Ref: 10630012
Title: Using GS/X.25-IP MaxIncomingPort/MaxOutgoingPort/MaxTwoWayPort
Date: 4/25/91

Copyright 3Com Corporation, 1991.  All rights reserved.

The MaxIncomingPort/MaxOutgoingPort/MaxTwoWayPort parameter allows the
network administrator to allocate and limit the number of ports dedicated
to incoming calls, outgoing calls, and two-way calls.  The sum of the ports
must be less than or equal to the number of ports assigned to the line.
Additionally, the sum of the ports must not exceed the number of virtual
circuits assigned to that same line.

For example, if line 0 has 15 virtual circuits and ports assigned to it,
and there are no static routes defined, then those 15 virtual circuits will
be dedicated to connection service.  The network administrator could then
limit the directional usage of the virtual circuits to enable only 3 virtual
circuits for MaxIncomingPort calls, 12 virtual circuits for MaxOutgoingPort
calls and 0 virtual circuits for MaxTwowayPort calls.  As a result, if 3
incoming calls are established and a fourth is attempted, that fourth call
would not be possible.

Alternatively, rather than having 12 virtual circuits defined for
MaxOutgoingPorts calls, if 3 virtual circuits were defined and 9 virtual
circuits were assigned to MaxTwowayPort calls, given the above example with
a fourth call, the call would be completed if the maximum number of
MaxTwowayPort calls available was not yet reached.

If the network administrator does not wish to restrict the direction of
calls, then the MaxIncomingPort and MaxOutgoingPort must be set to zero.
The MaxTwowayPort value should then be set to less than or equal to the
number of virtual ciruits and ports assigned to the line in question.

The command syntax is as follows:

    Setdefault Line <line number> MaxIncomingPort = { 0 - 48 }
    Setdefault Line <line number> MaxOutgoingPort = { 0 - 48 }
    Setdefault Line <line number> MaxTwowayPort = { 0 - 48 }

Again, the sum of the ports must not exceed the number of virtual
circuits assigned to the line and the total of 48 ports for the
GS/X.25-IP.

Note:  The parameter changes will not take effect until the GS/X.25-IP is
REBOOTed.

