What's New in this Document

The following table describes changes to this guide for the Extreme 9920 software, release 21.1.2.0.

Table 1. Summary of changes

Feature	Description	Link
Link Aggregation Control Protocol (LACP)	LACP enables devices to send Link Aggregation Control Protocol Data Units (LACPDUs) to each other and establish link aggregation connections.	Link Aggregation Control Protocol Dynamic LAG Configure Dynamic LAG
Link Layer Discovery Protocol (LLDP)	Link Layer Discovery Protocol (LLDP) allows network devices to advertise their identity and capabilities to peer devices on a LAN and store information about the network.	Link Layer Discovery Protocol Configure LLDP
Quality of Service (QoS)	Quality of Service (QoS) provides preferential treatment to specific traffic that is received on multiple ingress interfaces or Test Access Points (TAPs).	Quality of Service Configure a Quality of Service
IPv6 GRE tunnel termination	IPv6 GRE tunnel termination is supported.	Tunnel Termination Terminate Transport Tunnels Filter Message Header
Multiprotocol Label Switching (MPLS) outer header termination	MPLS packets without outer VLAN tag or 802.1BR/VN tag are terminated if there is a matching configuration present in the ingress-group.	Outer MPLS Header Tunnel Termination Terminate Transport Tunnels Filter Message Header

For more information about this release, see the Extreme 9920 Software Release Notes, 21.1.2.0 .