Managing DWDM Networks

The Cisco IP over dense wavelength division multiplexing (IPoDWDM) solution enables the convergence of the IP and DWDM core networks of the service providers. It increases service flexibility, operational efficiency and reliability while lowering operating expenses (OpEx) and capital expenditures (CapEx).

Prime Network discovers and displays the following DWDM attributes in the Physical Inventory tree of the Vision client:

  • DWDM controllers. The controller location is same as the DWDM interface.
  • Loopback information for the DWDM controller.
  • DWDM controller status.
  • DWDM port properties—Wavelength, Laser Status, Tx Power, and Rx Power.
  • DWDM controller card status (G.709 status).

Prime Network also provides commands that support DWDM and Synchronous Optical Network (SONET) controllers. These commands help in configuring the device and in displaying device details. The commands are described in Configuring and Viewing DWDM. (For information on the SONET commands, see Configuring Clock.)

The following topics describe how you can view and monitor IP over dense wavelength division multiplexing (DWDM) properties configured on network elements by using the Vision client. If you cannot perform an operation that is described in these topics, you may not have sufficient permissions; see Permissions for Managing DWDM.

Viewing DWDM in Physical Inventory

The Vision client enables you to monitor a variety of DWDM properties in physical inventory, including forward error correction (FEC), G.709 status, and performance monitoring parameters.

To view DWDM properties in physical inventory:


Step 1blank.gif In the Vision client, double-click the device on which DWDM is configured.

Step 2blank.gif In the Inventory window, choose Physical Inventory > Chassis and navigate to the interface configured for DWDM. DWDM details are displayed in the DWDM area in the content pane as shown in Figure 16-1.

Figure 16-1 DWDM Properties in Physical Inventory

 

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Table 16-1 describes the information displayed for DWDM.

 

Table 16-1 DWDM Properties in Physical Inventory

Field
Description

Location

Physical interface using the format rack / slot / module / port where:

  • rack is the chassis number of the rack.
  • slot is the physical slot number of the line card.
  • module is the module number. A physical layer interface module (PLIM) is always 0. Shared port adapters (SPAs) are referenced by their subslot number.
  • port is the physical port number of the interface.

Controller Status

Status of the controller: Up or Down.

Loopback

Whether or not the DWDM controller is configured for loopback mode.

Frequency

Frequency of the channel in terahertz.

Port Type

The port type. In this case, DWDM.

MSA ITU Channel

Multi Source Agreement (MSA) ITU channel number.

Rx Power

Actual optical power at the receiving port.

Tx Power

Value of the transmit power level.

Rx LOS Threshold

Number of optical channel transport unit (OTU) loss of signal (LOS) alarms. If the receive optical power is less than or equal to this defined threshold, the optical LOS alarm is raised.

Wavelength

Wavelength corresponding to the channel number in nanometers.

Wavelength Band

Indicates the wavelength band: C-band or L-band.

Optics Type

Indicates the optics type: GE or DWDM.

G709 Properties

G709 Status

Whether the G.709 wrapper is enabled or disabled: Up or Down.

OTU Detected Alarms

OTU overhead alarms.

ODU Detected Alarms

Optical channel data unit (ODU) alarms.

OTU Detected Alerts

OTU alerts.

ODU Detected Alerts

ODU alerts.

FEC Info

Indicates the:

  • FEC mode of the controller: Disabled, Enhanced, Standard, or Unknown.
  • FEC mode on the remote device: Disabled, Enhanced, Standard, or Unknown.
  • Number of sync word mismatches found during the tracking phase.

G709 Details

Click to view G709 properties. For more information, see Viewing G.709 Properties.

PM 15-min Settings

Click to view 15-minute performance monitoring properties. For more information, see Viewing Performance Monitoring Configuration.

PM 24-hour Settings

Click to view 24-hour performance monitoring properties. For more information, see Viewing Performance Monitoring Configuration.


 

Viewing G.709 Properties

The Telecommunication Standardization Sector (ITU-T) Recommendation G.709 provides a standardized method for transparently transporting services over optical wavelengths end to end. A significant component of G.709 is the FEC code that improves performance and extends the distance that optical signals can span.

To view G.709 properties:


Step 1blank.gif In the Vision client, double-click the device on which DWDM is configured.

Step 2blank.gif In the Inventory window, choose Physical Inventory > Chassis and navigate to the interface configured for DWDM.

Step 3blank.gif In the content pane, click G709 Details. Figure 16-2 and Figure 16-3 provide examples of the G709 Info Properties windows. Most devices provide the information shown in Figure 16-2.

Figure 16-2 DWDM G709 Properties Window—Example 1

 

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Figure 16-3 shows the tabs that are displayed for devices such as the Cisco 7600 series, where the ODU Alert Counters tab is displayed, but the ODU TTI and OTU TTI tabs are not displayed.

Figure 16-3 DWDM G709 Properties Window —Example 2

 

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Table 16-2 describes the fields that are displayed above the tabs in the G709 Info Properties window.

 

Table 16-2 DWDM G709 Properties Window

Field
Description

Location

Physical interface using the format rack / slot / module / port where:

  • rack is the chassis number of the rack.
  • slot is the physical slot number of the line card.
  • module is the module number. A physical layer interface module (PLIM) is always 0. Shared port adapters (SPAs) are referenced by their subslot number.
  • port is the physical port number of the interface.
OTU Alarms

OTU Alarm Reporting Enabled for

The types of alarms enabled for reporting:

  • AIS—Alarm indication signal (AIS) alarms.
  • BDI—Backward defect indication (BDI) alarms.
  • BEI—Backward error indication (BEI) alarms.
  • BIP—Bit interleaved parity (BIP) alarms.
  • FECMISMATCH—FEC mismatch alarms.
  • IAE—Incoming alignment error (IAE) alarms.
  • LOF—Loss of frame (LOF) alarms.
  • LOM—Loss of multiple frames (LOM) alarms.
  • LOS—Loss of signal (LOS) alarms.
  • TIM—Type identifier mismatch (TIM) alarms.

OTU Asserted Alarms

OTU alarms indicated to be reported by the user.

OTU Detected Alarms

OTU alarms detected by the hardware.

ODU Alarms

ODU Alarm Reporting Enabled for

The types of ODU alarms enabled for reporting:

  • AIS—Incoming SONET AIS error status.
  • BDI—Path termination BDI error status.
  • BEI—Backward error indication (BEI) error status.
  • BIP—Bit interleaved parity (BIP) error status.
  • LCK—Upstream connection locked (LCK) error status.
  • OCI—Open connection indication (OCI) error status.
  • PTIM—Payload TIM error status.
  • TIM—Data stream TIM error status.

ODU Asserted Alarms

ODU alarms indicated to be reported by the user.

ODU Detected Alarms

ODU alarms detected by the hardware.

OTU Alerts

OTU Alert Reporting Enabled for

The types of alerts enabled for reporting:

  • SD-BER—Section Monitoring (SM) bit error rate (BER) is in excess of the signal degradation (SD) BER threshold.
  • SF-BER—SM BER is in excess of the signal failure (SF) BER threshold.
  • PM-TCA—Performance monitoring (PM) threshold crossing alert (TCA).
  • SM-TCA—SM threshold crossing alert.

OTU Asserted Alerts

OTU alerts indicated to be reported by the user.

OTU Detected Alerts

OTU alerts detected by the hardware.

ODU Alerts

ODU Alert Reporting Enabled for

The types of ODU alerts enabled for reporting:

  • SD-BER—SM BER is in excess of the SD BER threshold.
  • SF-BER—SM BER is in excess of the SF BER threshold.
  • PM-TCA—PM threshold crossing alert.
  • SM-TCA—SM threshold crossing alert.

ODU Asserted Alerts

ODU alerts indicated to be reported by the user.

ODU Detected Alerts

ODU alerts detected by the hardware.

Other

FEC Info

FEC properties:

  • FEC mode for the controller—Disable, Enhanced, Standard, or Unknown.
  • Remote FEC mode—FEC mode on the remote device: Disabled, Enhanced, Standard, or Unknown.
  • FEC mismatch counter—Number of sync word mismatches found during the tracking phase.

Status

G.709 wrapper administrative status: Up or Down.

Step 4blank.gif To view additional G.709 properties, click the required tab. Table 16-3 describes the information displayed in each tab. The information that is displayed depends on the selected network element.

 

Table 16-3 G709 Properties Window Tabs

Field
Description
OTU Alarm Counters Tab

Type

Type of OTU alarm, such as BDI or BEI.

Counter

Number of alarms reported for each alarm type.

OTU Alert Counters Tab

Type

Type of OTU alert, such as SD-BER or SF-BER.

Threshold

Threshold set for the type of alert.

Counter

Number of alerts reported for each alert type. A value of -1 indicates that no value has been set up.

ODU Alarm Counters Tab

Type

Type of ODU alarm, such as AIS or BDI.

Counter

Number of alarms reported for each alarm type.

OTU TTI Tab

(Displayed for most devices but not for those such as the Cisco 7600 series))

Type

Type of OTU Trail Trace Identifier (TTI) configured:

  • Expected
  • Received
  • Sent

String Type

For each TTI type, the type of string:

  • ASCII
  • Hexadecimal

TTI String

For each TTI type, the specific TTI string configured.

ODU TTI Tab

(Displayed for most devices but not for those such as the Cisco 7600 series)

Type

Type of ODU TTI configured:

  • Expected
  • Received
  • Sent

String Type

For each TTI type, the type of string:

  • ASCII
  • Hexadecimal

TTI String

For each TTI type, the specific TTI string configured.

ODU Alert Counters Tab

(Displayed for devices such as the Cisco 7600 series.)

Type

Type of OTU alert, such as SD-BER or SF-BER.

Threshold

Threshold set for the type of alert.

Counter

Number of alerts reported for each alert type. A value of -1 indicates that no value has been set up.

Step 5blank.gif To close the G709 Info Properties window, click the upper right corner.


 

Viewing Performance Monitoring Configuration

Performance monitoring parameters are used to gather, store, set thresholds for, and report performance data for early detection of problems. Thresholds are used to set error levels for each performance monitoring parameter. During the accumulation cycle, if the current value of a performance monitoring parameter reaches or exceeds its corresponding threshold value, a threshold crossing alert (TCA) can be generated. The TCAs provide early detection of performance degradation.

The Vision client enables you to view the configuration settings for performance monitoring. Performance monitoring statistics are accumulated on a 15-minute basis, synchronized to the start of each quarter-hour. They are also accumulated on a daily basis starting at midnight. Historical counts are maintained for thirty-three 15-minute intervals and two daily intervals.

To view performance monitoring configuration settings:


Step 1blank.gif In the Vision client, double-click the device on which DWDM is configured.

Step 2blank.gif In the Inventory window, choose Physical Inventory > Chassis and navigate to the interface configured for DWDM.

Step 3blank.gif In the content pane, select the performance monitoring configuration settings you want to view:

    • To view the performance monitoring 15-minute configuration settings, click PM 15-min Settings.
    • To view the performance monitoring 24-hour configuration settings, click PM 24-hour Settings.

The Client DWDM PM Settings Properties window is displayed as shown in Figure 16-4.

Figure 16-4 Client DWDM PM Settings Properties Window

 

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Table 16-4 describes the information displayed above the tabs in the Client DWDM PM Settings Properties window and in each of the tabs.

 

Table 16-4 Client DWDM PM Settings Properties Window and Tabs

Field
Description

Interval Type

The performance monitoring interval, either 15 minutes or 24 hours.

Location

Physical interface using the format rack / slot / module / port where:

  • rack is the chassis number of the rack.
  • slot is the physical slot number of the line card.
  • module is the module number. A physical layer interface module (PLIM) is always 0. Shared port adapters (SPAs) are referenced by their subslot number.
  • port is the physical port number of the interface.
FEC PM Settings Tab

Type

FEC performance monitoring parameter being tracked:

  • EC-BITS—The number of bit errors corrected (EC-BITS) in the DWDM trunk line during the performance monitoring time interval.
  • UC-WORDS—The number of uncorrectable words (UC-WORDS) detected in the DWDM trunk line during the performance monitoring time interval.

Threshold

Threshold for the performance monitoring parameter.

TCA

Whether TCA generation for the specified parameter on the DWDM controller is enabled or disabled.

Optics PM Settings Tab

Type

Optics performance monitoring parameter being tracked:

  • LBC—Laser bias current.
  • OPR—Optical power on the unidirectional port.
  • OPT—Transmit optical power in dBm.

Max Threshold

Maximum threshold configured for the parameter.

Max TCA

If enabled, indicates a TCA is generated if the value of the parameter exceeds the maximum threshold during the performance monitoring period. If disabled, TCAs are not generated if the maximum threshold is exceeded.

Min Threshold

Minimum threshold configured for the parameter.

Min TCA

If enabled, indicates a TCA is generated if the value of the parameter drops below the minimum threshold during the performance monitoring period. If disabled, TCAs are not generated if the value drops below the minimum threshold.

OTN PM Settings Tab

Type

OTN performance monitoring parameter being tracked:

  • bbe-pm-fe—Far-end path monitoring background block errors (BBE-PM). Indicates the number of background block errors recorded in the optical transport network (OTN) path during the performance monitoring time interval.
  • bbe-pm-ne—Near-end path monitoring background block errors (BBE-PM).
  • bbe-sm-fe—Far-end section monitoring background block errors (BBE-SM). Indicates the number of background block errors recorded in the OTN section during the performance monitoring time interval.
  • bbe-sm-ne—Near-end section monitoring background block errors (BBE-SM).
  • bber-pm-fe—Far-end path monitoring background block errors ratio (BBER-PM). Indicates the background block errors ratio recorded in the OTN path during the performance monitoring time interval.
  • bber-pm-ne—Near-end path monitoring background block errors ratio (BBER-PM).
  • bber-sm-fe—Far-end section monitoring background block errors ratio (BBER-SM). Indicates the background block errors ratio recorded in the OTN section during the performance monitoring time interval.
  • bber-sm-ne—Near-end section monitoring background block errors ratio (BBER-SM)
  • es-pm-fe—Far-end path monitoring errored seconds (ES-PM). Indicates the errored seconds recorded in the OTN path during the performance monitoring time interval.
  • es-pm-ne—Near-end path monitoring errored seconds (ES-PM).
  • es-sm-fe—Far-end section monitoring errored seconds (ES-SM). Indicates the errored seconds recorded in the OTN section during the performance monitoring time interval.
  • es-sm-ne—Near-end section monitoring errored seconds (ES-SM).
  • esr-pm-fe—Far-end path monitoring errored seconds ratio (ESR-PM). Indicates the errored seconds ratio recorded in the OTN path during the performance monitoring time interval.
  • esr-pm-ne—Near-end path monitoring errored seconds ratio (ESR-PM).
  • esr-sm-fe—Far-end section monitoring errored seconds ratio (ESR-SM). Indicates the errored seconds ratio recorded in the OTN section during the performance monitoring time interval.
  • esr-sm-ne—Near-end section monitoring errored seconds ratio (ESR-SM).
  • fc-pm-fe—Far-end path monitoring failure counts (FC-PM). Indicates the failure counts recorded in the OTN path during the performance monitoring time interval.
  • fc-pm-ne—Near-end path monitoring failure counts (FC-PM).
  • fc-sm-fe—Far-end section monitoring failure counts (FC-SM). Indicates the failure counts recorded in the OTN section during the performance monitoring time interval.
  • fc-sm-ne—Near-end section monitoring failure counts (FC-SM).

Type (cont.)

  • ses-pm-fe—Far-end path monitoring severely errored seconds (SES-PM). Indicates the severely errored seconds recorded in the OTN path during the performance monitoring time interval.
  • ses-pm-ne—Far-end path monitoring severely errored seconds (SES-PM).
  • ses-sm-fe—Far-end section monitoring severely errored seconds (SES-SM). Indicates the severely errored seconds recorded in the OTN section during the performance monitoring time interval.
  • ses-sm-ne—Near-end section monitoring severely errored seconds (SES-SM).
  • sesr-pm-fe—Far-end path monitoring severely errored seconds ratio (SESR-PM). Indicates the severely errored seconds ratio recorded in the OTN path during the performance monitoring time interval.
  • sesr-pm-ne—Near-end path monitoring severely errored seconds ratio (SESR-PM).
  • sesr-sm-fe—Far-end section monitoring severely errored seconds ratio (SESR-SM). Indicates the severely errored seconds ratio recorded in the OTN section during the performance monitoring time interval.
  • sesr-sm-ne—Near-end section monitoring severely errored seconds ratio (SESR-SM).
  • uas-pm-fe—Far-end path monitoring unavailable seconds (UAS-PM). Indicates the unavailable seconds recorded in the OTN path during the performance monitoring time interval.
  • uas-pm-ne—Near-end path monitoring unavailable seconds (UAS-PM).
  • uas-sm-fe—Far-end section monitoring unavailable seconds (UAS-SM). Indicates the unavailable seconds recorded in the OTN section during the performance monitoring time interval.
  • uas-sm-ne—Near-end section monitoring unavailable seconds (UAS-SM).

Threshold

Threshold configured for the parameter.

TCA

If enabled, indicates a TCA is generated if the value of the parameter crosses the threshold during the performance monitoring period. If disabled, TCAs are not generated if the value crosses the threshold.

Configuring and Viewing DWDM

The following commands can be launched from the inventory by right-clicking the appropriate node and choosing Commands > Configuration. Your permissions determine whether you can run these commands (see Permissions for Managing DWDM). To find out if a device supports these commands, see the Cisco Prime Network 5.2 Supported Cisco VNEs.

 

Command
Navigation
Input Required and Notes

Controller Data

Show >

N/A; performed from command launch point

PM History Data

PM interval type: 15-min or 24-hour

Interval number

RTPM Counters

PM interval type: 15-min or 24-hour

RTPM Threshold

PM interval type: 15-min or 24-hour

Wavelength Map

N/A; performed from command launch point

IM Trace Details

Card location (for example, 0/5/CPU0)

Device Log

N/A; performed from command launch point

Counters

Clear >

N/A; performed from command launch point

Channel

Configure >

Channel number

Option: Set or reset channel

FEC Mode

G.709 FEC mode: Disabled, enhanced, or standard

G.709 ODU

ODU alarm type: ais, bdi, lck, oci, ptim, or tim

Option: Enable or disable alarm type

G.709 OTU

OTU alarm type: bdi, fecmismatch, iae, lof, lom, los, sd-ber, sf-ber, or tim

Option: Enable or disable alarm type

G.709 TTI

Configure >

Optical channel unit type: ODU or OTU

TTI type: Expected or sent

TTI string type: ASCII or hex

TTI string

Option: Set or reset TTI string

G.709 Wrapper

Option: Disable or enable G.709 wrapper

Laser State

Laser state: Switch off or on

Loopback

Loopback value: Internal or line

Option: Set or remove

PM FEC Data

PM interval type

FEC alarm type:

  • Ec-bits—Bit errors corrected (BIEC); the number of bit errors corrected in the DWDM trunk line during the performance monitoring time interval
  • Uc-words—Uncorrectable words; the number of uncorrectable words detected in the DWDM trunk line during the performance monitoring time interval

TCA options: Enable or disable TCA generation

Threshold option. Set configures the value on the device; reset is the default. If you select blank, the threshold value is not used.

Threshold value

PM Optics Data

Configure >

PM interval: 15-min or 24-hour

Optics alarm type:

  • lbc—Laser bias current
  • opr—Optical power on the unidirectional port
  • opt—Transmit optical power in dBm

Maximum TCA option: Enable or disable

Maximum threshold option: Choosing Set configures the value on the device; Reset is the default. If you select blank, the threshold value is not used.

Maximum threshold

Minimum TCA option: enable or disable

Minimum threshold option: Choosing Set configures the value on the device; Reset is the default. If you select blank, the threshold value is not used.

Minimum threshold

PM OTN Data

PM interval: 15-min or 24-hour

OTN alarm type. For a list of types and their descriptions, see the OTN PN Settings Tab information in Table 16-4.

TCA option: Enable or disable

Threshold option: Choosing Set configures the value on the device; Reset is the default. If you select blank, the threshold value is not used.

Threshold value

Transmit Power

Transmit power in dBm

Option: Set or reset transponder Tx threshold

Rx LOS Threshold

Rx LOS threshold value

Option: Set or reset transponder Rx threshold