Experimental Physics and
Industrial Control System

Denise Finstrom via Tech-talk <[email protected]> · Wed, 22 Jan 2020 10:18:06 -0600 (CST)

Hello,

Is there an equivalent to EPICS_CA_MCAST_TTL for the pvAccess protocol?

We are attempting to use multicast for PV search and haven't found a way to

change TTL values when using pvAccess. When we set EPICS_PVA_ADDR_LIST to a

multicast address, the multicast goes out with a TTL of one and doesn't get

routed to other subnets. We are successfully using multicast for PV search with

the CA protocol and EPICS_CA_MCAST_TTL. We are looking to do the same with

pvAccess, but the EPICS_PVA_MCAST_TTL environment variable doesn't seem to

exist. We are using base-7.0.3.1. Any advice would be appreciated.

Thanks,

Denise