This counter reports how many of the remote connections in this port's LLDP remote systems table were detected because a Hirschmann proprietary LLDP extension message was received from that neighbor. Administrators use it to see how many connected neighbors are specifically Hirschmann equipment using the vendor's extended discovery mechanism. For example, a nonzero Hirma entry count confirms at least one Hirschmann device is directly connected to this port and actively exchanging the vendor's LLDP extension.