Limitations and deprecated features

This document describes the unsupported features, system limitations, and deprecated features in the NetScaler® 15.1 Tech Preview.

Unsupported NetScaler features

The following NetScaler features are not supported in this release:

• NextGen API
• Front End Optimization (FEO)
• Jumbo frames, except for the i40e and mlx drivers in PCI passthrough mode
• Autosave of the running configuration
• Tech support bundle collection path change
• IPsec protocol
• Layer 3 cluster
• Email OTP
• Link Aggregation Control Protocol (LACP) on NetScaler VPX™ for Linux running on ESXi or KVM
• BGP MD5 authentication

Unsupported NetScaler Console features

The following NetScaler Console features are not supported in this release:

• Telemetry status on the License Management page
• File integrity monitoring

System limitations

The following system limitations apply in this release:

• Preboot user data
• The what utility
• The nsapimgr call options are partially supported. For the supported nsapimgr call options, see FAQs.
• The maximum number of admin partitions supported is 250.

Boot failure after upgrade on Linux KVM

Note:

This workaround applies to Linux KVM only.

If the appliance does not boot after you upgrade to Linux, complete the following steps:

1. Power off the VM.

2. Check the CPU model. If it is set to qemu64 or kvm64, update the CPU model to host-passthrough:

   • Libvirt domain XML: <cpu mode='host-passthrough'/>
   • virt-install: --cpu host-passthrough
3. Power on the VM.

Deprecated features

The following features are deprecated in this release:

• Routing Information Protocol (RIP)
• Routing Information Protocol next generation (RIPng)
• Intermediate System to Intermediate System (IS-IS) protocol
• Precision Time Protocol (PTP)
• FTP
• Telnet