New Features and Enhancements:

1. For compliance with California state law, the default "password" must be changed when you log into the switch for the first time.
2. To configure SNMPv3, Authentication Protocol must be configured as MD5 or SHA. The 'none' option for Authentication Protocol is no longer allowed.
3. Changed the default setting of the Smart Control Center (SCC) management from enabled to disabled. Note: SCC Utility can still discover the switch.

Bug Fixes:

1. There is no rejection or warning when adding a new ACL rule beyond the maximum number of rules that the system can handle. The new rule simply disappears after a system reboot.

Known Issues:

1. SFP+ model AXM765 cannot be used as a 10G stacking. Workaround: Use other SFP+ models instead, including the AXM761, AXM762, or AXM763; or DAC cable with the AXC761 or AXC763.

Installation Notes:

Since release 6.6.4.7, firmware 6.6.4.x enables M4300-12X12F and M4300-24X to mix-stack with S3300 series of Smart Switches.

Below are special notes and restrictions when stacking these two series of switches. These are the same contents as in the release notes of 6.6.4.7.

1.   M4300-12X12F/M4300-24X (thereafter referred to as M4300) and S3300 series have separate 6.6.4.x images to support this mixed stacking.

• Before these switches can be stacked together, each series need to be upgraded to their respective 6.6.4.x images.
• To load 6.6.4.x image onto M4300 unit running with firmware version older than 12.0.2.17, M4300 needs to be upgraded to 12.0.2.17 or newer version first.
• Once a M4300 unit is running with 6.6.4 image, it can be brought back to M4300 family by directly downloading and activating a 12.0.0.x/12.0.2.x image into it.

For the detailed procedures regarding M4300/S3300 firmware upgrading, please refer to section "Smart M4300/S3300 Firmware Upgrade Procedure" in S3300 User Manual (page 356~359) of 6.6.4.x firmware.

2.   On the two M4300 models, maximum 4 10G ports (any 4 from below 8 available ports) can be configured as stacking ports.

• M4300-24X: port 17~24
• M4300-12X12F: port 9~12 and port 21~24       

3.   M4300 with 6.6.4.x image scales down to S3300 feature set to become part of the stacking.

• AVB will not be available even in Standalone mode on M4300.
• All stacking functionalities of S3300 extend to these two M4300 platforms. However, NSF (Non-Stop Forwarding) is not be supported.
• Either S3300 or M4300 can be stack master or standby.
• CLI under console port is not supported.
• Service port is not supported for management or any other purpose.

4. New features for M4300 running smart 6.6.4.x image.

• SCC (Smart Control Center) can be used to discover the smart M4300 and do some basic settings; just same as that can be done on S3300.
• Reset button on front panel of M4300 models can be used to factory default the unit.
  • When the reset button is pressed for 2~5 seconds, the switch will simply reset (reload);
  • When the reset button is pressed for over 5 seconds, the switch will got for factory default (clear all configuration followed by reload).

Known issues

• SFP+ model AXM765 cannot be used as 10G stacking.

[Workaround]: Use other SFP+ models AXM761, AXM762, AXM763 or DAC cable AXC761/AXC763 instead.