[Info-vax] Help! NMA$C_PCLI_MCA on Itanium rx2660

[john.weed at triangleexperience.com]

Hey folks,

I've been beating my head against a dull rock here; trying to do a simple filtered multicast read against a port on my rx2660. I've done this before, many years ago, and for some reason it simply isn't working now. No real good examples out there I can see at the moment.

I have a PC on the network running wire shark and it sees the packets just fine, with the expected destination address and protocol type. Source address matches the hardware address of the sending rx2660.

If I just IO$_SETMODE the interface with NMA$C_PCLI_PRM set to NMA$C_STATE_ON, the packets come in fine. If, however, I try to set up the port for the protocol type (56-78) and NMA$C_PCLI_MCA set to a single multicast address (AB-00-04-00-12-34), I get nothing.

This is using the embedded controller of the rx2660 (EWA or EWB).

Anyone have any good examples of reading multicast Ethernet frames using the NMA$C_PCLI_MCA setting?