Errors(Sync last Sync): 0 bits, Bits Received: 368 Mbits...The following is partial sample output from the show controllers t3 tabular command:
router# show controllers t3 3/0/0 tabularT3 3/0/0 is up.CT3 H/W Version: 4, CT3 ROM Version: 1.2, CT3 F/W Version: 2.1.0Mx H/W version: 2, Mx ucode ver: 1.25Applique type is Channelized T3No alarms detected.MDL transmission is disabledFEAC code received: No code is being receivedFraming is C-BIT Parity, Line Code is B3ZS, Clock Source is Internal.Ext1: AIS, Ext2: LOS, Ext3: LOS, Test: LOSINTERVAL LCV PCV CCV PES PSES SEFS UAS LES CES CSES08:56-09:11 0 0 0 0 0 0 0 0 0 008:41-08:56 0 0 0 0 0 0 0 0 0 008:26-08:41 0 0 0 0 0 0 0 0 0 0Total 0 0 0 0 0 0 0 0 0 0T1 2 is up, speed: 1536 kbs, non-inverted datatimeslots: 1-24FDL per AT&T 54016 spec.No alarms detected.Framing is ESF, Line Code is B8ZS, Clock Source is Internal.INTERVAL LCV PCV CSS SELS LES DM ES BES SES UAS SS08:56-09:11 0 0 0 0 0 0 0 0 0 0 008:41-08:56 0 0 0 0 0 0 0 0 0 0 008:26-08:41 0 0 0 0 0 0 0 0 0 0 0Total 0 0 0 0 0 0 0 0 0 0 0The following is partial sample output from the show controller t3 remote performance command. This information is available if the t1 fdl ansi controller command is enabled for a T1 channel on a CT3IP.
Router# show controller t3 3/0/0 remote performanceT3 3/0/0 is up.CT3 H/W Version: 4, CT3 ROM Version: 0.116, CT3 F/W Version: 20.2.0Mx H/W version: 2, Mx ucode ver: 1.25T1 1 - Remote Performance DataData in current interval (356 seconds elapsed):0 Line Code Violations, 0 Path Code Violations0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs0 Unavail SecsData in Interval 1:1 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins2 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs0 Unavail SecsData in Interval 2:0 Line Code Violations, 0 Path Code Violations0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs0 Unavail SecsTotal Data (last 2 15 minute intervals):1 Path Code Violations1 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,2 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs0 Unavail Secs...describes the show controller t3 display fields.
t1 bert
To enable or disable a BERT test pattern for a T1 channel on the Channelized T3 Interface Processor (CT3IP) in Cisco 7000 series routers with the RSP7000 and RSP7000CI and in Cisco 7500 series routers, use the t1 bert controller configuration command. To disabled a BERT test pattern, use the no form of this command.
t1 channel bert pattern {0s | 1s | 2^15 | 2^20 | 2^23} interval minutes
no t1 channel bert pattern {0s | 1s | 2^15 | 2^20 | 2^23} interval minutesSyntax Description
Default
No BERT test is performed.
Command Mode
Controller configuration
Usage Guidelines
This command first appeared in Cisco IOS Release 11.1 CA.
The BERT test patterns from the CT3IP are framed test patterns (that is, the test patterns are inserted into the payload of the framed T1 signal).
To view the BERT results, use the show controller t3 or show controller t3 brief EXEC command. The BERT results include the following information:
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When the T1 channel has a BERT test running, the line state is DOWN. Also, when the BERT test is running and the Status field is Not Sync, the information in the Bit Errors field is not valid. When the BERT test is done, the Status field is not relevant.
The t1 bert command is not written to NVRAM because it is only used for testing the T1 channel for a short predefined interval and to avoid accidentally saving the command, which could cause the interface not to come up the next time the router reboots.
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Example
In the following example, a BERT test pattern of all zeros is run for 30 minutes on T1 channel 6 on the CT3IP in slot 9:
controller t3 9/0/0t1 6 bert pattern 0s interval 30t1 fdl ansi
To enable the one-second transmission of the remote performance reports via the Facility Data Link (FDL) per ANSI T1.403 for a T1 channel on the Channelized T3 Interface Processor (CT3IP) in Cisco 7000 series routers with the RSP7000 and RSP7000CI and in Cisco 7500 series routers, use the t1 fdl ansi controller configuration command. Use the no form of this command to disable the performance report.
t1 channel fdl ansi
no t1 channel fdl ansiSyntax Description
Default
Disabled
Command Mode
Controller configuration
Usage Guidelines
This command first appeared in Cisco IOS Release 11.1 CA.
The t1 fdl ansi command can be used only if the T1 framing type is extended superframe (ESF).
To display the remote performance report information, use the show controllers t3 remote performance command.
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Example
In the following example, the performance reports are generated for T1 channel 8 on the CT3IP:
controller t3 9/0/0t1 8 fdl ansiRelated Command
Supported MIBs
The CT3IP supports RFC 1406 and RFC 1407 (CISCO-RFC-1407-CAPABILITY.my). For information on accessing Cisco MIB files, refer to the Cisco MIB User Quick Reference.
For RFC 1406, Cisco supports all tables except the "Frac" table. For RFC 1407, Cisco supports all tables except the "FarEnd" tables.
What to Do Next
For more information on the CT3IP, refer to the Channelized T3 Interface Processor (CT3IP) Installation and Configuration publication. For more information on the PA-CT3/4T1, refer to the Channelized T3 Dual-Wide Port Adapter Installation and Configuration publication.
