# Switch Firmware 2.1p Released!

**URL:** <https://forum.alta.inc/t/switch-firmware-2-1p-released/3968>\
**Category:** Switches\
**Tags:** firmware\
**Created:** [December 17, 2024, 11:17pm UTC](https://forum.alta.inc/t/switch-firmware-2-1p-released/3968 "2024-12-17T23:17:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Alta-MikeD](https://forum.alta.inc/user_avatar/forum.alta.inc/alta-miked/32/1942_2.png) [@Alta-MikeD](https://forum.alta.inc/u/Alta-MikeD)\
**Post date:** [December 17, 2024, 11:17pm UTC](https://forum.alta.inc/t/switch-firmware-2-1p-released/3968/1 "2024-12-17T23:17:18Z")

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We’ve released new firmware for our switches, featuring the following improvements:

- Improve memory utilization.
- Resolve issues with IGMP snooping leave messages.
- Resolve issues with IPv6 multicast groups when more than a few VLANs are configured.

**This update is being rolled out now.** You can manually initiate the upgrade if you’d like, or it will automatically update overnight (if auto-updates are enabled). The complete, up-to-date changelog is available here:

> [@Switch - Release Notes](https://forum.alta.inc/t/switch-release-notes/839#p-2555-h-21p-release-notes-1):
>
> Thanks for all of your feedback helping improve the Alta products! 2.3n Released on 12/11/2025 Add support for learning Device IP addresses using ARP requests in addition to responses. Resolve issue with DHCP guard when gateway MAC changes. 2.3m Released on 12/03/2025 Improve handling of potentially incorrect network settings. 2.3k Released on 11/11/2025 Improve overall system stability. Improve IGMP snooping support on S48-APOE/S12. 2.3j Released on 10/24/2025 Resolve issues with in…

As always, if you have questions or encounter any issues, feel free to reply here or start a new topic. Please include details about the issue so we can assist you effectively.

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**Author:** ![system](https://forum.alta.inc/uploads/default/original/1X/087669c3d7c0a6495087b41d6f385a6771f2231c.png) [@system](https://forum.alta.inc/u/system)\
**Post date:** [January 12, 2026, 4:27pm UTC](https://forum.alta.inc/t/switch-firmware-2-1p-released/3968/2 "2026-01-12T16:27:10Z")

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Closed on January 12, 2026, 4:27pm UTC

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