Production to DR switch Post: 302768699

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Special Forums IP Networking Production to DR switch Post 302768699 by hicksd8 on Saturday 9th of February 2013 07:32:57 AM

02-09-2013

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What platform is this on? What hardware? What O/S?

Generally, you run some cluster/DR suite of software that manages failover. In those situations you might have node A and node B clustered. Node A is the production box and node B the DR box.

Both node A & B would have their "hardwired - never to change" IP addresses and the cluster suite presents a pseudo ip address to all clients. The clients only ever access this pseudo ip address (and don't know about the real ip addresses). When failover occurs the suite moves the pseudo ip address to the other node and the clients are none the wiser (apart from perhaps a few seconds hang).

So the question is; what have you got there?

hicksd8

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oss_userdev

oss_userdev(7)							    OSS Devices 						    oss_userdev(7)

NAME

       oss_userdev - OSS client/server audio pseudo device.

NOTICE

       This  audio  device  is not designed to be used as-is by the users. It requires a specially designed server application that implements the
       actual service (please see the OSS programming documentation for more info). The server application will then create the audio devices that
       can be used to record and/or play audio.

DESCRIPTION

       The  oss_userdev  driver is a special purpose loop back audio device that can be used when implementing OSS audio devices based on a server
       running in the background.

OPTIONS

       o  userdev_visible_clientnodes=0|1 By default (0) common client device node (/dev/oss/oss_userdev0/client) will be created for  all  server
	  instances. The clients will then get directed to the right instance based on some search criteria (for example UID). This alternative is
	  best when using single server application that can serve large number of different sesions.

       If this option is set to 1 then OSS will create separate client device nodes for each instance. Applications will have to  open	the  right
       device nodes. This alternative is best when oss_userdev is used to create different kind of services in one system. In this way for example
       a VoIP link can be accessed by opening a different device node than when opening some other service.

FILES

       /etc/oss4/conf/oss_userdev.conf
	      Device configuration file.

AUTHOR

       4Front Technologies

								 16 December 2012						    oss_userdev(7)