In linguistics and grammar, a pronoun is a word that substitutes for a noun or noun phrase. It is a particular case of a pro-form.
IP Routing is an umbrella term for the set of protocols that determine the path that data follows in order to travel across multiple networks from its source to its destination. Data is routed from its source to its destination through a series of routers, and across multiple networks.
2.1 Integrated IS-IS Intra-Domain IS-IS Routing Protocol, which may be used as an interior gateway,protocol (IGP) to support TCP/IP as well as OSI. This allows a single routingprotocol to be used to support pure IP environments, pure OSI environments, anddual environments.