Re: X25 routing?

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1 total messages Started by Allan Leinwand Tue, 11 Sep 1990 16:41

#667

Author: Allan Leinwand
Date: Tue, 11 Sep 1990 16:41

31 lines
1675 bytes

Hello Chris,

>I am exploring the use of cisco routers on a network which includes
>both x25 and ethernet (ethertalk, TCP/IP, Novell.)  What I am
>wondering is what is the most efficient routing method for this kind
>of network?  X.25 or tcp/ip? 

On the network setup shown, probably the most efficient routing method
will be TCP/IP.  This will allow dynamic routing, whereas X.25 would
require some static configuration.  Thus, I would configure the
interfaces to the PADs and X.25 hosts as 'encapsulation x25' and have
the serial links be HDLC.  This will result in the lowest amount of
protocol overhead for your traffic.

The two things which might affect this decision could be traffic volume
and performance.  If the volume of traffic between the X.25 hosts is
significantly greater than the TCP/IP traffic, obviously you want to
lean toward X.25 routing.  As far as performance goes, we have seen
instances where customers need almost instantaneous response from PADs
(because of operators typing at terminals). If this is the case it
may be smarter to use X.25 routing as well.

Thanks,

Allan Leinwand
cisco Systems
leinwand@cisco.com
(415) 688-7653

"Time was invented so that everything does not happen at once."
                    - Buckaroo Banzai

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