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There are three verification commands and one troubleshooting command you should be familiar with for the exam.
The three commands you can use to verify your configuration are
• show frame-relay lmi
• show frame-relay pvc
• show frame-relay map
show frame-relay lmi will show LMI statistics, including the number of status enquiries sent and received. Because the status enquiries and responses are used as continuous keepalives, these should be incrementing.
LMI Statistics for interface Serial1 (Frame Relay DTE) LMI TYPE = ANSI
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 140 Num Status msgs Rcvd 139
Num Update Status Rcvd 0 Num Status Timeouts 0
show frame-relay pvc will inform you to the status of your PVC. The status should read ACTIVE. This is also where you will see if your router is receiving BECN and FECN messages.
DLCI = 100, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/0
input pkts 120 output pkts 70 in bytes 5122
out bytes 3366 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 7 out bcast bytes 1366
pvc create time 1d04h, last time pvc status changed 00:30:32
show frame-relay map will show you any static maps configured and maps created by inverse-arp. This command will also show you the status of your PVC.
Serial0/0 (up): ip 10.0.0.1 dlci 100(0x64,0x1840), dynamic,
broadcast,, status defined, active
For troubleshooting, you can execute the debug frame-relay lmi command. This command shows you LMI messages in real-time:
Serial 0/0 (out) : StEnq, clock 202121241, myseq 120, mineseen,
119, yourseen 140, DTE up
PVC IE 0x64, length 0x6, dlci 100, status 0, bandwidth 64000
Posted by jame_kristopher
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