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Router · Switch hardware

C921-4P

Isr 880 Series —

EOSL — PAST
28 mo
past end of service life

Lifecycle position

now
availableend of saleservice
Available—
End of saleFeb 2019
End of serviceFeb 2024Cisco bulletin ↗
Last security firmwareSW maintenance ended 2020-02

Options from here

Third-party maintenance

Covered past the OEM cutoff by an independent maintainer.

Pre-stock spares

Modules and units still circulate on the secondary market.

Schedule migration

Carrying production traffic? Set the replacement window now, not mid-outage.

Run to failure

Low-criticality role — document the risk, harden backups, retire on your terms.

Other SKUs in 880 Series

C881-V-K9›C1111-4P›C1121-4P›C1121-4PLTEP›C931-4P›

C921-4P — questions

Is the Cisco C921-4P still supported?

No. Cisco's last date of support for C921-4P was Feb 2024 (per the Cisco EOL bulletin) — it is past end of service life.

When did the C921-4P reach end of sale?

C921-4P reached end of sale Feb 2019, per the Cisco EOL bulletin.

What is the last date of support (EOSL) for the C921-4P?

Feb 2024 — per the Cisco EOL bulletin.

Can the C921-4P be maintained after Cisco support ends?

After the last date of support, C921-4P units can often be kept in production through third-party maintenance providers. Cisco no longer issues software fixes, support, or hardware replacement for it.