What is classful and classless routing ? Difference between RIPv1 & RIPv2 ? What is multicasting ? what is VLSM ?

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Answered by: Suraj

  • Jan 21st, 2007


1) Classful & Classless routing

Classful routing : Routing Protocol that do not send subnet mask information when a route update is sent out. All devices in the network must use the same subnet mask

Eg : RIP V1

Classless routing : Routing that sends subnet mask information in the routing updates. Classless routing allows VLSM (Variable Length Subnet Masking)

Eg : RIP V2 , EIGRP , & OSPF.

2) Difference between RIP V1 & RIP V2.

RIP V1 : Distance Vector , Maximum Hop count of 15 , Classful , No Support for VLSM , No support for Discontigious networks.

RIP V2 : Distance Vector , Maximum Hop count of 15 , Classless , Supports VLSM networks , Supports Discontigious networks

3) Mulitcasting : Any Communication between a single sender and multiple receivers.

In Networking Multicast messages are sent to a defined subset of the network addresses.

Showing Answers 1 - 4 of 4 Answers

Classfull routing protocol is a routing protocol that strictly. follows the classfull IP like IGRP,RIP

Classless Routing A scheme which allocates blocks of Internet addresses in a way that allows summarisation into a smaller number of routing table entries.

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rakesha

  • Jun 23rd, 2006
 

classful- it wont send subnet mask in its route updateclassless- it will send subnet mask in its route update and support summarization,CIDR,VLSM.RIP1-classfullrip2-classlessMulticasting-sending data only to a set of systems. class d is used for multicastingvlsm-Lan network having different subnetmask

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prakash

  • Aug 17th, 2006
 

What isVLSM? VLSM: Is nothing but Variable Length Subnet mask.It is the process of subnetting the subnetted addMulticasting: Is nothing but sending the message to particular number of computer in side the LAN or outside the LAN.

Dulan Wickramasinghe

  • Sep 23rd, 2006
 

Diff bet RIPv1 & RIPv2 ?Both RIPv1 and RIPv2 are based on hop count but RIPv2 supports Variable Lenght Subnet masking (VLSM)

Suraj

  • Jan 21st, 2007
 

1) Classful & Classless routing

Classful routing : Routing Protocol that do not send subnet mask information when a route update is sent out. All devices in the network must use the same subnet mask

Eg : RIP V1

Classless routing : Routing that sends subnet mask information in the routing updates. Classless routing allows VLSM (Variable Length Subnet Masking)

Eg : RIP V2 , EIGRP , & OSPF.

2) Difference between RIP V1 & RIP V2.

RIP V1 : Distance Vector , Maximum Hop count of 15 , Classful , No Support for VLSM , No support for Discontigious networks.

RIP V2 : Distance Vector , Maximum Hop count of 15 , Classless , Supports VLSM networks , Supports Discontigious networks

3) Mulitcasting : Any Communication between a single sender and multiple receivers.

In Networking Multicast messages are sent to a defined subset of the network addresses.

mvadivell

  • Feb 5th, 2007
 

Classful & Classless routing Classful routing : Routing Protocol that do not send subnet mask information when a route update is sent out. All devices in the network must use the same subnet mask Eg : RIP V1 Classless routing : Routing that sends subnet mask information in the routing updates. Classless routing allows VLSM (Variable Length Subnet Masking) Eg : RIP V2 , EIGRP , & OSPF.Having known that u should know difference between RIP v1 and RIP V2 Difference between RIP V1 & RIP V2.RIP V1 : Distance Vector , Maximum Hop count of 15 , Classful , No Support for VLSM , No support for Discontigious networks.RIP V2 : Distance Vector , Maximum Hop count of 15 , Classless , Supports VLSM networks , Supports Discontigious networks

talentpk

  • Jun 3rd, 2010
 

Classful routing occurs by Classful Routing protcols. such as RIP and IGRP. this means you cannot route VLSM Subnets, if the routes are routed they will lose their VLSM information, because RIP and IGRP doesnt carry Subnet mask information in RIP/IGRP layer4 packets.

However the receving route has to know where the network bit boundry ends and host bits begin. in order to find this the router has to use it's directly connected interface subnet mask and the router pertains that all the routes received are to be used with same subnet mask of it's locally connected interface.

Another problem can come when there are discontiguous networks, If you are using 10.0.0.0 network in one part of network and then after couple of HOPS you use 10.0.0.0 again on some other router. The boundary routers will do Summarization of this network such as 10.0.0.0/8

This can cause routing issues because now some portion of your network thinks that there are now 2 sources to the major network 10.0.0.0/8. You will see that some portion of networks will reach some subnets of major 10.0.0.0/8 while other packets destined for other subnets becomes dropped.

RIPv2 has this eliminated since it can support a VLSM in its advertisments and that is the reason that the routing issues are much reduced though not completely eliminated as there are other issue with RIP such as hop count and late convergence

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classfull routing protocols do not carry subnet mask information on their routing updates. Classless routing protocols do carry subnet mask information on their routing updates.

ripv1 is a classfull routing protocol.
No Support for VLSM

ripv2 is a classless routing protocol. it supported theVLSM.

Mulitcasting : Any Communication between a single sender and multiple receivers.

VLSM - Variable Length Subnet mask.It is the process of subnetting the subnetted addMulticasting.

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sm_feroz

  • May 24th, 2011
 

Hi,

Classful and Classless Routing is defined as if particular ip address ex.192.168.1.1/24 this is defined as classfull routing and 192.168.1.1 without specific subnetting is defined as classless routing.In 192.168.1.1/24 loopbacks can be created with defined subnett mask like 255.255.255.224.

Multicasting is defined as one to many .
VLSM is defined as Variable Lenght Subnet Mask.

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