C3945-AX
ISR 3900 Series: router
Lifecycle position
Options from here
Keep it in production past the OEM cutoff with an independent maintainer.
Buy spares now, while units still circulate on the secondary market. eBay listings for C3945-AX ↗
It is unsupported today. Set a migration timeline and budget.
Low-criticality role: document the risk, harden backups, retire on your terms.
Other SKUs in 3900 Series
Questions about C3945-AX
Is the Cisco C3945-AX still supported?
No. Cisco's last date of support for C3945-AX was Dec 2022 (per the Cisco EOL bulletin). It is past end of service life.
When did the C3945-AX reach end of sale?
C3945-AX reached end of sale Dec 2017, per the Cisco EOL bulletin.
What is the last date of support (EOSL) for the C3945-AX?
Dec 2022, per the Cisco EOL bulletin.
What is the replacement for the C3945-AX?
Cisco's end-of-life bulletin lists ISR4431-AX as the replacement for C3945-AX.
Can the C3945-AX be maintained after Cisco support ends?
After the last date of support, C3945-AX units can often be kept in production through third-party maintenance providers. Cisco no longer issues software fixes, support, or hardware replacement for it.