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Subject: | Re: Among the things for which I wish... |
From: | Till Straumann <[email protected]> |
To: | Pete R Jemian <[email protected]> |
Cc: | Tech-Talk <[email protected]> |
Date: | Mon, 10 Nov 2003 14:35:42 -0800 |
To find the active IOCs on your subnet you can do something like
tpdump port 5065 and you'll see trickle in beacons. A pipeline
Now there's the quick answer to [2]. Thanks. Maybe I'll write myself a quick C hack that will make this happen. But, I'll have to scan each host in the subnet for this.
At 04:43 PM 11/10/2003 -0500, you wrote:
On Mon, 10 Nov 2003, Pete R Jemian wrote: > [2] An EPICS "ping" command or something that a sysAdmin could use to > identify all the EPICS IOCs within a subnet. Maybe there is already > documentation on how to do this by probing a certain port or some other > elegant method.
Not an elegant or a fool-proof way, but 'nmap -p 5064 host' will tell you
if a host is listening on the default ca server port. (nmap available from
www.insecure.org/nmap/ ).
> answer the question "Where is this PV?" (Maybe this, too, is already > available from the low level C calls.
Not a way to get a list of PVs on an IOC, but ca_host_name() will tell you
where a PV is. In medm, the "PV Info" tool makes use of this as a
convenient way to find out which IOC a PV is from.
-- Steve Hartman [email protected] | 919-660-2650 Duke Free Electron Laser Laboratory