RIP (RoutingInformationProtocols, industrial LTE router routing information protocol) is the most widely used distance vector protocol developed by Xerox in the 1970s. RIP is a part of the XNS (XeroxNetworkService, Xerox Network Service) protocol suite. The RIP version of TCP/IP is an improved version of the Xerox protocol. The biggest characteristic of RIP is that the realization principle and configuration method are very simple. RIP calculates routes based on hop counts and periodically sends updates to neighbors' industrial LTE routers.
The OSPF protocol was developed in the late 1980s and became an industry standard in the early 1990s, and is a typical link state protocol. The main features of OSPF include: support for VLSM (variable-length subnet mask), fast convergence, and low bandwidth occupancy. The OSPF protocol exchanges link state information between neighbors so that industrial 3G routers can build a link state database (LSD). Subsequently, the industrial 3G router calculates the routing table of the entire industrial network according to the information in the database, and its path selection is mainly based on bandwidth.
IGRP is a proprietary protocol of the entire industrial network router, which is only implemented in 4G industrial routers. It also belongs to the distance vector class of protocols and thus has many things in common with dual router RIP, such as broadcast updates. The biggest difference from RIP is the measurement method, load balancing, etc.
IGRP supports multi-path weighted load balancing, so that the network bandwidth can be used more reasonably. In addition, while RIP only uses hop count as the basis for measurement, IGRP for dual-card routers uses a series of parameters, including bandwidth, delay, load, reliability, MTU (maximum transmission unit) and other parameters.
EIGRP is an enhanced version of IGRP and is also a proprietary routing protocol for industrial routers on the entire network. EIGRP adopts a diffusion update algorithm, which is similar to the distance vector algorithm to a certain extent, but has a short convergence time and strong operability. As an extension of IGRP, EIGRP supports multiple routing protocols such as IP, IPX, and ApleTalk. EIGRP can also connect smoothly with IGRP when operating in an IP environment because their measurement methods are consistent.
