Limitations and deprecated features

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

Unsupported NetScaler features

The following NetScaler features are not supported in this release:

• NextGen API
• Front End Optimization (FEO)
• Autosave of the running configuration
• IPsec protocol
• Layer 3 cluster
• Link Aggregation Control Protocol (LACP) on NetScaler VPX™ for Linux running on ESXi or KVM
• The maximum number of admin partitions supported is 250
• Integrated Caching
• Jumbo frame support is unavailable on the following drivers: igb, ixgbe, netvsc, af_packet, and ena.

System limitations

The following system limitations apply in this release:

• Preboot user data for GCP
• The nsapimgr call options are partially supported. For the supported nsapimgr call options, see FAQs.
• The what utility

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)
• File Transfer Protocol (FTP)
• Telnet