Could someone explain which routing protocols(RIP,EIGRP,OSPF,BGP) work on which OSI layer and why?Please also confirm whether all routing protocols run on all Cisco switches?

Question:

I know BGP runs on Application Cisco 3560X Price  layer but what about other routing protocols? Please also explain which routing protocol doesn't run on Cisco switches?

If possible, explain otherwise request to provide some good URL from which I get the relevant information.

Answer:

BGP uses TCP as the underlying transport protocol and RIP uses UDP as the underlying transport protocol, however, it doesn't mean that they are on Transport layer on the OSI model.

Similar to SMTP (email), it is also on Application layer, however, it uses the underlying Transport layer (TCP/25).

For 3550 switch, please find the following configuration guide on the latest version for routing protocols supported on 3550 switch:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/12.2_44_se/configuration/guide/swiprout.html

It supports all RIP, OSPF, Cisco 3560X  EIGRP and BGP.