AIS AI2524 user manual Define the Virtual Circuit Packet Hold Queue Size, Restrict Map Usage

AI2524 Router Card User’s Manual

face defaults for the flow control parameters, these options must b used to specify the values. Not all networks will allow a PVC to be de- fined with arbitrary flow control values.

Additionally, the Data bit (D-bit) is supported, if negotiated. PVCs allow the D-bit procedure because there is no call setup to negotiate its use. Both restricted and unrestricted fast select are also supported and are transparently handled by the software. No configuration is required for use of the D-bit or fast select facilities.

Define the Virtual Circuit Packet Hold Queue Size

To define the maximum number of packets that can be held whil virtual circuit is unable to send data, type (in interface configuration mode):

x25 hold-queue queue-size

An encapsulation virtual circuit's hold queue size is determined when it is created; the x25 hold-queuecommand does not affect ex- isting virtual circuits. This command also defines the hold queue siz of encapsulation PVCs.

Restrict Map Usage

An X.25 map can be restricted so that it will not be used to place calls or so that it will not be considered when incoming calls are mapped.

To restrict X.25 map usage, use the following map options as needed:

zRestrict incoming calls from a map.

x25 map protocol address [protocol2 address2 [...[protocol9 address9 ]]] x121- address no-incoming

zRestrict outgoing calls from a map.

x25 map protocol address [protocol2 address2 [...[protocol9 address9 ]]] x121- address no-outgoing

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