What's New in this Document

The following table describes the changes to this guide for the Extreme 9920 software, release 21.2.1.0.

Table 1. Summary of changes

Feature	Description	Link
400G Line Card Support	Extreme 9920 software supports 400G speed on the line card.	Limitations Line Card Configure Line Card

For more information about this release, see the Extreme 9920 Software Release Notes, 21.2.1.0 .