ip addresses on PC

hendychow

Hello All,

My company set a certain (ip address range + subnet) for a certain department and that ip was set for a certain VLAN.

Let say (This is just an example) :
139.142.5.0/24
Subnet : 255.255.255.0 (/24)
So the range is : 139.145.5.1 - 139.145.5.254
VLAN : 1542

139.145.5.1 is used for gateway ( core router X )

Let say the network is like this :
Core Router X ----> Switch A ----> PCs

The Core is a 6500 series multilayer switch, and It was configured SVI = switched Virtual Interface for that VLAN 1542 for inter VLAN communication.

The workstations/PCs are assigned IP addresses based on that range, and the ports were set a certain VLAN for each port (switchport access)

My question is :
Assuming that all PC are on the same VLAN 1542 :
Do you know what regulates ip addresses which assigned to PCs ?
Why does If I change the IP to different range, it will not work ?
Which configuration can make IP addresses on the PCs must follow the range that was set or
designed initially ?

Is that because the ip address range was configured in the SVI, so that the PCs ip address have to follow that range ?
What if some of the PC was not set to that VLAN ?
Let say PC comp1 and PC comp2 are not set to VLAN 1542(switchport access on the interface was not set).
Can those 2 PCs assigned IP addresses outside the range 139.142.5.0/24 ?

Please help.

Thank You,


Hendy

networker050184

First you need to understand how a pc will attempt to access devices on its own subnet and how it will attempt to access devices off its subnet. Once you have a good understanding of that I think you will have your answers.

hendychow

Anybody knows ??

Please help !!

I appreciate that very much...


Thanks


Hendy

EdTheLad

This is a study forum, networker050184 has provided you with a clue as to what to look at. Study ARP, default-gateway and the difference between routin & switching.
You have a ccna so you should know this, if you always try and take the easy way out you wont learn anything.

Kasor

CCNA...! Both provide very good points and already told you the 80% of the answer. If you are CCNA, then I assume you also at least understand basic networking and windows env. I thinkg you got mix up on the concept. Break down the question and look from different perspective. Then you will know why.