1-18Configuring PVCsThe following is an example of how to create a virtual path on an SFCS-1000.To create a through path going in port 2A1, vpi 1 on on the switch boardinstalled in slot 2 and going out port 4B1, vpi 1 on on the switch boardinstalled in slot 4, enter the following:localhost::configuration vpc> new 2a1 1 2e4 1localhost::configuration vpc> new 2e4 1 2a1 1localhost::configuration vpc> new 4b1 1 4e2 1localhost::configuration vpc> new 4e2 1 4b1 1In the first line in the first pair, notice that the output port is 2E4. This is theintra-fabric port. The 2 means the connection is coming out of the switchboard in slot 2 through the intra-fabric port. The E represents the intra-fabricport. The 4 means the connection is destined for switch board in slot 4. 2E4then becomes the input port in the second line.In the first line in the second pair, notice that the output port is 4E2. This is theintra-fabric port. The 4 means the connection is coming out of the switchboard in slot 4 through the intra-fabric port. The E represents the intra-fabricport. The 2 means the connection is destined for switch board in slot 2. 4E2then becomes the input port in the second line.At the same time, a command is entered automatically into the current config-uration database, which means that this virtual path will be created everytime the SCP is restarted.1.5.1.1 Terminating a PVC at a SwitchSometimes it is necessary to create a PVC between a host and a switch fabricthat is at a remote location. In this case, the PVC should be created from thehost to the control port (CTL) of the SCP and vice versa.Some additional configuration is necessary for communication to be estab-lished between the host and the switch fabric. The SCP needs an entry in itsATM ARP cache in order to send cells destined for the host with the correctVPI and VCI and to pass received cells with a specific VPI and VCI to IP. Thisconfiguration can be done using AMI as shown in the following subsections.(See the atmarp (8c) man page for more information.)
