what is routing protocals & routed protocals.
Answer Posted / ram
Confusion often arises between routing protocols and routed protocols. While routing protocols help the router decide which paths to send traffic along, routed protocols are responsible for the actual transfer of traffic between L3 devices.[5] Specifically, a routed protocol is any network protocol that provides enough information in its network layer address to allow a packet to be forwarded from one host to another based on the addressing scheme, without knowing the entire path from source to destination. Routed protocols define the format and use of the fields within a packet. Packets generally are conveyed from end system to end system. Almost all layer 3 protocols, and those that are layered over them, are routable, with IP being an example. Layer 2 protocols such as Ethernet are necessarily non-routable protocols, since they contain only a link-layer address, which is insufficient for routing: some higher-level protocols based directly on these without the addition of a network layer address, such as NetBIOS, are also non-routable.
In some cases, routing protocols can themselves run over routed protocols: for example, BGP runs over TCP: care is taken in the implementation of such systems not to create a circular dependency between the routing and routed protocols. That a routing protocol runs over particular transport mechanism does not mean that the routing protocol is of layer (N+1) if the transport mechanism is of layer (N). Routing protocols, according to the OSI Routing framework, are layer management protocols for the network layer, regardless of their transport mechanism:
IS-IS runs over the data link layer
OSPF, IGRP, and EIGRP run directly over IP; OSPF and EIGRP have their own reliable transmission mechanism while IGRP assumed an unreliable transport
RIP runs over UDP
BGP runs over TCP
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
How to Define the defect density?
i have got a gre score of 800 in my first attemt and a score of 1080 in the second and i have repoted both the scores.will it effect my chances of getting good university
I am refused L1-B visa filed by my employer on May 09 by US consulate Chennai. When i am eligible to apply L1-B visa again through my employer?
Please help to write testcase for ECG machine
i need to alone print a number no text by using if statement .say some idea
write an algorithm in O(n) time for finding the kth smaalest element form an array of n elements , where n and k are entered by user
what the bridge id of any switches
real time examples for basic concepts in oop
why do you want to join tcs
what is different between static block and public static void main??
is built-in data-type are abstract data-types in java
safety valve calculation?
I have file with input as below : Name Value Rohan 12,13,14 Rohit 1,2,3 Output should be : Rohan 12 Rohan 13 Rohan 14 Here how will the normalize component work? Thanks
Please send the details and fee for Intools training course..I would like to do the course in second week of jUNE 2010.
Please send me Sample papers OF National Informatics Centre (NIC) Vacency