TB30s SIP Administrator Guide v1.3 Page 215 of 259
User Class Identifier
User Class identifier is a DHCP option (Opt 77) which allows DHCP servers to
serve different devices differently.
In particular, this option is useful for Provisioning scenarios with more than
one model using a similar strategy for provisioning parameter transport
using options 66/67/150.
TB30 will send option 77 in all DHCP DISCOVER and DHCP REQUEST
messages.
The content delivered by TB30 within this option depends on the protocol
loaded.
Hence it will be “Thomson TB30S” or “Thomson TB30M”
As an example, this is what would be seen with a packet sniffer with an SG
version
Feature activation
This feature is always active and does not need any configuration.