VLSM and Routing Using RIPv2 Protocol

[Xiomar]

With IPv4 routing protocol, as the network grew, it entered a crisis of leadership, so both designers and network administrators had to make more efficient routing schemes. One technique is the use of VLSM, with it you can use a subnet mask for a few long IP addresses and subnet mask cut to many IP addresses. This is very often known as subnetting. Using VLSM addressing schemes can design efficient and scalable. However, it is necessary to choose a routing protocol that supports this technique to implement on the network. Some of them are:

• RIPv2
• OSPF
• EIGRP

[Xiomar]

These protocols will be studied during this activity. Meanwhile, for more on this issue should give you the following questions:

1. Why is it said that the subdivision VLSM subnets network into subnets?
--> That from a range of ip's interrelated divides addresses and not to waste the same way to profit in the sense of communications.

2. What does the slash notation (/ 30, / 24, etc.)?
--> Subnet mask, Which it is interpreted Host number and address.

3. Have you ever wondered if the networks of organizations have limits on the Internet?
--> The organizations will always remain in constant growth in the direction of the networks, just as it works to IPV6.

4. Are they free to travel throughout the Internet, since it has no owner?
--> For in these cases there is a network administrator, which is responsible for security, control and proper functioning of the Network. In the Internet operate different autonomous systems, which require routing protocols to handle data traffic, these protocols are classified as Internal Gateway Protocols (IGP).

[Xiomar]

For communication between different autonomous systems require routing protocols, which are classified as External Gateway Protocols (EGP). Within the class of IGP protocols are classified as:

• The distance vector.
• The link status.

One of the distance vector protocols are RIP popular. This is due to its ease of configuration, deployment and troubleshooting. However, this simplicity entails some limitations, I'd like to provide feedback mentioning.

5. What are these limitations?
-->

• Routing loops. The routing loops may be the result of inconsistent routing tables have not been updated due to the slow convergence of a network subject to change.
• Convergence slow. The use of periodic updates can cause slower convergence. Even when using advanced techniques, for example, triggered updates, the overall convergence is still slower compared to the protocols of link-state routing.
• Scalability limited. The slow convergence may limit the size of the network because larger networks require more time to propagate routing information.