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DLDP : Device Link Detection Protocol, the HP version of UDLD, which is a Cisco protocol, published in RFC5171

HGMP: Huawei Group Management Protocol, some switch clustering protocol.

Since both these protocols are proprietary these have to be reverse engineered in order to create dissectors for Wireshark. No one has done that so far. Iff you have relevant information and sample captures (not screenshots) you can enter an enhancement bug to help getting this effort started.