Cisco has a few proprietary protocols, though many of them have been standardized, or adapted into emerging standards. The most popular Cisco proprietary protocol that hasn't been adopted as a standard is probably EIGRP. bit.ly/1OMvbZW
No router eigrp <AS #> No router ospf <process ID> No router bgp <AS #> No router rip
EIGRP is a Cisco proprietary routing protocol and therefore can only be used with Cisco routers.You can do route redistribution on Cisco routers, this allows you to take routes from another routing protocol (such as OSPF or RIP) and place them into the EIGRP network that way downstream nodes can be informed of routes available.
RIPv2 and EIGRP
show ip eigrp neighborsw
Open standard protocols: Rip or OSPF. They are not Cisco proprietary protocols.
An autonomous system is a group of networks under the same management domain using an interior gateway protocol such as OSPF. Internetworking with Cisco and Microsoft Technologies pg. 308 Interior gateway protocols: IGRP, RIP, OSPF, EIGRP Internetworking with Cisco and Microsoft Technologies pg.295-296
EIGRP
this is a cisco propreitory protocol is not available for rfc
Routing protocols are used by routers (RIP, EIGRP, OSPF) Routed protocols are the actual protocols on the wire (TCP/IP)
Most modern routing protocols send information about the network mask. In the Cisco Academy, we learn about several protocols that do, and don't, include information about the network mask; those who don't do so, don't allow VLSM (subnets of different sizes).RIP v.1: NoRIP v.2: YesIGRP: No (marked as "obsolete" in the new version of the Cisco curriculum)EIGRP: YesOSPF: YesIS-IS: Yes (I believe so; we don't study this in detail)Most modern routing protocols send information about the network mask. In the Cisco Academy, we learn about several protocols that do, and don't, include information about the network mask; those who don't do so, don't allow VLSM (subnets of different sizes).RIP v.1: NoRIP v.2: YesIGRP: No (marked as "obsolete" in the new version of the Cisco curriculum)EIGRP: YesOSPF: YesIS-IS: Yes (I believe so; we don't study this in detail)Most modern routing protocols send information about the network mask. In the Cisco Academy, we learn about several protocols that do, and don't, include information about the network mask; those who don't do so, don't allow VLSM (subnets of different sizes).RIP v.1: NoRIP v.2: YesIGRP: No (marked as "obsolete" in the new version of the Cisco curriculum)EIGRP: YesOSPF: YesIS-IS: Yes (I believe so; we don't study this in detail)Most modern routing protocols send information about the network mask. In the Cisco Academy, we learn about several protocols that do, and don't, include information about the network mask; those who don't do so, don't allow VLSM (subnets of different sizes).RIP v.1: NoRIP v.2: YesIGRP: No (marked as "obsolete" in the new version of the Cisco curriculum)EIGRP: YesOSPF: YesIS-IS: Yes (I believe so; we don't study this in detail)
EIGRP (Enhanced IGRP) has replaced IGRP. With the way EIGRP is set up as a protocol it is possible to implement a newer router that only supports EIGRP into a network that is running IGRP. Honestly network admins should be pushing for EIGRP if they are still on IGRP as for many features and advantages EIGRP has over IGRP. Directly from Cisco.com: "Enhanced IGRP provides compatibility and seamless interoperation with IGRP routers. An automatic-redistribution mechanism allows IGRP routes to be imported into Enhanced IGRP, and vice versa, so it is possible to add Enhanced IGRP gradually into an existing IGRP network." EIGRP:Enhanced Interior Gateway Routing Protocol IGRP: Interior Gateway Routing Protocol *IGRP and EIGRP are both Cisco proprietary routing protocols.