Why NetBEUI is faster than TCP/IP running in a network?

The NetBEUI is a non-routable protocol. What does it mean?

Please give me help! Thanks!
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1.) NetBEUI is the native protokol for windows=> Less overhead => faster (but only in a windows network)

2.) It can be routed out of the network. You can't connect 2 different networks by using NetBEUI

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IBM first introduced the NetBIOS Extended User Interface (NetBEUI) protocol specification in 1985. It is optimized for departmental LANs or LAN segments. The Windows NT NetBEUI Frame (NBF) transport driver implements the IBM NetBEUI 3.0 specification, and is completely compatible with the NetBEUI shipped with past Microsoft networking products. NBF implements NBFP, and therefore requires no NetBIOS compatibility layer.

NetBEUI uses a single part naming scheme, and therefore has no facility for differentiating between multiple interconnected networks. NetBEUI is NOT routable, and therefore has no impact on router broadcasts.

NetBeui is faster for numerous reasons but for the most part is to to the lack of overhead that TCP/IP has. Netbeui doesn't support error-free transmission or flow control so it's packets are smaller and it doesn't have to worry about checking to make sure everything was sent properly.

In general usage, the term TCP/IP refers to a suite of protocols that includes TCP, UDP, IP, ICMP, and ARP. Since TCP/IP is available for many diverse operating systems such as UNIX, MVS, VM, VMS, NetWare and OS/2, Windows NT can use TCP/IP to communicate with these different operating systems. TCP/IP also provides compatibility with the global Internet. TCP/IP is Microsoft's strategic protocol for scaleable Windows-based networking.
The Windows NT TCP/IP transport driver includes TCP, UDP, IP, ICMP, ARP and NBT. Microsoft completely redesigned the TCP/IP transport driver in Windows NT 3.5, providing many enhancements over the Streams based TCP/IP transport driver in Windows NT 3.1. The NetBIOS compatibility layer for TCP/IP is NetBIOS over TCP/IP (NetBT in Windows NT 3.5; NBT in Windows NT 3.1).

NetBEUI is a proprietary specification owned by IBM. However, IBM makes this specification available to developers.

 TCP/IP is an open specification. Anyone can easily obtain RFCs for implementing the TCP/IP protocols. Anyone can also submit RFCs to the Internet Engineering Task Force (IETF) for consideration.

TCP/IP uses a multi part naming scheme that allows very large multi location networks to be logically segmented into multiple levels of subnets. Network administrators can use the network ID component of the IP address in conjunction with a subnet mask to configure and manage subnetworks within subnetworks. IP uses subnetworks to logically segment large networks into separate, smaller interconnected subnetworks.

TCP/IP packets are routeable by third-party routers that use RIP, IGPs such as Cisco Systems' Interior Gateway Routing Protocol (IGRP), or IETF's Open Shortest Path First (OSPF) protocol, even though Windows NT itself does not understand these protocols. However, if MPR is installed, Windows NT uses RIP. You may configure Windows NT as a static TCP/IP router by checking the Enable IP Routing check box in Control Panel. Dynamic routing must be implemented with third party routers.

There will be a pop quiz in the morning ;)

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