Q: Is this file compatible with Cisco 2801?
Yes, as long as you have enough flash and DRAM. The "nm" in the filename indicates support for network modules, which includes the 2801.
Q: Can I use this file on a 2821?
Yes, the entire 2800 series (2811, 2821, 2851, 2801) uses this unified image.
Q: Does this IOS require a reboot?
Yes. The router will reboot during the upgrade process. Schedule maintenance downtime. C2800nm-adventerprisek9-mz.151-4.m12a.bin Download
Q: Where can I find the MD5 checksum for this file?
On the Cisco download page, next to the file, click "Show Details" to see the official checksums.
Q: What is the difference between “adventerprisek9” and “ipbasek9”?
ipbasek9 is a smaller image (only IP routing + basic security). adventerprisek9 includes advanced features: MPLS, L2TPv3, WebVPN, advanced QoS, and voice gateways. C2800nm-adventerprisek9-mz
If you are running an outdated IOS (like 12.4), upgrading to 15.1(4)M12a brings several critical improvements:
adventerprisek9)This is the maximum feature license for the 2800 series. It includes: Why Do You Need This Specific IOS
| Category | Features | | :--- | :--- | | Security | IOS Firewall, IPS/IDS, IPsec VPN (3DES/AES), SSL VPN, DMVPN, GETVPN | | Voice | CallManager Express (CME), Survivable Remote Site Telephony (SRST), Voice Gateway (H.323, MGCP, SIP) | | Routing | BGP, OSPF, EIGRP, RIP, IS-IS, MPLS, L2VPN, VRF-Lite | | QoS & Management | CBWFQ, LLQ, NBAR, NetFlow, SNMPv3, SSHv2 |