Cisco ISR 4451 end of service life: November 30, 2028.
Cisco ISR 4451 reaches end of service life on November 30, 2028. After that Cisco stops selling support contracts. Third-party maintenance covers it for 3 to 5+ years past that date.
- 2028-11-30
- Cisco EOSL date
- 2 years left
- Status today
- 3 to 5+ yrs
- Post-EOSL coverage with us
- 40 to 70%
- Below the Cisco contract
Free. No credit card. No sales call unless you ask.
What changes at EOSL
The ISR 4451 keeps working. Cisco just stops answering.
End of service life is the date Cisco stops selling support contracts for the ISR 4451. It is a commercial decision, not a technical one. The network still runs, its failure modes are well documented, and spares are available on the secondary market.
We keep ISR 4451 spares in stock and support the platform for 3 to 5+ years past November 30, 2028 with in-house L3+ engineers 24/7/365, a 4-hour on-site SLA, and month-to-month terms. Most customers use that window to refresh on their own schedule instead of Cisco's.
EoS 2023-11-07; EOL14896
Data center hardware that loses OEM support in 2028 →
Source: Cisco's own lifecycle record. View source Dates can change. Confirm for your serial numbers before you plan around it.
ISR 4451 hit EOSL? That is when we start.
Send the serial numbers. A priced comparison against the last OEM renewal comes back within one business hour.