Security Fixes:

• Various security vulnerability fixes and enhancements.

Known Issues:

• When the FW is upgraded to v6.6.4.28 and the switch is rebooted, sometimes the switch does not complete the boot-up process, and the power LED remains yellow.
  Workaround: Manually power down XSM4324S and XSM4324CS and then power it on again (power cycle)
• SFP+ model AXM765 does not support 10G stacking.
  Workaround: Use other SFP+ models instead, including the AXM761, AXM762, or AXM763; or use a DAC cable with the AXC761 or AXC763.

Firmware Update Instructions:

Firmware version 6.6.4.7 and above enables you to mix-stack the M4300-12X12F and M4300-24X with the S3300 series of Smart Switches.

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

1.   M4300-12X12F, M4300-24X (hereafter referred to collectively as M4300) and the S3300 series have separate 6.6.4.x images to support mixed stacking.

• Before these switches can be stacked together, each series needs to be upgraded to their respective 6.6.4.x images.
• To load the 6.6.4.x image onto a M4300 unit with firmware version older than 12.0.2.17, first you must update the M4300 to version 12.0.2.17 or newer.
• When a M4300 switch is using the 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.

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

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

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

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

• AVB is not available on the M4300, even in Standalone mode.
• All stacking functionalities of the S3300 extend to these two M4300 platforms. However, Non-Stop Forwarding (NSF) is not supported.
• CLI under console port is not supported.
• Either S3300 or M4300 can be stack master or standby.
• 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; same as the S3300.
• The reset button on the front panel of the M4300 models provides 2 ways to restore the switch to default settings.
  • When the reset button is pressed for 2~5 seconds, the switch simply resets and reloads its current settings;
  • When the reset button is pressed for over 5 seconds, the switch is reset to factory default settings (clears the current settings and then reloads the factory default settings).

Download Link: https://www.downloads.netgear.com/files/GDC/M4300/XSM4324S_XSM4324CS_V6.6.4.28.zip