NebulaFlex Switch CX4800 Series - V2.00 Patch 1 Firmware Release
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Zyxel_Melen
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Zyxel Employee
Zyxel Employee
Zyxel Switch CX4800 Series Release Note
March 2026
FaOS Firmware Version on all models
(Click Hyperlink to download the firmware directly)
Zyxel CX4800-56F - V2.00(ACJN.1)C0
New Feature and Enhancements
1. Enlarge Multicast group from 1K to 4K.
2. Support querier flooding GSQ to all VLAN member ports when receiving IGMP leave.
Bug Fix
C=Cloud mode, S=Standalone mode
| Bug fix | C | S |
| 1. [eITS#260100478] Fixed non-querier send GSQ after receiving IGMP leave | V | V |
| 2. [eITS#251002070] [eITS#260100247] Fixed an issue where IP and password synchronization could fail after backup takeover in cloud stacking with static IP configured. | V | - |
| 3. [eITS#260200499] Fixed an issue that CX4800-56F stacking channel could disconnect. | V | V |
| 4. In stacking mode, the switch may crash during a master failover (master down) if it is processing more than 900 IGMP groups simultaneously. | V | V |
Please refer to the Download Link for more details.
Zyxel Melen
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