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Juniper Networks · EX Series Ethernet switches (access)

Juniper EX3300 end of life

The Juniper EX3300 reached End of Support on 30 June 2024, the date listed for every EX3300 SKU on Juniper's EX Series Hardware Dates & Milestones page: the 24T, 24P, 24T-DC, 48T, 48T-BF and 48P and their -TAA versions. The EX3300 is a 1U access switch whose four uplinks take SFP and SFP+ optics and which stacks up to ten units in a Virtual Chassis, and those two features shape both the maintenance contract and the refresh decision set out below.

EX3300 support dates

Every row names its basis. A third-party tracker date is not the vendor’s own, and “not published” means exactly that.
MilestoneDateBasisSource
EOL Announced (all EX3300 SKUs; joint EX2200/EX3300/EX4200/EX4500/EX4550 bulletin)1 February 2019Vendor-publishedThis row is in Juniper's historical milestone table. It links to the bulletin 'End of Life Announcement: EX2200, EX3300, EX4200, EX4500 and EX4550 Related Products', which needs a Juniper login.EX Series Hardware Dates & Milestones - Juniper Networks (last updated 30 July 2026)
Last Order (EX3300 SKUs)30 June 2019Vendor-publishedEX Series Hardware Dates & Milestones - Juniper Networks (last updated 30 July 2026)
Last Date to Convert Warranty (EX3300 SKUs)30 June 2020Vendor-publishedEX Series Hardware Dates & Milestones - Juniper Networks (last updated 30 July 2026)
Same Day Support Discontinued / Next Day Support Discontinued (EX3300 SKUs)30 June 2024Vendor-publishedBoth columns show 06/30/2024.EX Series Hardware Dates & Milestones - Juniper Networks (last updated 30 July 2026)
End of Support (EX3300 SKUs)30 June 2024Vendor-publishedEX Series Hardware Dates & Milestones - Juniper Networks (last updated 30 July 2026)

Where the EX3300 stands today

End of Support is the last step in a sequence that began with a joint end-of-life bulletin covering the EX2200, EX3300, EX4200, EX4500 and EX4550; the bulletin itself is login-only. According to Juniper's historical milestone table, EOL was announced on 1 February 2019, Last Order followed on 30 June 2019, and the Last Date to Convert Warranty fell on 30 June 2020. The Same Day and Next Day Support Discontinued columns both read 30 June 2024, so in Juniper's table the faster support levels ended on the same day as End of Support rather than earlier.

Juniper dates the EX3300 per SKU, so no serial-number lookup is involved: the show chassis hardware command gives the chassis model, and on Juniper's EX Series Hardware Dates & Milestones page every EX3300 SKU, from the 24T to the 48T-BF, sits in a single row with End of Support on 30 June 2024. That row is not EX3300-only. It also lists EX2200, EX4200 and EX4550 SKUs, an EX4500 rack-mount kit and the EX-RPS-PWR redundant-power accessories, so an RPS unit feeding an EX3300 stack is past End of Support as well, dated in that row as an accessory in its own right.

EX3300: lifecycle on one axis
EX3300 lifecycle timeline20192020202120222023202420252026202720282029Checked 8 Oct 20261 Feb 2019EOL Announced (all EX3300SKUs; jointEX2200/EX3300/EX4200/EX4500/EX4550bulletin)30 Jun 2019Last Order (EX3300 SKUs)30 Jun 2020Last Date to ConvertWarranty (EX3300 SKUs)30 Jun 2024Same Day SupportDiscontinued / Next DaySupport Discontinued(EX3300 SKUs); End ofSupport (EX3300 SKUs)
Dated milestones are placed only where a source gives the date; Blue = vendor-published, amber = third-party tracker, violet = derived from a vendor policy. Checked 8 October 2026.
Finding the date for your own unit

Juniper publishes dates per SKU, not per serial number. Find your chassis model (for example with 'show chassis hardware') on https://support.juniper.net/support/eol/product/ex_series/. All EX3300 SKUs are in one row with End of Support 2024-06-30.

What still works after Juniper Networks support ends

Juniper's EOL policy describes End of Support as the final date for maintenance support, which it spells out as access to Juniper's support engineers, its online tools, software releases and replacement hardware. The November 2025 Care service description then sets out what follows: Juniper has no obligation to provide any kind of support service for the hardware concerned or for the embedded operating system software that supports it. For EX3300 owners that has been the position since 30 June 2024.

Software is the first practical gap. The Junos OS Software Installation and Upgrade Guide (published 8 September 2026) lists a service contract and an access account as requirements for downloading Junos OS from Juniper's site. Juniper's Junos OS dates page also says that 'for a number of EX Series products' it pushed Junos OS 12.3 and 15.1 End of Engineering out to 30 June 2022 and End of Support out to 30 June 2024, and it sends readers to each product's EOL announcement for the exact timeline. The second of those dates is the same as the EX3300's hardware End of Support. Hardware cover from that point on is the territory of network third-party maintenance.

  • Juniper's Care service description (Nov 2025) says that after End of Support Juniper is under no obligation to provide support services of any kind for the affected hardware or for the embedded operating system software supporting it. (support.juniper.net)
  • Juniper's EOL policy defines End of Support as the last date to receive maintenance support, meaning access to Juniper technical support engineers, software releases, online tools and hardware replacement. (support.juniper.net)
  • To download Junos OS from Juniper's download site you need a service contract and an access account (Junos OS Software Installation and Upgrade Guide, published 2026-09-08). (juniper.net)

What a maintenance contract needs to cover on the EX3300

The EX3300 is a 1U (1.75 in.) switch with 24 or 48 10/100/1000BASE-T ports and four autosensing uplinks that accept SFP and SFP+ transceivers. Out of the box, uplink ports 2 and 3 are Virtual Chassis ports and ports 0 and 1 are network ports, and a Virtual Chassis can hold up to ten EX3300s, so uplink optics can double as stacking links. A maintenance schedule should list those optics and note any ports changed from the defaults, so an engineer swapping a member knows how it was cabled.

Power, PoE and airflow vary by SKU. The EX3300-24P has a 405 W maximum system PoE budget and the EX3300-48P 740 W, both delivering IEEE 802.3at PoE+ at up to 30 W per port on all network ports. Power comes from a built-in supply at the rear, fed through an AC inlet or a DC terminal block, with a Redundant Power System port alongside. Airflow is front-to-back except on the EX3300-48T-BF, which runs back-to-front, so a spare has to match the airflow direction of the rack it goes into. Hardware break-fix support for an EX3300 estate should name each of these variants rather than a generic model.

EX3300: what to tell a maintenance provider
EX3300 hardware factsJUNIPER NETWORKS · EX SERIES ETHERNET SWITCHES(ACCESS)EX3300Past the vendor’s last date ofsupportFORM FACTOR1U: chassis height 1.75 in. (4.45 cm).Source: EX3300 Switch Hardware Guide, fileex3300.pdf inside Juniper's EX Series DocsArchive zip.ACCESS PORTS24 or 48 built-in 10/100/1000BASE-T portsUPLINKSFour autosensing uplink ports that take SFPand SFP+ transceivers. Ports 2 and 3 areVirtual Chassis ports by default; ports 0and 1 are network ports by default.POE+ BUDGETMaximum system PoE power: 405 W on theEX3300-24P, 740 W on the EX3300-48P. Thesemodels deliver IEEE 802.3at PoE+ at up to30 W per port on all network ports.STACKINGVirtual Chassis of up to 10 EX3300 switchesPOWER / AIRFLOWBuilt-in power supply at the rear, with anAC inlet or DC terminal block, plus aRedundant Power System (RPS) port. Airflowis front-to-back, except the EX3300-48T-BF,which is back-to-front.6 sourced specification facts · checked 8 October 2026
The hardware facts a maintenance quote is priced on, printed in the vendor's own wording from its specification documents (cited in Sources). Nothing on this plate is estimated; facts the vendor does not state are left off rather than filled in.
EX3300 hardware, from Juniper Networks’s own specification documents
SpecificationDetailSource
Form factor1U: chassis height 1.75 in. (4.45 cm). Source: EX3300 Switch Hardware Guide, file ex3300.pdf inside Juniper's EX Series Docs Archive zip.juniper.net
Access ports24 or 48 built-in 10/100/1000BASE-T portsjuniper.net
UplinksFour autosensing uplink ports that take SFP and SFP+ transceivers. Ports 2 and 3 are Virtual Chassis ports by default; ports 0 and 1 are network ports by default.juniper.net
PoE+ budgetMaximum system PoE power: 405 W on the EX3300-24P, 740 W on the EX3300-48P. These models deliver IEEE 802.3at PoE+ at up to 30 W per port on all network ports.juniper.net
StackingVirtual Chassis of up to 10 EX3300 switchesjuniper.net
Power / airflowBuilt-in power supply at the rear, with an AC inlet or DC terminal block, plus a Redundant Power System (RPS) port. Airflow is front-to-back, except the EX3300-48T-BF, which is back-to-front.juniper.net

Extend or refresh the EX3300?

Keeping EX3300s on hardware maintenance is a reasonable bridge where a stack is stable, its configuration is settled and the segment it serves is protected at other layers. SFP+ uplinks and budgets of up to 740 W of PoE+ may still meet a site's needs, and break-fix cover is aimed at the failures that matter in a settled stack: a member switch or an optic.

Refresh moves up the list wherever you need ongoing Junos fixes, because under Juniper's EOL policy the EX3300's End of Support on 30 June 2024 was also the last date for its software releases. The next model in the same line, the EX3400, has its own position to check: Juniper's EX Series EOL tables, last updated on 30 July 2026, list no EX3400 switch SKU, and the only EX3400 entries there are B-EX3400-...-3S-E Sky Enterprise SaaS bundle SKUs, which reached End of Support on 20 November 2024. Those entries are SaaS bundles rather than switch hardware, so confirm EX3400 availability directly before planning around it, and use the server and network end-of-life checker for the rest of the estate.

  • Juniper's Junos OS dates page says Junos OS 12.3 and 15.1 had End of Engineering extended to 30 June 2022 and End of Support extended to 30 June 2024 'for a number of EX Series products'. It refers readers to each product's EOL announcement. 30 June 2024 is also the EX3300 hardware End of Support date. (support.juniper.net)
  • No EX3400 switch SKU, the obvious next generation, appears in Juniper's EX Series EOL tables (last updated 30 July 2026). The only EX3400 entries are B-EX3400-...-3S-E Sky Enterprise SaaS bundle SKUs, which reached End of Support 2024-11-20. (support.juniper.net)
  • The same EOL row lists EX2200, EX4200 and EX4550 SKUs, an EX4500 rack-mount kit and shared EX-RPS-PWR redundant-power accessories, all past End of Support on 2024-06-30. (support.juniper.net)
EX3300: what came before and what replaces it
EX3300 product lineageEX3300Release date not sourcedPast the last date of supportEX3400 (inferred nextgeneration)Next model in the same lineJuniper Networks · EX Series Ethernet switches (access)
The successor shown is the next model in the same product line; the vendor notice does not name a direct replacement. No predecessor is shown because none could be sourced.

Keep your EX3300 covered

Tell us how many you run and when your current cover ends, and we will come back with a like-for-like maintenance quote for that estate. Your model and its support status are attached to the enquiry automatically, so there is nothing to re-type.

Juniper Networks maintenance in detail →

The EX2200 (incl. EX2200-C) end of life page is the nearest match: the EX3300's row in Juniper's table also carries EX2200, EX4200 and EX4550 SKUs, all past End of Support on 30 June 2024, so a comms room running both families works to one set of Juniper dates. For Juniper switches outside that shared row, see the EX4600 and QFX5100 pages; the SRX300 Series page is the group's firewall entry.

Where the EX3300 sits against related models
EX3300: end of support passed 2.3 years ago (30 June 2024, the vendor’s date).20202021202220232024202520262027202820292030203120322033EX3300release not sourcedEX2200release not sourcedJuniper EX2300release not sourcedJuniper EX3400release not sourcedJuniper EX4300release not sourcedEX4600release not sourcedQFX5100release not sourcedTodayEX3300: end of support passed 2.3 years ago (30 June 2024, the vendor’s date).
Each bar runs from release to the milestone that marks end of support for the model as a whole. Amber bars end on a third-party tracker's date, not the vendor's. A dashed open end means no end date is published — not that support is indefinite. Component and accessory dates (a management controller, a power module) are not treated as the model's.

Look up another model in the server & network end-of-life checker, or read what third-party maintenance covers.

Questions people ask about the EX3300

Is the Juniper EX3300 end of life?

Yes. Juniper's EOL announcement for the EX3300 dates from 1 February 2019; ordering closed on 30 June 2019 and End of Support followed on 30 June 2024, according to its EX Series Hardware Dates & Milestones page. Every EX3300 SKU, including the DC, back-to-front airflow and -TAA versions, carries those dates.

When did Juniper stop supporting the EX3300-48P?

On 30 June 2024, the End of Support date Juniper lists for all EX3300 SKUs, the 48P included. The Same Day and Next Day columns in Juniper's table show that date as well, so there was no earlier cut-off for faster service.

Can I still get Junos OS updates for an EX3300?

The EX3300's End of Support on 30 June 2024 was, under Juniper's EOL policy, the last date for maintenance support, which includes software releases, and Juniper's Care terms say that after End of Support it has no obligation to support the embedded operating system software. Downloading Junos OS from Juniper's site also needs a service contract and an access account, so confirm with Juniper what your account can still reach before scheduling an upgrade.

What is the next model after the EX3300?

The EX3400 is the next model in the same line. Juniper's EX Series EOL tables, last updated on 30 July 2026, show no EX3400 switch SKU; the only EX3400 entries are Sky Enterprise SaaS bundle SKUs. Juniper's EX3300 bulletin is login-only, so no Juniper-named replacement is given here.

Can an EX3300 Virtual Chassis go on third-party maintenance?

Switches whose vendor support has ended are a common case for third-party maintenance, which generally covers fault diagnosis, replacement parts and engineer visits. Describe the stack member by member, with each SKU, the uplink optics and any EX-RPS-PWR units, and request a quote through the maintenance coverage builder.

Sources

Every date, rule and specification above was checked against these on 8 October 2026 by an independent verification pass. Vendors revise lifecycle notices; this page is re-checked by 8 January 2027.

  1. EX Series Hardware Dates & Milestones - Juniper Networks (last updated 30 July 2026) — support.juniper.net
  2. support.juniper.net — support.juniper.net
  3. support.juniper.net — support.juniper.net
  4. juniper.net — juniper.net
  5. juniper.net — juniper.net
  6. support.juniper.net — support.juniper.net
  7. juniper.net — juniper.net

Last reviewed 7 October 2026. Lifecycle dates for the EX3300 are re-verified against Juniper Networks's own notices at each review; a date a vendor has not published is never filled in.