Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Wed, 20 Oct 1999 13:10:50 -0500

Hi Andreas,

Luedeke Andreas wrote:
> 
> [...] linboot.ioc.1066 > 192.168.255.255.5064: udp 32 (ttl 64, id [...])
...
> [...] iocLin.ioc.1031 > 192.168.10.255.5065: udp 16 (ttl 30, id [...])

These are broadcast addresses on two different subnets which is usually
why they can't communicate - you either need to set their subnet masks to
be the same on both machines, or if your network topology won't allow this
you'll need to set the EPICS_CA_ADDR_LIST environment variable to the
broadcast address of the other subnet (see the Channel Access reference
manual for details).  On an ioc use putEnv("VAR=value") to set this any
time before iocInit.

You can see the subnet mask by using ifShow at the vxWorks shell, and set
it by adding ":ffffff00" (without the quotes) after the target's IP
address in its boot parameters.  Replace the ffffff00 with whatever the
mask should be for its subnet.

- Andrew
-- 
Complexity comes for free, Simplicity you have to work for.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System