Experimental Physics and Industrial Control System
Hi Mark,
On 07/16/2018 12:18 PM, Mark Rivers wrote:
> I thought we were doing directed UDP broadcasts to Cisco switches at
> the APS.
...
> Isn't that doing a directed UDP broadcast to the switch for the
> 164.54.162.* subnet?
If my internal investigations are correct you have an HP ProCurve switch
connecting your two subnets, which is why this still works for you.
Apparently it *is* possible to configure Cisco switches to allow this,
according to the last answer to this StackOverflow question:
https://stackoverflow.com/questions/379015/udp-broadcast-packets-across-subnets
This article from Cisco seems to explain how:
http://www.ciscopress.com/articles/article.asp?p=330807&seqNum=9
If you have a system available with a network interface on both subnets
you could also run a pair of UDP Broadcast Packet Relays to pass
broadcasts between them, on both ports 5064 and 5065. More information
on this is available at
https://wiki-ext.aps.anl.gov/epics/index.php/How_to_Configure_Channel_Access#UDP_Broadcast_Packet_Relay
- Andrew
--
Arguing for surveillance because you have nothing to hide is no
different than making the claim, "I don't care about freedom of
speech because I have nothing to say." -- Edward Snowdon
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