We are having an issue with DHCP leases on our network. Up until this point we only used static addressing. At this time we need to be able to pull dynamic lease from one of our DCs. In this instance our LAN_Client and LAN_DC just are not playing nice. If you static the client devices IP they are able to communication with everything on the network.
How things move: Client>DHCP Request>Switch>Firewall>Switch>Server
Our firewall policy is wide open at this time for traffic between the two VLANs. The switch that is passing data is a PowerConnect 5424.
DHCP is a broadcast based protocol. In order for it to work, all machines (client and server) must be in the same broadcast domain. A firewall/router does not pass broadcast traffic unless it is configured
I eventually solved a perplexing problem setting up telnet for a new switch. I installed a new Cisco WS-03560X-24P switch connected to an existing Cisco 4506 running a WS-X4013-10GE Sup II-Plus.
After configuring vlans and trunking, I could no…
Configuring network clients can be a chore, especially if there are a large number of them or a lot of itinerant users. DHCP dynamically manages this process, much to the relief of users and administrators alike!
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I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below.