Sep 23, 2016 Classless and classful routing behaviors are not the same as classless and classful routing protocols. However the same packet to. 1 will be dropped if it is classfully routed. This is because the creation of the. 024 route added knowledge of the. 08 to the routing table. classful and classless routing behavior Re: Classless and Classful routing Hi Oren, In the essence of classfulclassless routing, yes ip classless is there by default in the new codes, but as i said before you must differentiate between classfulclassless routing protocols, and classfulclassless router forwarding behavior.
If classful routing is enabled with the no ip classless command, the behavior is changed. A packet destined to. 2 would still be routed to. 3. Additionally, a packet destined to. 8 would be sent to default gateway. classful and classless routing behavior
Classful vs Classless Routing Protocols. Routing protocols can be classful or classless: Classful routing protocols DO NOT send the subnet mask along with their updates. Classless routing protocols DO send the subnet mask along with their updates. Lets take a look at an example to emphasize this: We have three routers and a bunch Classful vs. Classless Routing Posted on June 1, 2011 May 5, 2011 by Ryan Before the internet and general networking become popular into what it is now, there were and still are routing protocols that only do classful routing. So I've learned there are classful and classless routing protocols, and there are classful and classless routing behavior. I understand a classless protocol such as RIPv2 can have either classful or classless routing behavior; and a classful protocol such as RIPv1 can have classful routing behavior. classful and classless routing behavior In the figure, the routing sources (including classful and classless routing protocols) are the inputs used to populate the routing table. The routing behavior, specified by the ip classless or no ip classless commands, determines how the route lookup process will proceed at Step 3. Apr 27, 2011 Classless behavior of Classful Routing protocol April 27, 2011 Robin Kumar Most of the books say that Classful routing protocol does not support classless subnets which is not 100 true, as they can sendreceive some subnets even without its Mask. A classful network is a network addressing architecture used in the Internet from 1981 until the introduction of Classless InterDomain Routing in 1993. The method divides the IP address space for Internet Protocol version 4 (IPv4) into five address classes based on the leading four address bits. Hi, Trying to dig a bit deeper into classful routing routing protocol behavior, and read this snippet in BSCI selfstudy: A router sends the entire subnet address when an update packet involves a subnet of the same classful network as the IP address of the transmitting interface.