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Topic: IGRP

Related Topics

Routing

EIGRP

Routing Information Protocol

BGP

Exterior Gateway Protocol

Generic Routing Encapsulation

IPsec

Mask (computing)

Subnetwork

EGP

L2TPv3

Raelites

Ahinadab

Dimona

Subnet

	Cisco - An Introduction to IGRP
		IGRP is a protocol that allows a number of gateways to coordinate their routing.
		Unlike IGRP, where every path is described by a delay, bandwidth, etc., in RIP it is described by a number from 1 to 15.
		Periodically IGRP scans all the candidate default routes and chooses the one with the lowest metric as the actual default route.
	www.eng.fsu.edu /~tsai/download/IGRP.htm (10945 words)

	IGRP Concepts
		IGRP also gives more importance to bandwidth as a metric, which allows it to select faster links which may have a higher hop counts over slower links with fewer hop counts.
		IGRP also sends "flash updates" to send updates sooner than the standard update period to notify other routers of a metric change on a route.
		IGRP also has a maximum hop count of 255, much higher than the 15 hops allowed by RIP, although by default it is set to 100, and in practice is usually set much lower.
	roxanne.roxanne.org /~kenning/TCS/igrp-concepts.html (1091 words)

	Inter-Gateway Routing Protocol (IGRP) is Cisco's proprietary classful distance vector routing protocol
		IGRP was developed in the 1980s and does not actually use hops as a metric, although it does track hops and allows routes to be propagated up to 255 hops away.
		IGRP uses Autonomous System numbers to distinguish between routing domains and it is a classful routing protocol.
		IGRP sends updates every 90 seconds and uses a number of factors to determine the metric.
	www.richland.edu /staff/dkirby/142igrp.htm (605 words)

	IGRP Information (Site not responding. Last check: 2007-10-03)
		This is a process called "convergence," and when all routers in an autonomous system are aware of the status of all networks, the network is said to have "converged." On the Washington Elementary School District network, routers will be using IGRP as their routing protocol to exchange this information.
		IGRP uses bandwidth and delay by default, and can also use reliability and load.
		IGRP also uses "flash updates" to send an update sooner than 90 seconds if a change occurs, such as a network going down.
	roxanne.roxanne.org /~kenning/TCS/igrpdoc.html (528 words)

	IGRP - Coyote Creek Elementry Network Design
		IGRP (Interior Gateway Routing Protocol) is a Cisco proprietary protocol that works by providing neighboring routers with updates from internal routing tables.
		Good routing protocols such as IGRP also incorporate methods to improve the stability of the routing protocol and the network.
		IGRP is a distance-vector protocol, which means it shares its routing table with neighboring routers to create knowledge of the topology of the network.
	members.shaw.ca /web.man1/igrp.html (478 words)

	Cisco Sem3 Lesson 5 - IGRP
		IGRP is a distance vector routing protocol developed by Cisco.
		IGRP sends routing updates at 90-second intervals that advertise networks for a particular autonomous system.
		The algorithm used to calculate the routing metric for IGRP is also shown as well as information about routing metrics (like hop count) and routing filters.
	www.delmar.edu /Courses/ITSC1391/Sem3/5IGRP.htm (1352 words)

	IGRP (Interior Gateway Routing Protocol) (Linktionary term)
		IGRP is a Cisco interior routing protocol based on distance-vector routing.
		IGRP is a distance-vector protocol, as opposed to a link-state protocol.
		At the time, IGRP was a significant improvement over RIP, which had a hop count restriction that limited the size of an internetwork.
	www.linktionary.com /i/igrp.html (846 words)

	[No title]
		This paper is based on the patent application for IGRP, and on an examination of the code implementing IGRP in the cisco gateways.
		Goals for IGRP IGRP is a protocol that allows a number of gateways to coordinate their routing.
		The metric used by IGRP includes - the topological delay time - the bandwidth of the narrowest bandwidth segment of the path - the channel occupancy of the path - the reliability of the path.
	www.cs.rutgers.edu /pub/igrp.doc (10822 words)

	Mind Forums - CCNP Routing 3 - IGRP and EIGRP (Site not responding. Last check: 2007-10-03)
		IGRP uses a composite metric - bandwidth, delay, reliability, load.
		IGRP uses a random factor of 20%, so the actual update timer is between 72 and 90 seconds.
		according to cisco, the flush timer for igrp must be at least the sum of the invalid and holddown timers, or else the proper holddown interval can't elapse before the a new route is accepted.
	mindforums.com /forums/showthread.php?threadid=342 (1873 words)

	Cisco IGRP: Interior Gateway Routing Protocol
		Cisco developed Enhanced IGRP in the early 1990s to improve the operating efficiency of IGRP.
		IGRP is a distance vector Interior Gateway Protocol (IGP).
		Using IGRP, for example, if one path is three times better than another path (its metric is three times lower), the better path will be used three times as often.
	www.javvin.com /protocolIGRP.html (375 words)

	What is IGRP
		IGRP was designed to run in any network environment, however, and Cisco soon ported it to run in OSI Connectionless-Network Protocol (CLNP) networks.
		IGRP uses either the administrator-set or the default weightings to automatically calculate optimal routes.
		IGRP maintains a number of timers and variables containing time intervals.
	www.pulsewan.com /data101/igrp_basics.htm (981 words)

	Interior Gateway Routing Protocol (IGRP)
		The Interior Gateway Routing Protocol (IGRP) is a routing protocol that was developed in the mid-1980s by Cisco Systems, Inc. Cisco's principal goal in creating IGRP was to provide a robust protocol for routing within an autonomous system (AS).
		IGRP has proven to be one of the most successful routing protocols of all time.
		IGRP was specifically designed to offer an alternative to RIP that was as easy to implement and administer as RIP, yet that did not suffer from these fundamental limitations.
	www.cisco.com /univercd/cc/td/doc/cisintwk/ito_doc/igrp.htm (1713 words)

	Cisco EIGRP: Enhanced Interior Gateway Routing Protocol Overview
		IGRP is Cisco"s Interior Gateway Routing Protocol used in TCP/IP and OSI internets.
		It is regarded as an interior gateway protocol (IGP) but has also been used extensively as an exterior gateway protocol for inter-domain routing.
		Key capabilities that distinguish Enhanced IGRP (EIGRP) from other routing protocols include fast convergence, support for variable-length subnet mask, support for partial updates, and support for multiple network layer protocols.
	www.networkdictionary.com /protocols/eigrp.php (329 words)

	Interior Gateway Routing Protocol (Site not responding. Last check: 2007-10-03)
		As routing information proliferates through the network, routers can identify new destinations as they are added to the network, learn of failures in the network, and, most importantly, calculate distances to all known destinations.
		IGRP uses a composite metric that is calculated by factoring weighted mathematical values for internetwork delay, bandwidth, reliability, and load.
		IGRP provides a number of features that are designed to enhance its stability.
	www.csc.villanova.edu /~sgadde/netclass/igrp.htm (549 words)

	Cloning and Characterization of the Human and Rat Islet-specific Glucose-6-phosphatase Catalytic Subunit-related ...
		(28); the human and rat IGRP gene exon/intron boundaries were determined as described under "Experimental Procedures." Regions of sequence divergence from the mouse IGRP gene are underlined (uppercase exon sequence) or are in bold type (lowercase intron sequence).
		Alignment of the deduced peptide sequences of human and mouse IGRP and the corresponding G6Pase catalytic subunit sequences.
		IGRP gene paradoxically indicate that IGRP is a non-functional
	www.jbc.org /cgi/content/full/276/27/25197 (8068 words)

	Identification of CD4+ T Cell-Specific Epitopes of Islet-Specific Glucose-6-Phosphatase Catalytic Subunit-Related ...
		IGRP is expressed in the pancreas of both humans and NOD mice.
		To characterize the responses induced by IGRP peptides, 4-wk-old
		IGRP peptide-primed cells from NOD mice were cultured in the presence or absence of the respective IGRP peptide.
	www.jimmunol.org /cgi/content/full/174/9/5306 (5965 words)

	Enzymatic Characterization of the Pancreatic Islet-specific Glucose-6-Phosphatase-related Protein (IGRP) -- Petrolonis ...
		IGRP cDNA was cloned from a human islet cDNA library prepared.
		The IGRP proteins on the immunoblot were visualized by an anti-His monoclonal antibody and 5 min of exposure.
		Fluorescence was monitored with a fluorescence-based microplate reader using excitation at 530 nm and fluorescence detection at 590 nm.
	www.jbc.org /cgi/content/full/279/14/13976 (4633 words)

	EIGRP, ip routing, igrp
		Cisco's EIGRP is similar to IGRP only in the sense that it uses the same metrics; Delay, Bandwidth, Reliability and Load.
		The metric for EIGRP is calculated by multiplying the IGRP metric by 256.
		Taking the example we used when looking at IGRP, a link where the bandwidth to a particular destination is 128k and the delay is 84000 microseconds.
	www.rhyshaden.com /eigrp.htm (3268 words)

	TCP / IP Protocols - AH \| ESP \| TLS \| BGP-4 \| EGP \| EIGRP \| GRE \| HSRP \| IGRP
		The same distance vector technology found in IGRP is also used in EIGRP, and the underlying distance information remains unchanged.
		IGRP is sent using IP datagrams with IP 9 (IGP).
		As many routing entries as possible are included to fit into a 1500-byte datagram (including the IP header).
	www.protocols.com /pbook/tcpip5.htm (2306 words)

	CIS520 Demo Lecture
		Enhanced IGRP (EIGRP) is another balanced hybrid routing protocol, but it uses more advanced features to avoid loops and speed convergence.
		In Example 6-2, a sample IGRP configuration causes the router to advertise about all connected subnets, to listen on all interfaces for IGRP updates, and to advertise on all interfaces except ethernet 1.
		IGRP can learn more than one route to the same subnet, with different metrics; however, the metrics are very likely to never be exactly equal.
	distancelearning.ksi.edu /demo/520/cis520.htm (7031 words)

	Integrating Enhanced IGRP into Existing Networks
		IGRP is a dynamic distance vector routing protocol designed by Cisco Systems in the mid-1980s for routing in an autonomous system (AS) containing large, arbitrarily complex networks with diverse media.
		Enhanced IGRP can be added to an IGRP network in two ways: using the same IGRP AS number or using a new AS number.
		IPX Enhanced IGRP routes are automatically preferred over RIP routes regardless of metrics unless a RIP route has a hop count less than the external hop count carried in the Enhanced IGRP update, for example, a server advertising its own internal network.
	www.pluscom.ru /cisco_product/cc/td/doc/cisintwk/idg4/nd2017.htm (5465 words)

	RouterGod » Fabio on Cisco’s IGRP Protocol
		IGRP uses a composite metric based on the lowest bandwidth along a route and the sum of the delay along the same route.
		IGRP sends out updates every 90 seconds, and it uses triggered updates and hold down timers, just like RIP.
		IGRP was created by Cisco, it only runs on Cisco routers.
	routergod.com /fabio (993 words)

	IGRP Commands (Site not responding. Last check: 2007-10-03)
		The Interior Gateway Routing Protocol (IGRP) is a routing protocol that was developed in the mid-1980s by Cisco Systems, Inc.IGRP is a distance vector Interior Gateway Protocol (IGP).
		Split horizons should prevent routing loops between adjacent routers, but poison-reverse updates arenecessary to defeat larger routing loops.
		IGRP is in our best interest in order for one autonomous system to communicate with another.
	home.cfl.rr.com /suckerpunch/igrp_commands.html (136 words)

	IGRP, Interior Gateway Routing Protocol
		Two proprietary network protocols that support the Internet Protocol are the "Interior Gateway Routing Protocol (IGRP)" and "Enhanced IGRP", developed by the network vendor Cisco Systems, and included here as an example of a proprietary IGP protocol.
		However, the convergence properties and the operating efficiency of enhanced IGRP have improved significantly.
		Enhanced IGRP extends IGRP so that it is independent of the network-layer protocol.
	www.livinginternet.com /i/iw_route_igp_igrp.htm (217 words)

	Washington Project
		Answer: All the schools which are interconnected will be advertised by the router located at the school district.
		The sequence of commands needed to setup IGRP is as follows: (Note: You are global configuration mode)
		Once you entered this sequence of commands in the router and two or more routers have connectivity, they will start exchanging updates with their neighbor routers.
	www.angelfire.com /sc3/ccchhan/igrp.html (161 words)

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