- Preface
- New and Changed Information
- Understanding the Carrier Packet Transport System
- Hardware
- Configuring Ethernet Virtual Circuit
- Configuring Multiprotocol Label Switching
- Configuring MPLS–Transport Profile
- Configuring Pseudowire
- Configuring Virtual Private LAN Services
- Configuring Quality of Service
- Configuring High Availability
- Configuring Resilient Ethernet Protocol
- Configuring Link Aggregation Group and Link Aggregation Control Protocol
- Configuring Span
- Configuring MAC Learning
- Configuring Multicast VLAN Registration
- Configuring IGMP Snooping
- Configuring Ethernet OAM, Connectivity Fault Management, and Y.1731
- Configuring Synchronous Ethernet
- Configuring Performance Monitoring, RMON, OTN, and Port Provisioning
- Configuring Local Authentication
- Configuring Cisco Discovery Protocol
- Alarm Troubleshooting
- SNMP
- CPT Error Messages
- Support for MSTP Cards
- Network Element Defaults
- Index
- Understanding Performance Monitoring
- Understanding Threshold Performance Monitoring
- Performance Monitoring, RMON, OTN, and Port Provisioning Procedures
- NTP-J23 Change the PM Display Using CTC
- DLP-J61 Refresh PM Counts at 15–Minute Intervals Using CTC
- DLP-J62 Refresh PM Counts at One–Day Intervals Using CTC
- DLP-J63 View Near–End PM Counts Using CTC
- DLP-J64 View Far-End PM Counts Using CTC
- DLP-J65 Reset Current PM Counts Using CTC
- DLP-J66 Clear Selected PM Counts Using CTC
- DLP-J67 Clear All PM Thresholds Using CTC
- DLP-J68 Set the Auto–Refresh Interval for Displayed PM Counts Using CTC
- NTP-J24 Monitor Performance Using CTC
- Understanding RMON
- Understanding OTN
- NTP-J27 Modify the Ethernet Settings and Alarm Thresholds
Configuring Performance Monitoring, RMON, OTN, and Port Provisioning
This chapter describes performance monitoring, RMON, and OTN, port provisioning and the configuration procedures.
- Understanding Performance Monitoring
- Understanding Threshold Performance Monitoring
- Performance Monitoring, RMON, OTN, and Port Provisioning Procedures
- NTP-J23 Change the PM Display Using CTC
- NTP-J24 Monitor Performance Using CTC
- Understanding RMON
- Understanding OTN
- NTP-J27 Modify the Ethernet Settings and Alarm Thresholds
Understanding Performance Monitoring
Performance monitoring (PM) parameters are used by service providers to gather, store, set thresholds, and report performance data for early detection of problems. In this chapter, PM parameters and concepts are defined for the fabric card, line card, and CPT 50 panel.
![]() Note | For additional information regarding PM parameters, see the ITU G.826, ITU-T G.8021, ITU G.709, Telcordia documents GR-1230-CORE, GR-820-CORE, GR-499-CORE, and GR-253-CORE, and the ANSI T1.231 document entitled Digital Hierarchy - Layer 1 In-Service Digital Transmission Performance Monitoring. |
![]() Note | In CPT IOS, performance monitoring statistics are provided only for 15 minute and 1 day intervals. Historical counts are not maintained in CPT IOS. |
Understanding Threshold Performance Monitoring
Thresholds are used to set error levels for each PM parameter. You can set individual PM threshold values from the card view in the Provisioning tab in CTC.
Each monitored performance parameter has corresponding threshold values for the current time period. If the value of the counter exceeds the threshold value for a particular 15-minute interval, a threshold crossing alert (TCA) is raised. The number represents the counter value for each specific PM parameter.
TCAs provide early detection of performance degradation. When a threshold is crossed, the node continues to count the errors during a given accumulation period. If zero is entered as the threshold value, generation of TCAs is disabled but performance monitoring continues.
Change the threshold value if the default value does not meet your error monitoring needs. For example, customers with a critical OC192/STM64 transponder installed for 911 calls must guarantee the best quality of service on the line; therefore, they lower all thresholds on the client side so that the slightest error raises a TCA.
Performance Monitoring, RMON, OTN, and Port Provisioning Procedures
The following procedures can be performed using Cisco IOS commands to configure performance monitoring, RMON, OTN, and port provisioning:
The following procedures can be performed using CTC to configure performance monitoring, RMON, OTN, and port provisioning:
NTP-J23 Change the PM Display Using CTC
Purpose | This procedure enables you to change the appearance of PM counts using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to change the appearance of PM counts. |
Step 2 |
As needed, use the following procedures to change the display of PM counts:
Stop. You have completed this procedure. |
DLP-J61 Refresh PM Counts at 15–Minute Intervals Using CTC
Purpose | This procedure changes the window view to display PM counts in 15–minute intervals using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to change the window view to display PM counts in 15–minute intervals. | ||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||
Step 3 | Double-click a fabric card, line card, or CPT50 panel. | ||
Step 4 | Click the Performance tab. | ||
Step 5 | To change the PM interval to 15 minutes for a subtab, click the relevant subtabs.
| ||
Step 6 | To change the PM interval to 15 minutes for a specific port, select the port from the Ports drop-down list (when available). | ||
Step 7 | Click the 15 min radio button. | ||
Step 8 | Click Refresh. PM parameters appear in 15-minute intervals synchronized with the time of day. | ||
Step 9 |
View the Curr column to find PM counts for the current 15-minute interval. Each monitored performance parameter has corresponding threshold values for the current time period. If the value of the counter exceeds the threshold value for a particular 15-minute interval, a TCA is raised. The number represents the counter value for each specific PM parameter. | ||
Step 10 |
View the Prev-n columns to find PM counts for the previous 15-minute intervals.
| ||
Step 11 | Return to your originating procedure (NTP). |
DLP-J62 Refresh PM Counts at One–Day Intervals Using CTC
Purpose | This procedure changes the window view to display PM counts in one day intervals using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to change the PM count display interval. | ||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||
Step 3 | Double-click a fabric card, line card, or CPT50 panel. | ||
Step 4 | Click the Performance tab. | ||
Step 5 | To change the PM interval to one day for a subtab, click the relevant subtabs.
| ||
Step 6 | To change the PM interval to one day for a specific port, select the port from the Ports drop-down list (when available). | ||
Step 7 | Click the 1 day radio button. | ||
Step 8 | Click Refresh. PM parameters appear in one day intervals synchronized with the time of day. | ||
Step 9 |
View the Curr column to find PM counts for the current one day interval. Each monitored performance parameter has corresponding threshold values for the current time period. If the value of the counter exceeds the threshold value for a particular one day interval, a TCA is raised. The number represents the counter value for each specific PM parameter. | ||
Step 10 |
View the Prev-n columns to find PM counts for the previous one day intervals.
| ||
Step 11 | Return to your originating procedure (NTP). |
DLP-J63 View Near–End PM Counts Using CTC
Purpose | This procedure displays the near–end PM counts for the selected card and port using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
![]() Note | Near-end PM parameters are available only for OTN. |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to view the near-end PM counts. | ||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||
Step 3 | Double-click a fabric card, line card, or CPT50 panel. | ||
Step 4 | Click the Performance tab. | ||
Step 5 | To view the near-end PM counts for a subtab, click the relevant subtabs.
| ||
Step 6 | To view near-end PM counts for a specific port, select the port from the Ports drop-down list (when available). | ||
Step 7 | Click the Near End radio button (when available). Viewing near-end PM counts is not available on some tabs. | ||
Step 8 | Click Refresh. All the current PM parameters for the selected card on the incoming signal appear. | ||
Step 9 | View the Curr column to find PM counts for the current time interval. | ||
Step 10 | View the Prev-n columns to find PM counts for the previous time intervals. | ||
Step 11 | Return to your originating procedure (NTP). |
DLP-J64 View Far-End PM Counts Using CTC
Purpose | This procedure displays the far-end PM parameters for the selected card and port using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
![]() Note | Far-end PM parameters are available only for OTN. |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to view the far-end PM counts. | ||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||
Step 3 | Double-click a fabric card, line card, or CPT50 panel. | ||
Step 4 | Click the Performance tab. | ||
Step 5 | To view the far-end PM counts for a subtab, click the relevant subtabs.
| ||
Step 6 | To view the far-end PM counts for a specific port, select the port from the Ports drop-down list (when available). | ||
Step 7 | Click the Far End radio button (when available). Viewing far-end PM counts is not available on some tabs. | ||
Step 8 | Click Refresh. All the PM parameters recorded by the far-end node for the selected card on the outgoing signal appear. | ||
Step 9 | View the Curr column to find PM counts for the current time interval. | ||
Step 10 | View the Prev-n columns to find PM counts for the previous time intervals. | ||
Step 11 | Return to your originating procedure (NTP). |
DLP-J65 Reset Current PM Counts Using CTC
Purpose | This procedure resets the current PM counts using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to reset the current PM counts. | ||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||
Step 3 | Double-click a fabric card, line card, or CPT50 panel. | ||
Step 4 | Click the Performance tab. | ||
Step 5 | To reset the PM counts for a subtab, click the relevant subtabs.
| ||
Step 6 | To reset the PM counts for a specific port, select the port from the Ports drop-down list (when available). | ||
Step 7 | Click Baseline.
| ||
Step 8 | In the Baseline Statistics dialog box, click one of the following radio buttons:
| ||
Step 9 | In the Baseline Statistics dialog box, click Set Baseline to reset the selected statistics. | ||
Step 10 | View the current statistics columns to observe changes to PM counts for the current time interval. | ||
Step 11 | Return to your originating procedure (NTP). |
DLP-J66 Clear Selected PM Counts Using CTC
Purpose | This procedure clears the selected PM counts using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
![]() Caution | Clicking the Clear button can mask problems if used incorrectly. This button is commonly used for testing purposes. After clicking this button, the current count is marked invalid. Also note that the unavailable seconds (UAS) count is not cleared if you were counting UAS; therefore, this count could be unreliable when you click Clear. |
![]() Note | The CTC and IOS interface counters are mutually exclusive. When you clear the counters through CTC (Card view -> Performance or Card view -> Performance -> Payload PM), the IOS counters are not cleared. When you clear the counters through IOS using the clear count command, the CTC counters are not cleared. The baseline is maintained separately for both the CTC and IOS counters. The user must not view the IOS counters if the configuration mode is in CTC mode and vice versa. |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to clear the selected PM counts. | ||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||
Step 3 | Double-click a fabric card, line card, or CPT50 panel. | ||
Step 4 | Click the Performance tab. | ||
Step 5 | To clear the selected PM counts for a subtab, click the relevant subtabs and click Clear.
| ||
Step 6 | To clear the selected PM counts for a specific port, select the OTN subtab or port from the Ports drop-down list (when available). | ||
Step 7 | Click Clear. | ||
Step 8 | In the Clear Statistics dialog box, click one of the following radio buttons:
| ||
Step 9 | In the Clear Statistics dialog box, click OK to clear the selected statistics. Click Yes to confirm the change. | ||
Step 10 | Verify that the selected PM counts have been cleared. | ||
Step 11 | Return to your originating procedure (NTP). |
DLP-J67 Clear All PM Thresholds Using CTC
Purpose | This procedure clears all the PM thresholds using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
![]() Caution | Clicking the Reset button can mask problems if used incorrectly. This button is commonly used for testing purposes. |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to clear all the PM thresholds. |
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. |
Step 3 | Double-click a fabric card, line card, or CPT50 panel. |
Step 4 | Click the Provisioning tab. |
Step 5 | Click the Thresholds subtabs. The subtab names vary depending on the selected card. |
Step 6 | Click Reset to Default. |
Step 7 | Click Yes in the Reset to Default dialog box. |
Step 8 | Verify that the PM thresholds have been reset. |
Step 9 | Return to your originating procedure (NTP). |
DLP-J68 Set the Auto–Refresh Interval for Displayed PM Counts Using CTC
Purpose |
This procedure sets the auto–refresh interval for displayed PM counts using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to set the auto-refresh interval for displayed PM counts. | ||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||
Step 3 | Double-click a fabric card, line card, or CPT50 panel. | ||
Step 4 | Click the Performance tab. | ||
Step 5 | To set the PM
auto-refresh interval for a subtab, click the relevant subtabs.
| ||
Step 6 | To set the PM auto-refresh interval for a specific port, select the port from the Ports drop-down list (when available). | ||
Step 7 | From the
Auto-refresh drop-down list, choose one of the following options:
| ||
Step 8 | Click
Refresh. The PM counts for the newly selected
auto-refresh time interval appear.
Depending on the selected auto-refresh interval, the displayed PM counts automatically update when each refresh interval completes. If the auto-refresh interval is set to None, the PM counts that appear are not updated unless you click Refresh. | ||
Step 9 | Return to your originating procedure (NTP). |
NTP-J24 Monitor Performance Using CTC
Purpose | This procedure monitors the near-end or far-end performance of the node for selected time intervals on the fabric and line cards. |
Tools/Equipment | None |
Prerequisite Procedures | Ensure you have created the appropriate circuits and provisioned the card according to your specifications. |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at the node that you want to monitor the performance. | ||
Step 2 |
Complete the following procedures as needed to view the PM parameters for the fabric, line card, or CPT 50 shelf:
Stop. You have completed this procedure. |
DLP-J72 Display Performance Monitoring Parameters Using Cisco IOS Commands
Purpose | This procedure displays the performance monitoring parameters using Cisco IOS commands. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
![]() Note | In CPT IOS, performance monitoring statistics are provided only for 15 minute and 1 day intervals. Historical counts are not maintained in CPT IOS. FEC, optical transport network (OTN), alarm, and TCA thresholds are not provided through CPT IOS. |
DLP-J69 Provision PPM and Port Using CTC
Purpose | This procedure provisions a PPM and port in a fabric card, line card, or CPT50 panel using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to provision a PPM and port. | ||
Step 2 | In the node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||
Step 3 | In the Packet Transport System View dialog box, double-click a fabric card, line card, or CPT50 panel. | ||
Step 4 | Click the Provisioning > Pluggable Port Modules tabs. | ||
Step 5 | In the Pluggable Port Modules area, click Create. The Create PPM dialog box appears. | ||
Step 6 | In the Create PPM dialog box, complete the following: | ||
Step 7 | Click OK. The newly created PPM appears in the Pluggable Port Modules area. The row in the Pluggable Port Modules area becomes white when the PPM is inserted and the Actual Equipment Type column lists the name of the PPM. | ||
Step 8 | In the Pluggable Ports area, click Create. The Create Port dialog box appears. | ||
Step 9 | In the Create Port dialog box, complete the following:
| ||
Step 10 | Click OK. The newly created port appears in the Pluggable Ports area. The port type you provisioned is listed in the Rate column. | ||
Step 11 | Repeat Steps DLP-J69 Provision PPM and Port Using CTC through DLP-J69 Provision PPM and Port Using CTC to provision another PPM and port. | ||
Step 12 | Return to your originating procedure (NTP). |
DLP-J70 View Optics PM Parameters Using CTC
Purpose | This procedure displays the optics PM parameters using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to view the optics PM parameters. | ||||||||||||||||||||||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||||||||||||||||||||||
Step 3 | Double-click a fabric card, line card, or CPT50 panel. | ||||||||||||||||||||||
Step 4 | Click the Performance > Optics PM > Current Values tabs. | ||||||||||||||||||||||
Step 5 | View the current PM parameter names that appear in the Param column. | ||||||||||||||||||||||
Step 6 | Click the Historical PM tab. | ||||||||||||||||||||||
Step 7 | View the PM parameter names that appear in the Param column. The PM parameter values appear in the Curr (current) and Prev-n (previous) columns.
Table 1 describes the settings for the optics PM parameters.
| ||||||||||||||||||||||
Step 8 | Return to your originating procedure (NTP). |
DLP-J71 View Payload PM Parameters Using CTC
Purpose |
This procedure displays the payload PM parameters using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | DLP-J69 Provision PPM and Port Using CTC |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to view the payload PM parameters. | ||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||
Step 3 | Double-click a fabric card, line card, or CPT50 panel. | ||
Step 4 | Click the Performance > Payload PM > Statistics tabs. | ||
Step 5 | Click
Refresh. PM statistics appear for each port on the
card.
| ||
Step 6 | View the PM
parameter names that appear in the Param column. The current PM parameter
values appear in the Port # columns.
Payload PM parameters are as follows: | ||
Step 7 | Click the Performance > Payload PM > Utilization tabs. | ||
Step 8 | Click Refresh. PM utilization values appear for each port on the card. | ||
Step 9 | View the appropriate row for the port you want to monitor. The transmit (Tx) and receive (Rx) bandwidth utilization values for the previous time intervals appear in the Prev-n columns. | ||
Step 10 | Click the Performance > Payload PM > History tabs. | ||
Step 11 | From the Port drop-down list, choose the desired port. | ||
Step 12 | Click Refresh. PM statistics appear for the selected port. | ||
Step 13 | View the PM parameter names that appear in the Param column. The PM parameter values appear in the Prev-n columns. | ||
Step 14 | Return to your originating procedure (NTP). |
Understanding RMON
Remote Network Monitoring (RMON) is a standard monitoring feature that allows various network agents and console systems to exchange network monitoring data. RMON provides you with comprehensive network-fault diagnosis, planning, and performance-tuning information. You can use the RMON feature with the Simple Network Management Protocol (SNMP) agent in the switch to monitor all the traffic flowing among switches on all connected LAN segments as shown in Figure 1.

Default RMON Configuration
RMON is disabled by default; no alarms or events are configured.
- NTP-J25 Configure RMON Settings
- DLP-J74 Configure RMON Settings Using Cisco IOS Commands
- Display RMON Status Using Cisco IOS Commands
- DLP-J73 Change the RMON Thresholds Using CTC
NTP-J25 Configure RMON Settings
Purpose | This procedure configures RMON settings. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Stop. You have completed this procedure. |
DLP-J74 Configure RMON Settings Using Cisco IOS Commands
Purpose | This procedure configures the RMON settings using Cisco IOS commands. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Display RMON Status Using Cisco IOS Commands
To display the current RMON agent status on the router, use one or more of the privileged EXEC commands described in Table 1.
Command | Purpose |
---|---|
show rmon or show rmon task |
Displays general RMON statistics. |
show rmon alarms | Displays the RMON alarm table. |
show rmon capture | Displays the RMON buffer capture table and current configuration. |
show rmon events | Displays the RMON event table. |
show rmon filter | Displays the RMON filter table. |
show rmon history | Displays the RMON history table. |
show rmon hosts | Displays the RMON hosts table. |
show rmon matrix | Displays the RMON matrix table and values associated with RMON variables. |
show rmon statistics | Displays the RMON statistics table. |
show rmon topn | Displays the RMON top-n hosts table. |
For examples on show rmon command, see the Cisco CPT Command Reference Guide.
DLP-J73 Change the RMON Thresholds Using CTC
Purpose | This procedure changes the RMON threshold settings using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | DLP-J69 Provision PPM and Port Using CTC |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to change the RMON thresholds. | ||||||||||||||||||||||||||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||||||||||||||||||||||||||
Step 3 | Double-click a fabric card, line card, or CPT50 panel. | ||||||||||||||||||||||||||
Step 4 | Click the Provisioning > RMON Thresholds tabs. | ||||||||||||||||||||||||||
Step 5 | Click Create. The Create Threshold dialog box appears. | ||||||||||||||||||||||||||
Step 6 | From the Port drop-down list, choose an individual port, or choose All to provision RMON thresholds for all the ports. | ||||||||||||||||||||||||||
Step 7 | From the Variable drop-down list, choose an appropriate Ethernet variable. Table 1 lists the available Ethernet RMON variables.
| ||||||||||||||||||||||||||
Step 8 | From the Alarm Type drop-down list, indicate whether the event will be triggered by the rising threshold, the falling threshold, or both the rising and falling thresholds. | ||||||||||||||||||||||||||
Step 9 | From the Sample Type drop-down list, choose either Relative or Absolute. Relative restricts the threshold to use the number of occurrences in the user-set sample period. Absolute sets the threshold to use the total number of occurrences, regardless of time period. | ||||||||||||||||||||||||||
Step 10 | Enter the appropriate number of seconds for the sample period in the Sample Period field. | ||||||||||||||||||||||||||
Step 11 | Enter the appropriate number of occurrences for the rising threshold in the Rising Threshold field. For a rising type of alarm, the measured value must move from below the falling threshold to above the rising threshold. For example, if a network is running below a rising threshold of 1000 collisions every 15 seconds and a problem causes 1001 collisions in 15 seconds, the excess occurrences trigger an alarm. | ||||||||||||||||||||||||||
Step 12 | Enter the appropriate number of occurrences in the Falling Threshold field. In most cases a falling threshold is set lower than the rising threshold. A falling threshold is the counterpart to a rising threshold. When the number of occurrences is above the rising threshold and then drops below a falling threshold, it resets the rising threshold. For example, when the network problem that caused 1001 collisions in 15 seconds subsides and creates only 799 collisions in 15 seconds, occurrences fall below a falling threshold of 800 collisions. This resets the rising threshold so that if the network collisions again spike over a 1000 per 15-second period, an event triggers when the rising threshold is crossed. An event is triggered only for the first time when a rising threshold is exceeded (otherwise, a single network problem might cause a rising threshold to be exceeded multiple times and cause a flood of events). | ||||||||||||||||||||||||||
Step 13 | Click OK. | ||||||||||||||||||||||||||
Step 14 | To view all the RMON thresholds, click Show All RMON thresholds. | ||||||||||||||||||||||||||
Step 15 | Return to your originating procedure (NTP). |
Understanding OTN
The Optical Transport Network (OTN) protocol is specified in ITU-T G.709. This standard combines the benefits of SONET/SDH technology with the multiwavelength networks of DWDM. It also provides forward error correction (FEC) that reduces network costs by reducing the number of regenerators used.
To enable multiservice transport, OTN uses the concept of a wrapped overhead (OH). To illustrate this structure:
Optical channel payload unit (OPU) OH information is added to the information payload to form the OPU. The OPU OH includes information to support the adaptation of client signals.
Optical channel data unit (ODU) OH is added to the OPU to create the ODU. The ODU OH includes information for maintenance and operational functions to support optical channels.
Optical channel transport unit (OTU) OH together with the FEC is added to form the OTU. The OTU OH includes information for operational functions to support the transport by way of one or more optical channel connections.
Optical channel (OCH) OH is added to form the OCH. The OCH provides the OTN management functionality and contains four subparts: the OPU, ODU, OTU, and frame alignment signal (FAS). See Figure 1.

OTN has the following advantages:
Stronger forward error correction
More levels of Tandem Connection Monitoring (TCM)
Transparent transport of signals
Switching scalability
![]() Note | The OTN parameters can be changed only through CTC. |
- NTP-J26 Configure OTN Settings
- DLP-J75 Change the Optical Transport Network Settings Using CTC
- DLP-J76 View OTN PM Parameters Using CTC
NTP-J26 Configure OTN Settings
Purpose | This procedure configures OTN settings. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Stop. You have completed this procedure. |
DLP-J75 Change the Optical Transport Network Settings Using CTC
Purpose | This procedure changes the OTN settings for the fabric, line card, or CPT 50 shelf using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
This procedure applies only to the XFP ports of the fabric card (port 3 and port 4).
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to change the OTN settings. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Step 2 | In node view, right-click the fabric card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Step 3 | Double-click a fabric card. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Step 4 | Click the Provisioning > OTN tabs. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Step 5 | Choose one of the following subtabs— OTN Lines, ITU-T G.709 Thresholds, FEC Thresholds, Trail Trace Identifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Step 6 | Modify any of the settings described in Table 1 to Table 4.
Table 1 describes the values on the Provisioning > OTN > OTN Lines tab.
Table 2 describes the values on the Provisioning > OTN > ITU-T G.709 Thresholds tab.
Table 3 describes the values on the Provisioning > OTN > FEC Thresholds tab.
Table 4 describes the values on the Provisioning > OTN > Trail Trace Identifier tab.
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Step 7 | Return to your originating procedure (NTP). |
DLP-J76 View OTN PM Parameters Using CTC
Purpose | This procedure displays the OTN PM parameters using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to view the near-end or far-end OTN PM parameters for the selected time intervals. | ||||||||||||||||||||||||||||||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||||||||||||||||||||||||||||||
Step 3 | Double-click a fabric card. | ||||||||||||||||||||||||||||||
Step 4 | Click the Performance > OTN PM > ITU-T G.709 PM tabs. | ||||||||||||||||||||||||||||||
Step 5 | View the PM parameter names that appear in the Param column. The PM parameter values appear in the Curr (current) and Prev-n (previous) columns. Table 1 describes the settings for ITU G.709 PM definitions.
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Step 6 | Click the FEC PM tab. | ||||||||||||||||||||||||||||||
Step 7 | View the PM parameter names that appear in the Param column. The PM parameter values appear in the Curr (current) and Prev-n (previous) columns. Table 2 describes the settings for FEC PM definitions.
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Step 8 | Return to your originating procedure (NTP). |
NTP-J27 Modify the Ethernet Settings and Alarm Thresholds
Purpose | This procedure modifies the Ethernet settings and alarm thresholds. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Stop. You have completed this procedure. |
DLP-J77 Provision Alarm and TCA Thresholds Using CTC
Purpose | This procedure changes the alarm and TCA thresholds for the fabric, line card, or CPT 50 panel using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to provision alarm and TCA thresholds. | ||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||
Step 3 | Double-click a fabric card, line card, or CPT50 panel. | ||
Step 4 |
Click the Provisioning > Optics Thresholds tabs.
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Step 5 | If TCA is not selected, click TCA and then click Refresh.
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Step 6 | Verify the provisioned TCA threshold values in the Warning Thresholds table. To provision new thresholds as needed, click the threshold value you want to change, delete it, enter a new value, and press Enter. | ||
Step 7 | Under Types, click the Alarm radio button and click Refresh.
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Step 8 | Verify the provisioned alarm threshold values in the Alarm Thresholds table. To provision new thresholds as needed, click the threshold value you want to change, delete it, enter a new value, and press Enter. | ||
Step 9 | Click Apply. | ||
Step 10 | Return to your originating procedure (NTP). |
Carrier Delay
Carrier delay is the soak period before link failure is communicated to higher protocols.
Default Carrier Delay Duration
This table lists the default duration for carrier delay.
Card/Port | Default Time |
---|---|
Ports on the fabric card | 2 seconds |
Ports on the line card | 200 milliseconds |
Ports on the CPT 50 panel | 200 milliseconds |
Ports on the ring | 10 milliseconds |
The range of carrier delay is from 0 to 60. The higher carrier delay affects the switch times for protocols such as LAG and REP. See DLP-J78 Change the Port and Ethernet Settings Using CTC to change the carrier delay time.
Carrier Delay Limitations
When Ethernet services are configured, set the carrier delay time to greater than or equal to 2 seconds for fabric cards and CPT 50 panels attached to fabric cards. When MPLS services are configured, set the carrier delay time to less than 2 seconds, for fabric cards and CPT 50 panels attached to fabric cards. However, this time limit does not apply to line cards and CPT 50 panels attached to line cards. The carrier delay time of 2 seconds in fabric cards can cause traffic drops on SSO.
DLP-J78 Change the Port and Ethernet Settings Using CTC
Purpose |
This procedure changes the port and Ethernet settings for the fabric, line card, or CPT 50 shelf using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to change the port and Ethernet settings. | ||||||||||||||||||||||||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||||||||||||||||||||||||
Step 3 | Double-click a fabric card, line card, or CPT50 panel. | ||||||||||||||||||||||||
Step 4 | Click the Provisioning > Ether Ports > Ethernet tabs. | ||||||||||||||||||||||||
Step 5 | Modify any of
the settings for the Ethernet tab as described in
Table 1.
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Step 6 | Click the Provisioning > Ether Ports > Port tabs. | ||||||||||||||||||||||||
Step 7 | Modify any of
the settings for the Port tab as described in
Table 2.
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Step 8 | Click Apply. | ||||||||||||||||||||||||
Step 9 | Return to your originating procedure (NTP). |
DLP-J339 Provision the PDH Ethernet Settings
Purpose | This procedure changes the PDH Ethernet settings for the CPT 50 shelf using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to change the port and Ethernet settings. | ||||||||||||||||||||||||||||||||||||||||||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | ||||||||||||||||||||||||||||||||||||||||||
Step 3 | Double-click the CPT50 panel. | ||||||||||||||||||||||||||||||||||||||||||
Step 4 | Click the Provisioning > Ether Ports > PDH Ethernet Parameters tabs. | ||||||||||||||||||||||||||||||||||||||||||
Step 5 | Modify any of the settings for the PDH Ethernet Parameters tab as described in the following table.
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Step 6 | Click Apply. | ||||||||||||||||||||||||||||||||||||||||||
Step 7 | Return to your originating procedure (NTP). |
DLP-J340 Provision the Electrical Lines Settings
Purpose | This procedure changes the electrical line settings for the CPT 50 shelf using CTC. |
Tools/Equipment | None |
Prerequisite Procedures | None |
Required/As Needed | As needed |
Onsite/Remote | Onsite or remote |
Security Level | Provisioning or higher |
Step 1 | Complete the NTP-J22 Log into CTC procedure at a node where you want to change the port and Ethernet settings. | |||||||||||||||||||||
Step 2 | In node view, right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears. | |||||||||||||||||||||
Step 3 | Double-click the CPT50 panel. | |||||||||||||||||||||
Step 4 | Click the Provisioning > Ether Ports > Electrical Lines tabs. | |||||||||||||||||||||
Step 5 | Modify any of the settings for the Electrical Lines > DS1 or Electrical Lines > DS3 tab as described in the following table.
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Step 6 | Click Apply. | |||||||||||||||||||||
Step 7 | Return to your originating procedure (NTP). |