X.25/ACC Configuration Constraints

Before configuring your X.25/ACC Mux Subsystem, you should consider the following configuration constraints.

Table 3-1 Constraint Table

Configuration Constraint	No. of Ports
Configuration Constraint	8-Ch
Max. No. Cards per System^[1]	48
Max. No. Ports per Card	8
Max. No. Subchannels per Port	1
Max. No. Links per System	480
Max. No. X.25 Links per Card^[2]	8
Max. No. Virtual Circuits per X.25 Link^[3]	254/1023
Max. No. X.25 Virtual Circuits per Card	2032/8184
Max. No. X.25 Virtual Circuits per System^[4]	16,256
^[1]Physical limit: Other factors such as throughput, etc., may further limit the number of usable cards per system. ^[2]A “X.25 Link” for an 8-channel card is a port. ^[3]The Z7340A card can support up to 1023 VCs per port and 8184 VCs per card. All other 8-port ACC cards have a maximum of 254 VCs per port. ^[4]If you mix different ACC cards in the same system, this maximum for the whole system will be the maximum for the card with the largest Virtual Circuits per System value.

The above numbers are theoretical limits and may imply a throughput greater than what the operating system and X.25/ACC system can actually handle. The above numbers are for planning purposes only.

If you subscribe to a public network, the network provider must identify the proper settings for all of the Level 2 and most of the Level 3 parameters. These values differ between network providers and the type of service to which you subscribe. Refer to your network subscription to determine the correct values to enter for your configuration.

Note that these constraints only apply to the X.25/ACC product. These constraints do not necessarily apply when the low-level programmatic interface provided with the ACC product is used.

X.25/ACC Configuration Constraints

Technical documentation

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