EPICS RE: multiple servers on the same (loopback) interface

Experimental Physics and Industrial Control System

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<== Date ==>		<== Thread ==>

Subject:	RE: multiple servers on the same (loopback) interface
From:	Mark Rivers <[email protected]>
To:	"'Jameson Graef Rollins'" <[email protected]>, "Kasemir, Kay" <[email protected]>, "[email protected]" <[email protected]>
Date:	Tue, 9 Jul 2013 19:04:49 +0000

The broadcast is used to send a message to find the PV.  The IOC with the PV then sends a directed (non-broadcast) respond to the client, and they communicate by normal TCP.  So the client then knows the IP address of the IOC.  But to make nice human-readable output it tries to also get the IP name of the IOC, so it looks for a DNS server.

So can just put an entry in your /etc/hosts file if no DNS server is available.

Mark


-----Original Message-----
From: Jameson Graef Rollins [mailto:[email protected]] 
Sent: Tuesday, July 09, 2013 1:58 PM
To: Mark Rivers; Kasemir, Kay; [email protected]
Subject: RE: multiple servers on the same (loopback) interface

On Tue, Jul 09 2013, Mark Rivers <[email protected]> wrote:
> This is probably the problem of DNS resolution timing out because there is no DNS server to do the reverse DNS lookup on that interface.

Hi, Mark.  But given that it's a broadcast address, it should never
resolve to any single name.  Does this mean that this is a general
problem with using a broadcast address as EPICS_CA_ADDR_LIST on the
client side?

jamie.

References:: multiple servers on the same (loopback) interface Jameson Graef Rollins; Re: multiple servers on the same (loopback) interface Kasemir, Kay; Re: multiple servers on the same (loopback) interface Jameson Graef Rollins; RE: multiple servers on the same (loopback) interface Mark Rivers; RE: multiple servers on the same (loopback) interface Jameson Graef Rollins

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