""Priscilla Oppenheimer"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > hktco wrote: > > > > When I learned it for CCNA and CCNP, I was told that IGRP is > > Cisco > > proprietary. Until recent, I was being told that IGRP is no > > longer > > proprietary > > and became an open standard. > > No, neither IGRP nor EIGRP are open standards. They are Cisco proprietary. > There are no RFCs or other industry-standard specifications that document > the protocols.
CL: at one time there was such a thing as IOS-IGRP. This was apparently an IGRP cversion created to the ISO CLNS specifications. One can still see the remnats of this on Cisco routers: Router_10(config)#router ? bgp Border Gateway Protocol (BGP) egp Exterior Gateway Protocol (EGP) eigrp Enhanced Interior Gateway Routing Protocol (EIGRP) igrp Interior Gateway Routing Protocol (IGRP) isis ISO IS-IS > > > > > iso-igrp IGRP for OSI networks NOTE THIS ONE mobile Mobile routes odr On Demand stub Routes ospf Open Shortest Path First (OSPF) rip Routing Information Protocol (RIP) static Static routes I don't believe I have ever seen any documentation on this version on CCO > > With IGRP, Cisco did allow Rutgers University to publish a good article that > explains everything you need to know about IGRP. See here: > > http://www.cisco.com/warp/public/103/5.html > > With EIGRP, it would be much harder to figure out exactly how it all works > unless you were a Cisco IOS software developer. But Cisco TAC does have some > good Web pages about EIGRP. See here: > > http://www.cisco.com/warp/public/103/eigrp-toc.html > > So... with these documents, theoretically another company could gather > enough info to implement IGRP and EIGRP. But legally Cisco wouldn't allow > this without some sort of licensing agreement. Cisco owns the technology, in > other words. The protocols are proprietary, even though Cisco doesn't seem > opposed to publishing info on how they work. Cisco's motivation for > publishing info is to help network admins use Cisco's implementations, not > help a competitor (or even a collaborator) do their own implementation. > > _______________________________ > > Priscilla Oppenheimer > www.troubleshootingnetworks.com > www.priscilla.com > > > > > I would like to verify on this. Any input from authority would > > be nice. > > Thanks. > > > > hktco Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=57730&t=57603 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
