Ive got a question for you!
I have been asked to reconfigure some cisco switches for a company.
What they are essentially doing is changing their IP address range from a prublic range to a private range.
They have 5 x 3560 catalyst switches. They use the default Vlan but want me to configure each switch to use a different subnet (10.6.0.254 for one, 10.5.0254 for another switch etc).
They have a DHCP server connected to one of the switches (the main switch) which will give the clients of each switch an IP address in their subnet range depending on what switch they are connected to.
I have changed the Vlan ip address for 3 of the switches and updated the ip helper command to the appropriate IPs, 2 of the switches, the main switch and one located in an opposing building can see each other fine and the clients connect to the network fine and recieve IP address from the DHCP server, but the 3rd switch (which the remaining 2 switches connect to) does not communicate properly.
when i try to ping it from the main switch i get no reply. but if i am on the problem switch i can ping the other switches no problem. This means that the clients connected to the problem switch are unable to recieve DHCP information.
I have input static routes to each IP range of the switches but still no joy.
Am i missing something obvious like a service that i have not enabled/configured? The switches were working fine before hand with the public ip address.
Is there anything you would recommend me checking?
Thanks in advance,