Experimental Physics and Industrial Control System
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On 05/17/2011 08:47 AM, Jeff Hill wrote:
oops, yes I said that backwards, its typically broadcasts that are received
by all servers (on the same host), and unicasts that are received by only by
one of multiple servers (on the same host).
I'm running with defaults for the EPICS_CA* and EPICS_CAS* env
variables, but have also played with EPICS_CA_ADDR_LIST,
EPICS_CA_AUTO_ADDR_LIST, and EPICS_CA_INTF_ADDR_LIST with no success.
The IOC's server is not yet impacted by the EPICS_CA_INTF_ADDR_LIST
configuration.
How about the caget client?
I've been having trouble with one linux machine where my IOC's
appear to be running correctly, dbgf works from iocsh, but caget
from another window on the same machine fails to connect.
Sounds like a routing level issue. The output from "netstat -r" might be
interesting.
Jeff
Here's netstat -nr output:
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window
irtt Iface
192.168.254.0 0.0.0.0 255.255.255.0 U 0 0
0 eth2
134.79.32.0 0.0.0.0 255.255.252.0 U 0 0
0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0
0 eth2
0.0.0.0 134.79.35.1 0.0.0.0 UG 0 0
0 eth0
Mark suggested a firewall issue. I'm looking into that now. This
isn't our normal deployment system. It's for an experimental chamber
that's
currently in a different building at SLAC that wanted to run the same
EPICS
motor control as they do when their chamber is installed in the
hutch. That
machine is visible from the internet, and I don't administer it, so
I'll need
to find the sysadmin for this machine before making any changes.
This system, kernel 2.6.26.3-29.fc9.x86_64, does have a package called
system-config-firewall
installed that says the firewall is enabled. iptables shows:
# /sbin/iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT all -- anywhere anywhere state
RELATED,ESTABLISHED
ACCEPT icmp -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT tcp -- anywhere anywhere state NEW
tcp dpt:ssh
ACCEPT tcp -- anywhere anywhere state NEW
tcp dpt:mysql
REJECT all -- anywhere anywhere
reject-with icmp-host-prohibited
Chain FORWARD (policy ACCEPT)
target prot opt source destination
REJECT all -- anywhere anywhere
reject-with icmp-host-prohibited
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Thanks,
- Bruce
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ANJ, 18 Nov 2013 |
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