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# Link Editor

Advanced Configuration: LAPB, WAN LLC2 MLP Addressing CUG and Facilities Link Modes PVC Options Throughput Timers and Counters Special X32 Authentication |  | Link Number The number of the link that you want to configure. Link Description The name of the configuration template is displayed here. You can enter a different description. Link Type Select one of the following: WAN (1988), WAN (1984), WAN (1980), LAN, or MLP (multi-link protocol). If you set the link type to MLP, you will also need to set the number of physical links. Device Select the link level device from the device types list. Port Number The port number of the LAN or WAN device used beneath X.25. The Device type plus Port Number must form a unique identifier for each link. Frame Window Sizes Window sizes can be in the range 1 to 7 for modulo 8 networks, or 1 to 127 for modulo 128 networks. Interface This applies to WAN connections only. Choose between DTE and DCE. If you are connecting to a PSDN via a modem, the machine running the software is the DTE and the modem acts as the DCE. If you are connecting two machines back-to-back, make one DTE and the other DCE. LAP Protocol This applies to WAN connections only. Choose between LAP, LAPB and LAPBE. Almost all PSDNs use LAPB. Local X.121 Address For WANs this is your DTE or DCE address, and consists of a DNIC, NTN, and, optionally, a subaddress. Your service provider should provide you with the address. Note -- A few public networks require a subaddress, not the full X.121 address. For LANs, enter a six-byte (12 hexadecimal) digit address. The default of twelve zeroes indicates the default MAC address. To use the MAC address stored on an interface controller card, enter that address as twelve consecutive hexadecimal digits, or as pairs of hexadecimal digits, with colons between each pair and leading zeroes within pairs omitted. Version This is the X.25 Recommendation version that your PSDN conforms to--1980, 1984, or 1988. Forced Packet Size Sets the packet size for all priority call requests and incoming calls. Possible values are: Default, 16, 32, 64, 128, 256, 512, 1024, 2048 and 4096. In the configuration file, packet sizes are expressed as powers of 2. For example, to specify 128, enter 7. Local Channel Ranges For each virtual circuit, you must match the range of channel numbers specified by your PSDN. For back-to-back or LAN connections, you must match the ranges used by the remote hosts with which you intend to communicate. For more information, see Chapter 7 in the "Solstice X.25 9.2 Administration Guide".