I need to be able to construct a packet with a specific MAC address for the destination. It is a well-known multicast destination. I cannot reverse engineer based on an IP Address because of the variable choices the translation creates. Below is the MAC address and a description of how that specific MAC address is used.
Is there a library that I can use (like w5100.h in arduino) where I have access to the MAC layer of a paket?
Cisco devices send CDP announcements to the multicast destination address 01-00-0c-cc-cc-cc, out each connected network interface. These multicast packets may be received by Cisco switches and other networking devices that support CDP into their connected network interface. This multicast destination is also used in other Cisco protocols such as VTP. By default, CDP announcements are sent every 60 seconds on interfaces that support Subnetwork Access Protocol (SNAP) headers, including Ethernet,