While working with a client, this topic came up and we needed to determine the device’s DHCP Vendor Class Identifier (VCI) or option 60. ![]() I’ve also worked on a few issues where the vendor changed the DHCP Vendor Class Identifier (VCI) with a firmware upgrade, so this is a good technique to learn. Presently there are all sorts of devices that you might want to define its own DHCP range, examples would be printers, webcams, various tablets or access points. How to Capture DHCP and Determine Option 60 One of the most popular is to create a VLAN just for those devices, the most common example is the typical voice VLAN where your VoIP sets are in its own VLAN, with its own DHCP scope and possible a specific quality of service configuration. There are several approaches to deal with this. Since different devices might require different IP configuration settings and statically configuring them isn’t realistic. There are an increasing number of network attached devices, and trying to keep them organized gets to be challenging.
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