Frame Relay Debugging Tools Getting the Data Link Connection Identifier ( DLCI ) List Monitor switch polling Internet Control Message Protocol (ICMP) (ping) packet trace Traceroute Port Error Counters definitions Getting the DLCI list There are three ways to get a list of DLCI numbers pointing to other Private Virtual Connections or Circuits (PVC's) from the  switch. Request  it from the telephone company. Frame Relay terminology is sometimes confusing. Verify that your telephone company has provided the correct DLCI numbers. Use the 0x51 debug  turn on the console and observe the display. After about a half dozen exchanges the Frame switch will return all the DLCI numbers programmed into it.  # Sample LMI packet exchange (W1) LMI: Sending Sequence Exchange - Sequence 174 (W1) LMI: Received Sequence Exchange - Sequence 173 (W1) LMI: Sending Sequence Exchange - Sequence 175 (W1) LMI: Received Sequence Exchange - Sequence 174 (W1) LMI: Sending Full Status Enquiry - Sequence 176 (W1) LMI: Received Full Status - Sequence 175 DLCI List: 16 (W1) LMI: Sending Sequence Exchange - Sequence 177 (W1) LMI: Received Sequence Exchange - Sequence 176 (W1) LMI: Sending Sequence Exchange - Sequence 178 (W1) LMI: Received Sequence Exchange - Sequence 177 Use the command  'show arp frm1'. This will show the DLCI numbers associated with their IP addresses. If you have a static DLCI list then these numbers will also appear here. The 'frm1' is the name of the interface. To get a list of all active or suspended interfaces on a PortMaster use the command 'ifconfig'.  Back to Top Monitoring LMI/Annex-D Polling Setting a debug with a mask of 0x51 will show Local Management Interface (LMI) packets being transmitted and received. Three successful exchanges (transmitted and received) are required  to ESTABLISH a connection.  TIP: If   the polling interval is set to once per second  it speeds up the troubleshooting process.  Set it back when debugging session is completed.  Command> set console  Setting CONSOLE to admin session  Command> set debug 0x51  Setting debug value to 0x51    # Sample LMI packet exchange  (W1) LMI: Sending Sequence Exchange - Sequence 174  (W1) LMI: Received Sequence Exchange - Sequence 173  (W1) LMI: Sending Sequence Exchange - Sequence 175  (W1) LMI: Received Sequence Exchange - Sequence 174  (W1) LMI: Sending Full Status Enquiry - Sequence 176  (W1) LMI: Received Full Status - Sequence 175  DLCI List: 16  (W1) LMI: Sending Sequence Exchange - Sequence 177  (W1) LMI: Received Sequence Exchange - Sequence 176  (W1) LMI: Sending Sequence Exchange - Sequence 178  (W1) LMI: Received Sequence Exchange - Sequence 177   To turn the debug off use the following commands:   Command> reset console   Console RESET   Command> set debug 0x0 or off   Setting debug value to 0x0    Back to Top