Based on my previous posting, I've made a little progress establishing a VLAN. The problem is that now any client on my domain is looking to the cable modem for DHCP information. We have a DHCP server that provides IP addressing information to clients on our domain. But, once I plug in the cable modem's connection into Port D1 on our main switch, all the domain clients look to the cable modem for DHCP information.
Here's what I've done to establish the VLAN:
1 - On the HP ProCurve 4208v1 switch, I created a VLAN called "TimeAndPay" with an ID of 2
2 - I assigned 4 ports (D1 - D4) to this VLAN and Tagged all four ports as being part of the new VLAN
3 - On the other managed switch (HP 2524) I created a VLAN called "TimeAndPay" with an ID of 2
4 - I assigned port 20 to this VLAN and Tagged that port as being part of the new VLAN
5 - I assigned a static IP address of 10.1.10.105 to the clock and plugged the clock into port 20 of the HP 2524
6 - I was able to ping 10.1.10.105
7 - Thinking it was successful, I suddenly lost internet access on my desktop that resides in our primary domain
8 - When I went to renew my IP address, the DHCP information came from the cable modem and not the domain DHCP server
9 - I unplugged the connection between the Linksys SR2024 unmanaged switch and clients resumed obtaining DHCP information from our domain DHCP server
My questions are as follows:
1 - Did I create the VLAN correctly?
2 - How can I ensure that DHCP information is being provided by our domain DHCP server once I reconnect the clock to the VLAN?
3 - Is there anything else I need to check on to ensure this works smoothly?
Thanks for all your help and I've attached a diagram of what I have in place with respect to the VLAN.