Subnetting

[gampt]

We have subnetted our Internal Network. We used an I.P. range of 172.16.16.0-254, 172.16.17.0-254, 172.16.18.0-254, 172.16.19.0-254 and mask 255.255.252.0. We created a subnet range of 172.16.10.0-254 and maske 255.255.255.0. Our routers are configure to route to approprate network. We are able to ping workstation on the both subnett but we are not able to get to the Internet on new subnet we creates. Anyone have any ideas on what to do?

More Information:

1. File Format: PDF/Adobe Acrobat - Quick ViewIPv4 Simple Subnetting
2. A quick and easy way to answer certification subnetting questions
3. If you need to know about IP addressing and subnetting get it here
4. Subnet Basics: This article assumes that you know how to perform subnetting in the traditional method but it is important to stress that there are only 3 classes
5. It is also intended to be a teaching tool and presents the subnetting results as easy
6. Subnetting, documented in RFC 950, originally referred to the subdivision of a class-based network into subnetworks, but now refers more generally to the subdivision
7. Our IP addressing and subnetting crash course provides an overview of the fundamentals network engineers need to know

[hothanhminh]

If I understand correctly, you are trying to split your class B into two subnets, but with one subnet being 75% of the addresses and the other subnet being 25% of the adresses. You can't do that. The subnets must be equal in size. And all subnets must use the same netmask.

More Information:

1. The first subnet obtained from subnetting has all bits in the subnet bit group set to zero (0)
2. When it comes to IP subnetting, as you don't do it everyday, it can be confusing and take a while to get back into
3. Addressing and Subnetting on the Near Side of the 'Net
4. IP addressing and subnetting fundamentals, IPv4, IPv6, DHCP, calculating subnet masks are covered in this guide for network pros
5. Although subnetting can be done for a variety of reasons, from departmental to geographic to political
6. Subnetting is the process of breaking down an IP network into smaller sub-networks called "subnets
7. IP Subnetting Tutorial - All about IP addressing and subnetworking
8. subnetting, the Network ID and Host ID are divided as follows:
9. Hope I didn't confuse you terribly, but this is the main line of thinking for subnetting a network
10. com: IP Addressing and Subnetting, Including IPv6 (0792502940167): Syngress, Syngress Media: Books

[vanthai88]

no they don't, if he has set his router up correctly. he has to make sure that if he is NOT using static routes in his router configuration that he is using a routing protocol that supports VLSM, i.e., RIP version 2 or EIGRP.



that's the purpose of routing and subnetting: not having to have everyone on the same subnet.



hope this helps.

More Information:

1. We are allowed to start with IP subnet zero because the guys who invented the RFC (requests for comment) for subnetting designed it to permit that
2. By Subnetting you can keep adding to your network without requiring more IP addresses
3. You need to be able to do it by hand in case you have to work out subnetting problems in your head or
4. Subnetting allows you to create multiple logical networks that exist within a single Class A, B, or C network
5. The main idea in subnetting is to divide a network into smaller pieces
6. Just as with subnetting, the subnet calculator makes it easy visualize and generate CIDR information
7. Looking at the last octet (because you use this octet for subnetting on a class