User's Manual

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Chapter 55 Routing Protocol overview
55.1 IP Routing Protocol
The router of the Company implements multiple IP dynamic routing protocol. They will be introduced in the
description of each potocol in this Chapter.
IP routing protocols are classified into two categories: interior gateway router protocol (IGP) and exterior
gateway router protocol (EGP). The routers of our Company support RIP, OSPF, BGP and BEIGRP. RIP、
OSPF、BGP and BEIGRP can be configured separately on real needs. The router of our company supports
simultaneous configuration of multiple routing protocol, including unlimited OSPF ( if memory is sufficient)
processes, a BGP process, a RIP progress and unlimited BEIGRP processes. Command “redistribute” can be
used to inject other router protocols into the database of current routing protocol so that the multiple routing
protocols can be associated.
In order to configure IP dynamic routing protocol, the corresponding process shall be started and the
corresponding network interfaces and the specific dynamic routing process should be associated, to indicate
on which interfaces where the routing process run. To this end, the relevant steps for configuration shall be
referred to in the corresponding document of configuration commands.
55.2 Choosing Routing Protocol
The choice of routing protocol is a complicated process. When choosing a routing protocol, the following factors
shall be taken into account:
 The size and complexity of the network
 Whether the support for VLSM is needed
 Network traffic
 Security requirement
 Reliability requirement
 Policy
 Others
The subject will not be detailed here. It is noted that the chosen routing protocol shall meet the real condition
of network and comply with your requirements.
55.2.1 Interior Gateway Router Protocol
Interior Gateway Routing Protocol is used for the network in a single autonomous system. All the IP interior
gateway routing protocol shall be associated with some specific networks (such as configuring: network) when
it is launched. Each routing process listens to update messages from other routers on the network and
broadcasts its own routing information on the network at the same time. The inside gateway router protocol
supported by the router of the Company includes:
 RIP
 OSPF