Extreme Networks 100Base-FX A4 Switches Replacement — What Extreme Networks Recommends
Extreme Networks support for the Extreme Networks 100Base-FX A4 Switches ended Jun 2022. Unsupported units need a plan. Extreme Networks's own end-of-life bulletin names the successor below — quoted from the source, with the successor's live support status where EOSL.ai tracks it.
The Extreme Networks-named replacement
per-part mapping in the bulletin (4 replacements listed) — named in the Extreme Networks EOL bulletin ↗ as the migration path.
X440-G2-24fx-GE4 is not yet tracked on EOSL.ai — no vendor end-of-life notice has been captured for it, which is typical of current products.
Extreme Networks 100Base-FX A4 Switches lifecycle dates
| SKU group | End of sale | EOSL / last support | Source |
|---|---|---|---|
| 100Base-FX A4 Switches | Jun 2017 | Jun 2022 | bulletin ↗ |
Per-part-number replacement mapping (2)
As listed in the Extreme Networks bulletin's migration table for each part number.
| End-of-life part | Description | Bulletin-listed replacement |
|---|---|---|
| A4H124-24FX | 100Base-FX A4 Switches | X440-G2-24fx-GE4 / X440-G2-12t8fx-GE4 / 16539 / 16540 |
| A4H254-8F8T | 100Base-FX A4 Switches | X440-G2-24fx-GE4 / X440-G2-12t8fx-GE4 / 16539 / 16540 |
Migration questions
What is the replacement for the Extreme Networks 100Base-FX A4 Switches?
Extreme Networks's end-of-life bulletin names X440-G2-24fx-GE4 as the recommended migration path for the Extreme Networks 100Base-FX A4 Switches. The exact wording and any per-part-number mapping are in the linked bulletin.
Is the Extreme Networks 100Base-FX A4 Switches end of life?
Extreme Networks support for the Extreme Networks 100Base-FX A4 Switches ended Jun 2022. Unsupported units need a plan. Full lifecycle dates by part number: https://eosl.ai/system/extreme-100base-fx-a4-switches/.
Is there a per-part-number replacement mapping for the 100Base-FX A4 Switches?
Yes — the bulletin maps replacements at the part-number level for 2 SKUs (for example A4H124-24FX → X440-G2-24fx-GE4 / X440-G2-12t8fx-GE4 / 16539 / 16540). The full table is on this page.
Do I have to buy the Extreme Networks-recommended replacement?
No. The bulletin's named successor is Extreme Networks's suggested path, not an obligation. Teams also keep 100Base-FX A4 Switches units running under third-party maintenance after the support cutoff, migrate to a different vendor, or run low-criticality units to failure with the risk documented. See the support-options guide for the trade-offs.