The 9920 Release Notes for version 21.2.2.0 details key updates,
feature enhancements, known limitations, and defect resolutions for the 9920 platform.
Significant additions include load balance with masking options, packet capture enhancements,
VXLAN and MPLS outer encapsulation, new health check commands in supportsave. Known limitations
include issues like GRE tunnel encapsulation failing to support MPLS packets, SNMP
linkUp/linkDown traps being generated during system upgrades, overwriting of mirror sessions
and packet capture, and 100G-DR, FR optical transmissions. Resolved defects include LC7 failing
to initialize after upgrading to version 21.1.2.7, LAG aggregation messages for state
notifications not sent to forwarding services, NPB not sending syslogs to syslog server after
XCO upgrade. This release is critical for network administrators optimizing 9920 systems,
addressing functionality and improving operational stability.
