Configuring frame relay settings

1. Select SystemWAN on the Contivity Secure IP Services Gateway menu. The SystemWAN Interfaces screen appears.



2. Select the interface that you want to configure by clicking the associated radio button in the Select column and then clicking Configure.

The SystemWAN InterfacesConfigure screen appears. The System WAN configure screen contains information common to all WAN link protocols and interfaces.



3. Enter an optional description of the interface in the Description field.
4. Enter a unique text name in the Circuit ID field. This field is optional. This is a character string specified by the circuit vendor. It can be useful when communicating with the vendor during troubleshooting.
   
   

   Note: Note that while Circuit ID is defined in the T1/E1 MIB (RFC 1406) it is applicable to almost any WAN connection, so it is configured at the interface level.

   
   
5. Select an Interface Filter from the drop-down list.
6. Select FR from the Protocol drop-down list. The default is PPP.
7. Click Configure. The SystemWAN InterfacesConfigureFrame Relay screen appears.



8. Enable the Debug checkbox to have packet information logged in the Event Log.
9. Choose the connection type, either switched or direct.
   
   To connect to a frame relay gateway, the connection type must be set to "switched." In this mode, the gateway type is user configurable. The gateway type determines both the LMI format and the FECN/BECN processing.
   
   Two Contivity gateways can be directly connected without an intervening frame relay gateway via the interface connection type "direct." When direct mode is selected, LMI messages are disabled and FECN/BECN processing is not performed. The UNI is defined by FRF 1.1.
10. Select the gateway type, either ITU-T, ANSI or ILMI.
11. Enter a value for the LMI (Local Management Interface) poll interval timer. The gateway supports LMI, as defined in ITU-T Q.933 annex A and ANSI T1.617 Annex D. The LMI type is determined by the gateway type parameter when the physical interface is in the switched mode. This parameter also determines the FECN/BECN processing. LMI is disabled when the physical interface is in the direct mode.
• Minimum: 5
• Maximum: 30
• Default: 10
12. Enter a value for the LMI (Local Management Interface) poll interval counter.
• Minimum: 1
• Maximum: 255
• Default: 6
13. Click Configure Virtual Circuit. The SystemWAN InterfacesConfigureFrame RelayVC screen appears. Each frame relay PVC is individually configured.



14. Enter a description. This is the same user-entered text description used by the existing physical interfaces.
15. Select the state for the VC. This is the same as the physical interface enable/disable. There are 4 values: TRUE, TRUE_DEBUG, FALSE, FALSE_DEBUG. The _DEBUG values cause the packet to displayed in the event log.
16. Select the VC protocol, IP MPoFR.
17. Specify the Local IP address (static).
18. Select the interface. This is the same public/private (or untrusted/trusted) parameter used by the existing physical interfaces.
19. Specify the remote IP address (static).
20. Enter a value for the DLCI (Data Link Connection Identifier) parameter.
21. Enter a value for the CIR (Committed Information Rate) parameter. The supported range is 0 to the maximum line speed. The default is 0.
    
    The Contivity gateway supports traffic shaping and congestion control as defined in CCITT I.370. The traffic shaping parameters, CIR, B_c, and B_e, are configured on a per-VC basis. FECN/BECN processing is supported as defined in ANSI T1.618 Annex A. The DE flag is not set. CLLM is not supported.
22. Enter a value for the B_c (Committed Burst Size) parameter. The supported range is 0 to the maximum line speed. The default is 0.
23. Enter a value for the B_e (Excess Burst Size) parameter. The supported range is 0 to the maximum line speed. The default is the maximum line speed.
24. Click Statistics to view collected statistics for the interface.
25. Use the Add button to create and define additional PVCs on the interface.