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ip address classes are not decided on the basis of subnet masks, but on the first few reserved bits<br />
<br />
for class A - first bit always zero<br />
for class B - first 2 bits 10<br />
and so on...<br />
<br />
also the range 10.xx.xx.xx may be split up into many subnetworks, hence the extended subnet mask
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ip address classes are not decided on the basis of subnet masks, but on the first few reserved bits

for class A - first bit always zero
for class B - first 2 bits 10
and so on...

also the range 10.xx.xx.xx may be split up into many subnetworks, hence the extended subnet mask

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Thanx edmonds: &nbsp;That settles it without question..<br />
<br />
Rgds,<br />
Ferose
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Thanx edmonds:  That settles it without question..

Rgds,
Ferose

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I am implimenting VPN on a client network with LAN subnet on the reserved IP block &nbsp;10.xxx.xxx.xxx<br />
<br />
Since this is a Class A IP block..I would assume the subnet to be 255.0.0.0. But they are using 255.255.255.0 <br />
<br />
<br />
Is this a right thing to do ? Though their network is functioning properly as of now, will it create issues later on for Internetworking or VPN connectivity with other networks?<br />
<br />
Pls refer if you a link to any authentic docs on this (Like RFC)<br />
<br />
Rgds,<br />
Ferose &nbsp; &nbsp;
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I am implimenting VPN on a client network with LAN subnet on the reserved IP block  10.xxx.xxx.xxx

Since this is a Class A IP block..I would assume the subnet to be 255.0.0.0. But they are using 255.255.255.0 


Is this a right thing to do ? Though their network is functioning properly as of now, will it create issues later on for Internetworking or VPN connectivity with other networks?

Pls refer if you a link to any authentic docs on this (Like RFC)

Rgds,
Ferose    

Reserved IP blocks and subnets...

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

Networking

The Dynamic Host Configuration Protocol (DHCP) is an auto configuration protocol used on IP networks and an extension of the Bootstrap Protocol. DHCP allows for computers to be configured automatically to communicate with each other over an IP network without the need for manual setup by a network administrator. The implementation of DHCP relies on a DHCP server to hand out network configuration information to DHCP-capable clients that request an IP address (and other information required or useful in communicating with other devices on an IP network). In addition to an IP address, common configuration information served over DHCP includes a default gateway, subnet mask and DNS sever(s).