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New Member

sh frame relay lmi shows ---Num Status Timeouts - Back to Back connection

Hi ,

Happy New Year to everyone.

I configured Frame Relay Back to Back between 2 routers with LMI.

Router 1 is acting as frame relay switch

Config of R1

2691Router#sh frame-relay lmi

LMI Statistics for interface Serial1/0 (Frame Relay DCE) LMI TYPE = CISCO

  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. Rcvd 448              Num Status msgs Sent 448***************************************************

  Num Update Status Sent 0              Num St Enq. Timeouts 0

2691Router#sh run int se1/0

Building configuration...

Current configuration : 175 bytes

!

interface Serial1/0

ip address 192.168.2.1 255.255.255.0

encapsulation frame-relay

serial restart-delay 0

frame-relay interface-dlci 103

frame-relay intf-type dce

end

R2 Config

2650Router#sh run int se0/1

Building configuration...

Current configuration : 148 bytes

!

interface Serial0/1

ip address 192.168.2.2 255.255.255.0

encapsulation frame-relay

serial restart-delay 0

frame-relay interface-dlci 103

end

2650Router#sh frame-relay lmi

LMI Statistics for interface Serial0/1 (Frame Relay DTE) LMI TYPE = CISCO

  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 3311             Num Status msgs Rcvd 490

  Num Update Status Rcvd 0              Num Status Timeouts 2823***************************************************************8

  Last Full Status Req 00:00:02         Last Full Status Rcvd 00:00:02

Both routers have keepalive of 10 secs and LMI type is Cisco.Then also i am getting

Num status timeouts on R2 router?

Is this due to LAb design where i have back to back connection?

If someone can explain me please  that why i am getting Num status timeouts on R2?

Thanks

MAhesh

6 REPLIES
VIP Super Bronze

sh frame relay lmi shows ---Num Status Timeouts - Back to Back c

He Mahesh, Happy New Year

On both routers, can you issue "no keepalive" and test again?

also, are both interface are in up and up mode?

HTH

New Member

sh frame relay lmi shows ---Num Status Timeouts - Back to Back c

Hi Reza,

Happy New Year.

Both interfaces are up up.

I did no keepalive on both sides then both interfaces are up up.

but when i do


2691Router#       sh frame-relay lmi

2691Router#

no LMI on both  routers A and B.

As per mu understanding if we do no keepalive that disables LMI between both routers.

Thanks

Mahesh

VIP Super Bronze

sh frame relay lmi shows ---Num Status Timeouts - Back to Back c

Hi Mshesh,

That is correct.  Since there is no frame relay switch, and your interfaces are configured back-to-back, there is no need for LMI.

have a look at this doc for exanple:

http://www.ine.com/resources/backtoback-framerelay.htm

HTH

New Member

sh frame relay lmi shows ---Num Status Timeouts - Back to Back c

Hi Reza,

Thanks for reply.

I know the INE example and i have config both back to back on my routers that is with and without LMI.

I check the cisco output

INFO: Interface Serial0/1 is configured as a DTE, using LMI type CISCO. This type of interface should be attached to a frame-relay switch. Examples of a frame-relay switch are either a router with 'frame-relay switching' enabled and whose interface is configured as a DCE, or a traditional frame-relay service provider (such as a circuit vendor). On Interface Serial0/1: WARNING: The number of LMI status inquiries sent (Num Status Enq. Sent) and the number of LMI status messages received (Num Status msgs Rcvd) are out of sync. 74.28346% of the requests that this router has made to the service provider have gone unanswered. TRY THIS: Watch these three counters for the next 30 seconds

.   1. If 'Num Status Enq. Sent' and 'Num Status msgs Rcvd' are incrementing      equally, and 'Num Status Timeouts' isn't incrementing at all, then LMI is      being exchanged between this router and the remote frame-relay switch. This      indicates a healthy state.

2. If 'Num Status Enq. Sent' and 'Num Status Timeouts' are incrementing equally,      but 'Num Status msgs Rcvd' isn't incrementing at all, then there is a problem      with the logical or physical connectivity between this and the remote      frame-relay switch. Make sure the physical connectivity is good, that the      remote frame-relay switch owner has configured their equipment correctly,      and that both the local switch and the remote frame-relay switch are using      the same LMI type (ANSI, CISCO, or CCITT/Q933A).

in my case sent and receive are increasing equally that is i have case 1 as per cisco note above.

No of time out is not incrementing.So as per cisco it seems ok

2650Router#sh frame-relay lmi

LMI Statistics for interface Serial0/1 (Frame Relay DTE) LMI TYPE = CISCO

  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 75               Num Status msgs Rcvd 74

  Num Update Status Rcvd 0              Num Status Timeouts 1

  Last Full Status Req 00:00:12         Last Full Status Rcvd 00:00:12

2650Router#sh frame-relay lmi

LMI Statistics for interface Serial0/1 (Frame Relay DTE) LMI TYPE = CISCO

  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 76               Num Status msgs Rcvd 75

  Num Update Status Rcvd 0              Num Status Timeouts 1

  Last Full Status Req 00:00:22         Last Full Status Rcvd 00:00:22

2650Router#sh frame-relay lmi

LMI Statistics for interface Serial0/1 (Frame Relay DTE) LMI TYPE = CISCO

  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 76               Num Status msgs Rcvd 75

  Num Update Status Rcvd 0              Num Status Timeouts 1

  Last Full Status Req 00:00:27         Last Full Status Rcvd 00:00:27

2650Router#sh frame-relay lmi

LMI Statistics for interface Serial0/1 (Frame Relay DTE) LMI TYPE = CISCO

  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 76               Num Status msgs Rcvd 75

  Num Update Status Rcvd 0              Num Status Timeouts 1

  Last Full Status Req 00:00:29         Last Full Status Rcvd 00:00:29

2650Router#sh frame-relay lmi

LMI Statistics for interface Serial0/1 (Frame Relay DTE) LMI TYPE = CISCO

  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 77               Num Status msgs Rcvd 76

  Num Update Status Rcvd 0              Num Status Timeouts 1

  Last Full Status Req 00:00:31         Last Full Status Rcvd 00:00:31

2650Router#

thanks

mahesh

VIP Super Bronze

sh frame relay lmi shows ---Num Status Timeouts - Back to Back c

Mahesh,

Are the number of input and output packets the same?

sh fram pvc 103

HTH

New Member

sh frame relay lmi shows ---Num Status Timeouts - Back to Back c

Hi Reza,

Sorry for late reply

Here is info from R2

2650Router#sh frame pvc 103

PVC Statistics for interface Serial0/1 (Frame Relay DTE)

DLCI = 103, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/1

  input pkts 34            output pkts 21           in bytes 1156******************8
  out bytes 714            dropped pkts 0           in pkts dropped 0
  out pkts dropped 0                out bytes dropped 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 21        out bcast bytes 714
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
  pvc create time 09:48:18, last time pvc status changed 03:00:53

shows input and output packets are not same

thanks

mahesh

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