C3945E-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 C3945E-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 C3945E-AX
Is the Cisco C3945E-AX still supported?
No. Cisco's last date of support for C3945E-AX was Dec 2022 (per the Cisco EOL bulletin). It is past end of service life.
When did the C3945E-AX reach end of sale?
C3945E-AX reached end of sale Dec 2017, per the Cisco EOL bulletin.
What is the last date of support (EOSL) for the C3945E-AX?
Dec 2022, per the Cisco EOL bulletin.
What is the replacement for the C3945E-AX?
Cisco's end-of-life bulletin lists ISR4451-X-AX as the replacement for C3945E-AX.
Can the C3945E-AX be maintained after Cisco support ends?
After the last date of support, C3945E-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.