Skylight orchestrator 23.04 Release Notes
  • 19 Dec 2023
  • 16 Minutes to read
  • Contributors
  • Dark
  • PDF

Skylight orchestrator 23.04 Release Notes

  • Dark
  • PDF

Article Summary

Accedian is pleased to announce release 23.04 of Skylight orchestrator.

The following topics are covered in this document:

For more information, see the Skylight orchestrator Features/User Material section.

Accedian Technology Support

These release notes apply to the following Accedian products:

Product NameProduct IDSoftware VersionSoftware Files
Skylight orchestrator virtual appliance7NV-VMW23.04 GASO_v23.04_10_vm_core.ova

upgradeAppliance-SO_v23.04_10_package- prod.tar


Skylight orchestrator virtual appliance7NV-KVM23.04 GASO_ v23.04_10_vm_core. qcow2

upgradeAppliance-SO_v23.04_10_package- prod.tar


Skylight orchestrator docker7NV-DOC23.04

The following table lists key functionality of Accedian Skylight sensor elements, sensor control, modules, SFP compute and Flex 100 supported by Skylight orchestrator 23.04.

Supported in Skylight orchestrator Version 23.04



GT/GXLT/LXModulesSFP ComputeSensor controlFS & FS10GFSXFlex 100
Device Managementcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.png
Device Commissioningcheckmark.png*checkmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.png *
Metrics Collectioncheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.pngcheckmark.png
Performance Session Managementcheckmark.pngcheckmark.pngcheckmark.png

* CLI step support for Device Commissioning

Upgrade Paths

The upgrade to Skylight orchestrator version 23.04 requires that you are running a system with one of these previously-installed software versions:

  • Virtual appliance running 22.07 5K profile
  • Virtual appliance running 22.07 15K profile
  • Virtual appliance running 22.07 30K profile
  • Virtual appliance running 22.07 60K profile
  • Virtual appliance running 22.10 5K profile
  • Virtual appliance running 22.10 15K profile
  • Virtual appliance running 22.10 30K profile
  • Virtual appliance running 22.10 60K profile
  • Docker running 22.10 5K profile
  • Docker running 22.10 15K profile
  • Docker running 22.10 30K profile
  • Docker running 22.10 60K profile

Detailed procedures for upgrading to this release are provided in the article titled Upgrading Skylight orchestrator 23.04 for virtual appliance and Upgrading Skylight orchestrator Docker 23.04.

IMPORTANT: You cannot upgrade hardware appliances to version 23.04.

For customers running Skylight Director software on hardware appliances, a rehoming procedure is available that allows the transfer of the software and its configuration to a new virtual appliance.

Detailed procedures for rehoming on a virtual appliance are provided in the Installation/Deployment subcategory titled Virtual Appliance Rehoming.

New Features

Skylight orchestrator 23.04 introduces the following enhancements.

Network Partitioning

Skylight orchestrator 23.04’s network partitioning functionality allows you to create and configure a set of resources in the system that can then be identified as a partition. Once configured, you can assign users to this partition.


  • Admin level users will not have any partitioning restrictions.
  • If a user is not assigned to any partition, they will be granted full network visibility.
  • Users can be assigned to multiple partitions.

Note: Partitioning is not possible with modules. If modules are required to be part of different partitions, multiple Skylight sensor: controls must be deployed.

Licensing Enhancements

Enhancements to the Licensing tab include:

  • The key of 'Integrated Server' is enabled in 'License Server' by default and SDLS is disabled
  • Change license promptly from ‘Integrated Server' to 'SDLS’ and vice versa without import key
  • Does not need to restart app_server when applying 'Integrated Server' license to 'SDLS' and vice versa
  • For the upgrade, the previous Skylight orchestrator configuration is preserved

Feature Activation Key Removal

All functionality is added by default; importing Feature Activation Key in order to enable licensed functionality after installing or upgrading Skylight orchestrator is no longer required. The Feature Activation tab has been removed.

Note: The SNMP trap receiver option is Enabled on Skylight orchestrator by default with the preinstallation of SNMP feature key. SNMP trap receiver can be manually disabled in Admin ▶ SNMP.

Round-Trip Delay Values for Sessions

This release incorporates proper round-trip delay (RTD) values from TWAMP-stateful and TWAMP-stateless sessions, while preserving one-way loss, reorder reporting for stateful sessions.

These round-trip delay values are configurable on a per-session basis from Skylight orchestrator; Skylight analytics displays the additional performance metrics.

The following performance session types have RTD support:

  • ETH-DM
  • ETH-VS
  • 2xOneWay

Note: Skylight sensor: control releases prior to release 22.06 do not support this feature. If you intended to use this feature, please ensure you have upgraded to Skylight sensor: control release 22.06 or later.

Support for Skylight elements Password Length

Skylight orchestrator now supports devices with password lengths up to 128 characters.

Regarding Users Configuration Job:

  • When entering the maximum device password length of 128 characters, you can create and execute a user configuration job without issue.
  • If the password length surpasses 128 characters, the user configuration job cannot be executed.

Regarding device credentials:

  • When the maximum password length entered is 128 characters, the device’s credentials are successfully created. It is not possible to create nor edit credentials with password length surpassing 128 characters.

Skylight Flex 100 Service Creation Management

Skylight Flex 100 supports E-Line, E-LAN and E-Tree service types. This release introduces service management functionality in Skylight orchestrator, allowing the configuration of E Line service types through commissioning.

The following service types are supported:

  • EPL and EVPL services for Skylight Flex 100 to Skylight Flex 100
  • Skylight Flex 100 to third party gear configuration

Skylight orchestrator supports the definition of the services, the management of their lifecycle, and the ability to edit the services in bulk. These service definitions will be pushed to the Flex 100 devices for configuration into Flex 100 operations.

See Skylight Flex 100 Service Creation Management in Skylight orchestrator for more information.

Skylight Elements Compatibility

Skylight orchestrator 23.04 has been enhanced to be backward compatible with Skylight elements, including releases 7.9.5 and

Feature support includes:

  • SAT test with single flow at 10G
  • Password lengths up to 128 characters

Skylight sensor: control Compatibility

Skylight orchestrator has been enhanced to operate with Skylight sensor: control releases 22.12 and 22.12.1. Please note that Skylight orchestrator releases prior to release 23.04 are unable to provide RTT values for TWAMP and ETH-DM using Skylight sensor: control release 22.12 and 22.12.1.

If you intended to deploy Skylight sensor: control 22.12 to your network, please ensure you have upgraded to Skylight orchestrator release 23.04

See the Skylight sensor: control 22.12 Release Notes for more information.

Device Credential Enhancements

Skylight orchestrator 23.04 supports unpredictable credentials for usage by devices for SSH/SFTP/FTP authentication process.

Enhancements include:

  • Temporary credential for single use for one-time operations such as backup/restore and rehoming. When the operation is complete, the credentials cannot be used anymore.
  • Permanent credential for use in general operations such as SAT reporting.

SNMP Community Strings Enhancements

Concerning trap receivers, Skylight orchestrator 23.04 supports unpredictable, unique SNMP community strings for devices. The community string is set automatically.

Service Performance CRUD Support for NBAPI

Skylight orchestrator 23.04 adds CRUD (create, read, update, delete) support for SAT configurations in the NBAPI.

Deployment Considerations

Hypervisor Guidelines

Skylight orchestrator has been tested against KVM and VMware hypervisors. The following guidelines should be used when deploying to these environments:

  • The engineering guidelines of the product must be respected. The product ships with a minimal configuration that in most cases needs to be adjusted to meet the requirements stated in Deployment Profile Configuration. Failure to respect these engineering settings can lead to application downtime and possible data loss.
  • The product was designed assuming MAC addresses and UUIDs assigned on installation of the virtual appliance will persist for the lifetime of the virtual appliance. Licensing functions are tied to these identifiers and unexpected behavior can occur if they are changed. This is especially important when installing the virtual appliance in a cluster. These assignments must be static.
  • When using hypervisor functions that involve dynamic load balancing of guest virtual appliances in a hypervisor cluster (i.e. VMware DRS), the balancing policy should limit rebalancing operations to be done on virtual appliance startup and/or hypervisor host failures.
  • When the Skylight orchestrator VM is deployed on the KVM host, ensure to enable all ports after they are added to Skylight orchestrator.

Docker Environment Guidelines

The engineering guidelines of the product must be respected. The Docker host must meet the requirements stated in Skylight orchestrator Docker Deployment.

Failure to respect these engineering settings can lead to application downtime and possible data loss.

The Docker host configuration related to interface IP addresses, hostname, NTP server, additional disks (add, format, mount), is configured via standard command of Ubuntu without any procedure or script to support them.

Device Interoperability

The following section details the firmware releases that are known to interoperate with this release of Skylight orchestrator. Please refer to the Skylight orchestrator Administration documentation for a listing of supported functions for each firmware version.

Support for sensor element software releases 4.7.x, 5.4.x and 5.5.x is deprecated. Plans should be put in place to upgrade your performance elements to more recent versions.

For the releases mentioned below, support for maintenance releases is also included.

ProductSupported Releases
AT 1G Sensor Element1.2.1
AT 10G Sensor Elements2.1 -> 2.3
CE & NE Sensor Elements6.1.0.4 -> 6.4
GE Skylight Element4.9
GT Skylight Element7.1.2 ->
GX Skylight Element7.4 ->
LT Skylight Element7.1.2 ->
LX Skylight Element7.9.5.1
Skylight VCX2.5, 2.7 -> 19.07
Skylight sensor: control19.12 -> 22.12.1
Skylight Flex 10022.01.3
TE Sensor Element6.1.0.4-> 6.4
Velocity FS1.0 and 1.1
Velocity FSX2.1 and 2.2

Note: Support for Classic Actuator has been removed.

ESXi Support

Skylight orchestrator release 20.05 and later will not support ESXi hypervisors running release 5.5 and 6.0. Systems running ESXi 6.5 can be upgraded to release 20.05 and later. ESXi 7.0 is supported for release 22.10 and later.

HTTP Interface

The HTTP interface of Skylight orchestrator is no longer supported for GUI operations. HTTP operations are still supported for the REST and XML APIs, but web service clients are urged to switch to the more secure HTTPS protocol.

Customers using browsers with HTTP protocol on port 6080 will automatically be redirected to HTTPS protocol on the same port (6080). This means no firewall changes are required as part of this change.

Disk Sizing for New Installations

The default image size for Skylight orchestrator is now 150 GiB. This image is large enough to support small networks of under 100 network elements and 1,000 performance sessions. For larger networks, the disk size of the image must be increased. This can be achieved via VMware and KVM management tools.

Example disk sizing:

  • For 5,000 elements and 20,000 performance sessions: 370 GiB is recommended
  • For 52,000 performance sessions: 482 GiB is recommended

Please consult the Skylight orchestrator Administration documentation for sizing guidelines and for procedures on how to increase the disk size.

IPv4 Addresses for Hot Standby

The hot standby feature requires the use of IPv4 addresses for its configuration. For planning purposes, it should also be noted that hot standby configuration requires three (3) distinct subnets for the management, data replication, and heartbeat functions.

IPv6 addresses can be used in addition to these IPv4 interfaces for connectivity to the application interfaces (web and REST APIs) and devices being managed. IPv4 addresses are only required strictly for the hot standby functions.

If you wish to make use of this feature, please contact your Solution Engineering representative to initiate network planning activities.

XML Interface Deprecated

The XML interface is deprecated and will be phased out in future releases. It is still available in this release, but northbound systems are urged to migrate to the CSV file format for PM data reception.

Manager Module Interoperability

Conflicts will arise if both Manager Module and Skylight orchestrator are configured to manage the same Skylight sensor: control. Skylight orchestrator will effectively take over all management of the performance sessions for the Skylight sensor: control, and leave the Manager Module with un-acquired supervision endpoint.

Using this release to add Manager Modules as managed elements is not recommended.

Manager API

The performance session management calls defined at the /nbapi REST endpoint were introduced in SDV 1.6 to duplicate the calls present in the Skylight Director Manager Module. This endpoint was preserved in a backwards compatible fashion to allow REST API clients of the Manager Module to seamlessly switch to the Skylight orchestrator.

This endpoint is to be considered capped. Any new features pertaining to performance session management will be implemented using the /nbapiemswsweb REST endpoint in future releases.

CLI Additions and Changes

The CLI command set of the appliance monitor interface was enhanced to duplicate the mgr-commands that are present in the SkyLIGHT Director Manager module.

These commands were preserved in a backwards compatible fashion to allow customers familiar with the Manager Module command set to migrate to the Skylight orchestrator.

This command set is to be considered capped; no new features will be developed on the CLI functionality.

Performance Session Licensing

Skylight Performance sessions are licensed objects. In order to configure such sessions, Skylight orchestrator must be configured to access a License Server. Accedian recommends using Skylight orchestrator License Server release or higher.

Licensing alarms have been added for the following scenarios:

  • License Server connectivity loss
    • Raised when connectivity checks to the SDLS are unsuccessful
  • License about to expire
    • Raised seven days before license expiration
  • License Exceeded condition
    • Raised when more sessions are configured than what is available on the license server

Note: Although the ability to support session licensing using SDLS for session enforcement is available, there is also the option for no session enforcement.

Please refer to the Skylight orchestrator article titled Licensing for instructions on configuring connectivity to a license server.

Browser Support Limitations

The minimum recommended screen resolution to operate Skylight orchestrator is 1360 x 768. Lower resolutions will not provide an optimal experience.

Performing a zoom on your display is not recommended due to incompatible implementations with browsers. If a zoom must be applied, please use a Firefox browser as it has the most standard support for this function.

Due to issues with browser compatibility mode and web sockets, Internet Explorer is no longer supported. Please use Google Chrome (version 70 or higher) or Firefox (version 50 or higher) to access the Skylight orchestrator web interface.

For Windows users, it is also recommended to leave the scale and layout option of the Display settings at a value of 100%.

Restoring Virtual Appliance Configuration Backups

Configuration backups of the virtual appliance (done via the configuration export command) are not portable from release to release. That is to say, a configuration backup from a 1.6 system should not be used to restore a 19.12 system. Unexpected behavior may occur.

Please ensure that configuration backups are restored on systems running the same release from which the backup was taken.

Metrics Collection CSV Filename Timestamp

In order to align with the CSV filename convention of all other Accedian products (Skylight sensor: control and Skylight elements), this naming strategy is changed in Skylight orchestrator. The timestamp in the CSV filename represents the time when the file was created.

In all cases, the timestamps of the metrics themselves (present within the content of the file) represent the time of when the metric was produced. Only the timestamp contained in the CSV filename is impacted by this change.

Vision Collect Streaming Limitations on and 6.4.2

When using release firmware with Vision Collect, a disconnection from Skylight orchestrator may incur data loss. The data retention periods are not respected and data loss can occur after a few seconds of disconnection.

When using firmware release 6.4.2 in Skylight elements in high resolution mode with packet loss greater than 10% of the management network, some reporting periods may be lost. Please ensure a reliable management network is in place.

These issues are corrected in Skylight element firmware releases 6.4.3 and higher.

The First Result Records for a New Session Are Skipped by CSV Export

When the CSV producer detects a new performance session, it marks its data for extract from the first time it views the session. If the CSV producer is configured to run every five (5) minutes, this can mean that the first five minutes of result data for a new session will not be exported.

This is expected behavior; all performance data after this initial detection phase will be captured by the CSV producer.

Number of Acceptable Firmware Loads

Before upgrading or starting app_server on Skylight orchestrator, you must validate the number of acceptable firmware loads based on the specific profile of the system and upgrade version.

For new installation of Skylight orchestrator 22.10 and later, it must not be higher than the limitations shown below.

Skylight orchestrator ProfileAcceptable Firmware Loads
60K profile system2 sensor: control or 10 performance element loads
30K profile system4 sensor: control or 20 performance element loads
15K profile system8 sensor: control or 40 performance element loads
5K profile system24 sensor: control or 120 performance element loads

For Skylight orchestrator 22.10 (upgrade from previous releases), Skylight orchestrator 22.07 or prior, it must not be higher than the limitations shown below.

Skylight orchestrator ProfileAcceptable Firmware Loads
60K profile system1 sensor: control or 5 performance element loads
30K profile system2 sensor: control or 10 performance element loads
15K profile system4 sensor: control or 20 performance element loads
5K profile system12 sensor: control or 60 performance element loads

Note: When the requirements from the table above are met, the upgrade can be performed and the system will restart. After the system restarts, the partition can be checked. The partition must have at least 1 GB of free space remaining.

vMotion Support Limitations

VMWare’s vMotion feature, technology that enables live migration of a virtual appliance from one physical server to another, has certain limitations when used with Skylight orchestrator:

  • vMotion should be configured static; no load balancing
  • MAC preservation
  • Cannot be used in conjunction with Skylight orchestrator HA or standby protection
  • If using VSAN disk shared between many hosts, ensure disk IOPs of Skylight orchestrator will meet the minimum requirement.

Result Records for Sync Sessions Are Not Exported in Real Time

Sync sessions are not properly aligned with CSV export. Results are not being exported in real time as Skylight sensor: control is delivering measurement results and Skylight orchestrator is generating CSV files at the exact same time.

If the CSV producer is configured to run every five (5) minutes and sync session has five (5) minute interval, this can indicate that result data for that session will be exported five minutes late.

Memory Limitations

In the event of an excessive number of simultaneous commands being executed, it is recommended that JVM memory be increased.

FTP Support

Support for the FTP transfer method has been removed for the functions below:

  • CSV export
  • Inventory export

Please ensure the FTP export method is not used on Inventory Export and CSV Export before upgrading.

Detailed procedures for upgrading to Skylight orchestrator 23.04 are provided in Upgrading Skylight orchestrator 23.04.

Skylight orchestrator 23.04 Lifecycle

This section lists the planned lifecycle dates of this software release. See the table below outlining the following milestones:

General AvailabilityDate where the product is available for general field deployment for both new installations and upgrades.2023-04-27
End of Security SupportDate where security patches will no longer be delivered for this release. Any correctives for security defects required after this date will be delivered using the next major release of the software.Next Major Release
Last Time Buy / Last Time ShipDate where this release can no longer be purchased from Accedian.2024-04-27
End of Product SupportDate where functional patches will no longer be delivered for this release. Any correctives for functional defects required after this date will be delivered using the next major release of the software.2024-04-27
End of Technical SupportDate where technical assistance is no longer available from the Accedian Technical Assistance Center for this release.2028-04-27

© 2024 Accedian Networks Inc. All rights reserved. Accedian®, Accedian Networks®,  the Accedian logo™, Skylight™, Skylight Interceptor™ and per-packet intel™, are trademarks or registered trademarks of Accedian Networks Inc. To view a list of Accedian trademarks visit: 

Was this article helpful?

Changing your password will log you out immediately. Use the new password to log back in.
First name must have atleast 2 characters. Numbers and special characters are not allowed.
Last name must have atleast 1 characters. Numbers and special characters are not allowed.
Enter a valid email
Enter a valid password
Your profile has been successfully updated.