What's New in this Document

The following table describes changes to this guide for the Extreme 9920 software, release 21.1.1.0.

Table 1. Summary of changes
Feature	Description	Link
IPv6 support	IPv6 support is added for the following features: GNMI SNMP NTP DNS Config File Management Support SSH TACACS+ Certificates Firmware Operation and System Service Update SysLog Ping and Traceroute	SNMP Monitoring Apply Configuration Network Time Protocol gRPC API Gateway
SNMPv3 support	SNMP v3 Get and GetNext requests ensure data encryption.	SNMP Monitoring
Outer VXLAN header support	All VXLAN packets without outer VLAN tag are processed as transport tunnel packets and the VXLAN headers are terminated.	Outer VXLAN Header Support Terminate Transport Tunnels Terminate Non-Transport Tunnels Filter Message Header
Packet mirroring	The whole VXLAN frames can be mirrored to another egress port.	Packet Mirroring Enable Mirror Configuration Terminate Transport Tunnels Terminate Non-Transport Tunnels Filter Message Header
USB support	Extreme 9920 supports USB storage devices.	Managing Files

For more information about this release, see the Extreme 9920 Software Release Notes, 21.1.1.0 .