LCOS SX Release

New power for your switches

The operating system for R&S®LANCOM Switches - the LCOS SX - continuously receives innovative new features and improvements due to our in-house development. This guarantees that your internal networking is always state-of-the-art! Download the right SX version for your device now and benefit from new features and improvements.

Download of the current version

You will find the current LCOS SX release version as well as all active predecessor releases in our download portal. Simply enter your desired product and download the software free of charge!

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Feature highlights

LCOS SX 5.30 RU2 features

For switches of the CS and YS series

Various bug fixes and product improvements

LCOS SX 5.20 RU12 bugfixing

For switches of the XS-6000, XS-5000, and XS/GS-4500 series

The stability of R&S®LMC communication has been improved. After a restart or crash of the SNMP interface, invalid parameters are no longer transmitted to the LMC, ensuring that rollouts can still be performed.
The processing of static routing entries during R&S®LMC rollouts has been optimized. This prevents high CPU utilization, process terminations, and the loss of routing entries.
Fixed an issue that caused R&S®LMC rollouts to fail when DNS server addresses contained a "9" (IPv4) or an "f" (IPv6) in the last octet.
Compatibility of R&S®LANCOM SFP-DAC40-1M/-3M cables with GS-/XS-45xx switches and Unified Firewalls equipped with the UF Extension Module 2x40G QSFP+ has been improved.
Distribution of PoE schedule profiles within GS-45xx stacks has been corrected. The PoE scheduler now functions as intended on stack members as well.
CPU utilization on the XS-4530YUP and XS-4554YUP has been reduced by improving the efficiency of link LED control.

LCOS SX 4.30 RU7 features & bugfixes

For switches of the XS-3500, GS-3600, GS-3500, GS-3200, IGS-3000, and GS-2400 series as well as GS-3152(P/X/XP/XSP) and GS-3126(X/XP)

Zero-touch capability in pure IPv6 networks via DHCPv6 Option 17
Addition of voice attribute configuration via RADIUS
Logging of accounting data for 802.1x authentication events
Addition of a query option for TACACS+ server status via CLI
Integration of the LANCOM GS-3152P (EOS since March 2023)

LCOS SX 3.34 RU11 bugfixes

For R&S®LANCOM Switches GS-2326P+, GS-2326+, GS-2310P+, GS-2310,
GS-2328F

Resolution of a possible reboot during DNS resolutions while experiencing connection issues to the R&S®LMC
Correction of the display of the default IP address after DHCP lease expiration on LMC-managed switches
Fix for the calculation of the SNMP engine time, restoring proper SNMP walk functionality after long uptime periods

Information on the lifecycle management

Lifecycle policies

With Rohde & Schwarz Networks and Cybersecurity, you have a manufacturer at your side that ensures strong investment protection and reliable long-term planning for your infrastructure through transparent lifecycle policies.

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Firmware status

Keep track of the current software maintenance status of all operating systems with the version overview. It clearly distinguishes between the different versions and provides recommendations for their deployment.

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Release process

Our aim is the optimal preparation of our operating systems and other software for its use in practice. This is why we enter into active dialog with our customers even during the development phase as part of our release procedure.

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Note for LCOS SX download

Before upgrading your device to a new firmware it is essential to backup your device’s configuration. Due to extensive features it is not possible to downgrade to a previous firmware without using the backup configuration. Never disconnect the device from power supply while updating the firmware. In this case the device won’t start again.

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