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Packet Tracer is a cross-platform visual simulation tool designed by Cisco Systems that allows users to create network topologies and imitate modern computer networks. The software allows users to simulate the configuration of Cisco routers and switches using a simulated command line interface.
8 EGP Exterior Gateway Protocol: RFC 888: 0x09 9 IGP Interior gateway protocol (any private interior gateway, for example Cisco's IGRP) 0x0A 10 BBN-RCC-MON BBN RCC Monitoring 0x0B 11 NVP-II Network Voice Protocol: RFC 741: 0x0C 12 PUP Xerox PUP: 0x0D 13 ARGUS ARGUS 0x0E 14 EMCON EMCON 0x0F 15 XNET Cross Net Debugger IEN 158 [2] 0x10 16 CHAOS ...
In practice, only the IP Precedence part of the field was ever used outside US DoD networks: the higher the value of the IP Precedence field, the higher the priority of the IP packet. Some US DoD networks did use the delay bit for route selection between oceanic cable paths and Satellite Communication (SATCOM) paths when both paths existed.
By multiplying a 24-bit value with the factor of 256 (effectively bit-shifting it 8 bits to the left), the value is extended into 32 bits, and vice versa. This way, redistributing information between EIGRP and IGRP involves simply dividing or multiplying the metric value by a factor of 256, which is done automatically.
X.25 is an ITU-T standard protocol suite for packet-switched data communication in wide area networks (WAN). It was originally defined by the International Telegraph and Telephone Consultative Committee (CCITT, now ITU-T) in a series of drafts and finalized in a publication known as The Orange Book in 1976.
Zero-configuration networking (zeroconf) is a set of technologies that automatically creates a usable computer network based on the Internet Protocol Suite (TCP/IP) when computers or network peripherals are interconnected. It does not require manual operator intervention or special configuration servers.
C (1 bit) Checksum bit. Set to 1 if a checksum is present. R (1 bit) Routing Bit. Set to 1 if Routing and Offset information are present. K (1 bit) Key bit. Set to 1 if a key is present. S (1 bit) Sequence number bit. Set to 1 if a sequence number is present. s (1 bit) Strict source route bit. Recur (3 bits) Recursion control bits. Flags (5 bits)
Carrier Routing System (CRS) is a modular and distributed core router developed by Cisco Systems Inc that enables service providers to deliver data, voice, and video services over a scalable IP Next-Generation Network (NGN) infrastructure. In a network topology, these routers are generally positioned in the core or edge of a service provider ...