RE: network config

[johill@lanl.gov (Jeff Hill)]

Pierre,

> I also have in my resource.def :
> EPICS_CA_ADDR_LIST=x.x.x.x   (#IP OPI2)
> EPICS_CA_AUTO_ADDR_LIST=YES

The proper configuration depends on whether your router (OPI1)
is configured to forward IP broadcasts directed at another subnet.

If forwarding of broadcasts is enabled in your router:

1) On IOCs: set EPICS_CA_ADDR_LIST=x.x.x.x where x.x.x.x 
is the broadcast address of the OPI's subnet. Set
EPICS_CA_AUTO_ADDR_LIST=YES.

2) On OPI2: set EPICS_CA_ADDR_LIST=y.y.y.y where y.y.y.y 
is the broadcast address of the IOC's subnet and 
EPICS_CA_AUTO_ADDR_LIST=YES. 

3) On OPI1 only set EPICS_CA_AUTO_ADDR_LIST=YES and CA 
should auto-configure the broadcast address of both subnets
that are directly attached to this particular (routing) host.

If forwarding of broadcasts is not enabled in your router:

1) On IOCs: set EPICS_CA_ADDR_LIST=a.a.a.a where 
a.a.a.a is the address of OPI2 and set EPICS_CA_AUTO_ADDR_LIST=YES.

2) On OPI2: set EPICS_CA_ADDR_LIST=b.b.b.b c.c.c.c d.d.d.d where 
b.b.b.b, c.c.c.c, and d.d.d.d are the addresses of your IOCs.

3) On OPI1 only set EPICS_CA_AUTO_ADDR_LIST=YES and CA 
should auto-configure the broadcast address of both subnets.

The details are in the configuration chapter of this document:
http://mesa53.lanl.gov/lansce8/Epics/ca/cadoc/cadoc_1.htm

The "casr <integer detail level>" diagnostic can be executed
in the IOC to examine the final state of the server's address
list (after auto-configuration and after the addition of the contents
of EPICS_CA_ADDR_LIST during iocInit).

Jeff

> 
> On a Local Area Network, I have 2 OPIs 
> (OPI1 & OPI2 : SUNs with solaris 2.6 and R3.13.0.beta11). 
> 
> OPI1 has 2 ethernet interfaces :
> -the 1st on LAN (le0).
> -I define a subnet on the 2nd (le1) using C adressing 
> where I put 2 IOCs (MVME162 with vxWorks 5.2).
> 
> So far, I run CA-client applications using only OPI1 
> to reach the PVs on IOCs. Now I need to reach them with
> OPI2, so I made the following changes :
> -OPI1 is declared as router.
> -on OPI2, I add route to access subnet of OPI1
> (route -n add ...)
> -routeAdd ... on IOCs.
> 
> I can ping and telnet the IOCs from OPI2 but CA-client 
> applications (MEDM,...) are unable to connect the PVs.
> 
> I also have in my resource.def :
> EPICS_CA_ADDR_LIST=x.x.x.x   (#IP OPI2)
> EPICS_CA_AUTO_ADDR_LIST=YES
> 
> "casr" on IOCs says only OPI1 is client.
> 
> Could someone tell me what I am missing?
> thanks,
> 
> Pierre MATTEI
> CEA Saclay - FRANCE
> pmattei@cea.fr
> 
> 
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