Home
Skip to content
Skip to footer
Worldwide [change]
Log In
Account
Register
My Cisco
Cisco.com Worldwide Home
Products & Services
(menu)
Support
(menu)
How to Buy
(menu)
Training & Events
(menu)
Partners
(menu)
Guest
Search
Products & Services
Cisco IOS and NX-OS Software
Cisco IOS
End-of-Sale and End-of-Life Products
Cisco IOS Software Releases 12.1 T
Cisco IOS Software Release 12.1(5)T1
NOTE: This product is no longer being sold and might not be supported.
View the End-of-Life Notice to learn:
End-of-sale and end-of-life dates
What replacement products are available
Information about product support
Contact Cisco
Chat Now
Contact Us
Chat live with a Cisco representative
Cisco:
Welcome to Cisco!
How can I help you?
No Thanks
Chat Now
Email Us
|
Request a Price
Find a Local Reseller
Call 1 800 553 6387
US/CAN
|
5am-5pm PT
Other Countries
Support
Download Software
for this Product
Tweet
Information For
Small Business
Midsize Business
Service Provider
Industries
Marketplace
Contacts
Contact Cisco
Meet our Partners
Find a Reseller
News & Alerts
Newsroom
Blogs
Field Notices
Security Advisories
Technology Trends
Cloud
Internet of Things (IoT)
Software Defined Networking (SDN)
Support
Downloads
Documentation
Communities
DevNet
Learning Network
Support Community
Video Portal
About Cisco
Investor Relations
Corporate Social Responsibility
Environmental Sustainability
Trust and Transparency Center
There's Never Been A Better Time
Careers
Search Jobs
We Are Cisco
Programs
Cisco Designated VIP Program
Cisco Powered
Financing Options