• Subject: Re: SNA over IP communication (2)
  • From: "Mike Buglass" <list.receiver@xxxxxxxxxx>
  • Date: Fri, 5 Jan 2001 16:58:48 -0000
  • Organization: DCS eIntegration

If you are not using Anynet, then the routers are determining how to reach
the controllers.
They will be either bridging the SNA traffic or using Datalink Switching.
The AS400 just thinks that it is
communicating to the controller on the local LAN.
Basically, the routers will listen to the MAC addresses and if they are not
on the local network, they will ask their neighbours if they can reach
them - if they can, the packets will be forwarded on. With DLSw, the routers
will spoof the local acknowledgments to prevent timeouts from occuring. If
you are using bridging, the timers on the controller description may need to
be extended to prevent timeouts.

Mike Buglass
Technical Consultant
DCS eIntegration
Nottingham, England

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