Question : How to determine type of router based on MAC Address?

I am looking for an RFC or for resources with identifying the manufacturer and type of router (e.g. wireless) based on the MAC address.

I've tried http://www.coffer.com/ and know the basic structure of how a MAC address is based but any further information would be appreciated.

Answer : How to determine type of router based on MAC Address?

Assuming that it is a network you are responsible for, you could use nmap (www.insecure.org/nmap/) to help you identify the device.

for example:
C:\Program Files\nmap>nmap -O 192.168.1.1

Starting nmap 3.70 ( http://www.insecure.org/nmap ) at 2004-12-15 15:13 Central
Standard Time
Interesting ports on somedevice.here.com (192.168.1.1):
(The 1659 ports scanned but not shown below are in state: closed)
PORT   STATE SERVICE
23/tcp open  telnet
MAC Address: 00:0A:F4:AA:7B:80 (Cisco Systems)
Device type: router
Running: Cisco IOS 12.X
OS details: Cisco router running IOS 12.1.5-12.2.13a

Nmap run completed -- 1 IP address (1 host up) scanned in 5.828 seconds