Frame Relay question

If looking at the output from a "#show interface" command, what would indicate you are looking at Frame Relay as opposed to any other WAN protocol?

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TurK-FX

Encapsulation Frame-Relay line indicates that it is frame relay

havenlad

There's no encapsulation line on the screen. I think they took it out so make us think outside the box so to speak

TheNewITGuy

You can also show a show frame-relay pvc and it'll show you the interface(s)

Router#

show frame pvc

PVC Statistics for interface Serial0/0/0 (Frame Relay DTE)

Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 3 0 0 0

example:

Router#show interface serial1/2
Serial1/2 is up, line protocol is up
Hardware is CD2430 in sync mode
Internet address is 172.16.1.1/24
MTU 1500 bytes, BW 128 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation FRAME-RELAY, loopback not set <-- here
Keepalive set (10 sec)
LMI enq sent 131, LMI stat recvd 116, LMI upd recvd 0, DTE LMI up <-- LMI reference
LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
LMI DLCI 1023 LMI type is CISCO frame relay DTE <-- DLCI reference
FR SVC disabled, LAPF state down <-- FR SVC
Broadcast queue 0/64, broadcasts sent/dropped 9/0, interface broadcasts 0
Last input 00:00:03, output 00:00:03, output hang never
Last clearing of "show interface" counters 00:24:10
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue :0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
241 packets input, 8933 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
164 packets output, 2865 bytes, 0 underruns
0 output errors, 0 collisions, 10 interface resets
0 output buffer failures, 0 output buffers swapped out
2 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up

rscrt

LMI statistics could be the hint?

havenlad

That's it.....was going to put a whole page of junk that would've taken ages but you've saved me the hassle. Thanks. There's an LMI status message...just looking this up now and it seems Jeremy has missed a lot out if it goes into the depth Chris Bryant seems to suggest regarding frame relay on the ICND1

Thanks for the input

d6bmg

havenlad wrote: »

If looking at the output from a "#show interface" command, what would indicate you are looking at Frame Relay as opposed to any other WAN protocol?

Use the global command:
show interface serial 1/0 (or the corresponding interface you are applying frame relay on).

In the output:

Serial1/0 is up, line protocol is up
  Hardware is M4T
  Internet address is 192.168.15.1/24
  MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
 [B] Encapsulation FRAME-RELAY[/B], crc 16, loopback not set
  Keepalive set (10 sec)
  Restart-Delay is 0 secs