From: Gary Duncanson (gary.duncanson@googlemail.com)
Date: Sat Dec 29 2007 - 09:32:18 ART
Michael,
When having issues with frame-switch and routers I find most errors are in
these areas..
bad cable connect
cable wrong way around
wrong DTE/DCE on end
no clockrate
lmi type fun
frame-route problems on the frame switch
interface shutdown
HTH
Gary
----- Original Message -----
From: <M_A_Jones@Dell.com>
To: <ccielab@groupstudy.com>; <nobody@groupstudy.com>
Sent: Friday, December 28, 2007 9:42 PM
Subject: RE: Frame-Relay experts!!!!
> Thanks for the replys, I found the issue, when doing a sho frame-relay
> lmi, on the Frame-relay switch, I noticed that the config had dte on
> serial 5, so i statically changed it , and it came back up. My only
> question is why when plugging in router 4 or router 3 did they
> renegotiate the link to dce, and not DTE ? Like router 5 did, it almost
> seems like router 5 couldnt auto sense like the other routers??????
> STRANGE!?
>
>
> Michael Jones
> Network Engineer
> Global Network Operations
> Dell Inc. | Information Technology
> W. 512.723.3268 | C. 512.966.6908
>
>
>> _____________________________________________
>> From: Jones, Michael A - Authorized Dell Representative
>> Sent: Friday, December 28, 2007 11:50 AM
>> To: ccielab@groupstudy.com; 'nobody@groupstudy.com'
>> Subject: Frame-Relay experts!!!!
>>
>> Experts,
>>
>> Having a problem with a Frame Relay interface, for some reason cant
>> get router in up up state with framerelay switch.
>> Encapsulation is being austosensed to HDLC ?? Instead of Frame-relay.
>>
>>
>> Serial2/0 is up, line protocol is up
>> Hardware is M4T
>> MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
>> reliability 255/255, txload 1/255, rxload 1/255
>> Encapsulation HDLC, crc 16, loopback not set
>> Keepalive set (10 sec)
>> Restart-Delay is 0 secs
>> Last input never, output never, output hang never
>> Last clearing of "show interface" counters 00:01:13
>> Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops:
>> 0
>> Queueing strategy: weighted fair
>> Output queue: 1/1000/64/0 (size/max total/threshold/drops)
>> Conversations 1/1/256 (active/max active/max total)
>> Reserved Conversations 0/0 (allocated/max allocated)
>> Available Bandwidth 1158 kilobits/sec
>> 5 minute input rate 0 bits/sec, 0 packets/sec
>> 5 minute output rate 0 bits/sec, 0 packets/sec
>> 0 packets input, 0 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
>> 2 packets output, 634 bytes, 0 underruns
>> 0 output errors, 0 collisions, 2 interface resets
>> 0 output buffer failures, 0 output buffers swapped out
>>
>>
>> So I staticly set its encapsulation to Frame-relay, it goes up for a
>> second, then line protocol drops.
>>
>> Rack1R5(config)#int serial 2/0
>> Rack1R5(config-if)#encapsulation frame-relay
>> Rack1R5(config-if)#end
>> Rack1R5#sho int
>> *Mar 2 16:03:49.195: %SYS-5-CONFIG_I: Configured from console by
>> console
>> *Mar 2 16:03:49.511: %LINEPROTO-5-UPDOWN: Line protocol on Interface
>> Serial2/0,
>> changed state to up se
>> Rack1R5#sho int serial 2/0
>> Serial2/0 is up, line protocol is up
>> Hardware is M4T
>> MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
>> reliability 255/255, txload 1/255, rxload 1/255
>> Encapsulation FRAME-RELAY, crc 16, loopback not set
>> Keepalive set (10 sec)
>> Restart-Delay is 0 secs
>> LMI enq sent 0, LMI stat recvd 0, LMI upd recvd 0, DTE LMI up
>> LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
>> LMI DLCI 1023 LMI type is CISCO frame relay DTE
>> FR SVC disabled, LAPF state down
>> Broadcast queue 0/64, broadcasts sent/dropped 0/0, interface
>> broadcasts 0
>> Last input never, output never, output hang never
>> Last clearing of "show interface" counters 00:00:06
>> Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops:
>> 0
>> Queueing strategy: weighted fair
>> Output queue: 1/1000/64/0 (size/max total/threshold/drops)
>> Conversations 1/2/256 (active/max active/max total)
>> Reserved Conversations 0/0 (allocated/max allocated)
>> Available Bandwidth 1158 kilobits/sec
>> 5 minute input rate 0 bits/sec, 0 packets/sec
>> 5 minute output rate 0 bits/sec, 0 packets/sec
>> 0 packets input, 0 bytes, 0 no buffer
>> --More--
>>
>> 2 secoonds Later, see below.
>>
>> Rack1R5#sho int serial 2/0
>> Serial2/0 is up, line protocol is down
>> Hardware is M4T
>> MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
>> reliability 255/255, txload 1/255, rxload 1/255
>> Encapsulation FRAME-RELAY, crc 16, loopback not set
>> Keepalive set (10 sec)
>> Restart-Delay is 0 secs
>> LMI enq sent 19, LMI stat recvd 0, LMI upd recvd 0, DTE LMI down
>> LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
>> LMI DLCI 1023 LMI type is CISCO frame relay DTE
>> FR SVC disabled, LAPF state down
>> Broadcast queue 0/64, broadcasts sent/dropped 0/0, interface
>> broadcasts 0
>> Last input never, output never, output hang never
>> Last clearing of "show interface" counters 00:03:19
>> Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops:
>> 0
>> Queueing strategy: weighted fair
>> Output queue: 26/1000/64/0 (size/max total/threshold/drops)
>> Conversations 1/2/256 (active/max active/max total)
>> Reserved Conversations 0/0 (allocated/max allocated)
>> Available Bandwidth 1158 kilobits/sec
>> 5 minute input rate 0 bits/sec, 0 packets/sec
>> 5 minute output rate 0 bits/sec, 0 packets/sec
>> 0 packets input, 0 bytes, 0 no buffer
>>
>> So I do a sho frame-relay lmi int serial 2/0
>>
>> Rack1R5#sho frame-relay lmi int serial 2/0
>>
>> LMI Statistics for interface Serial2/0 (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 26 Num Status msgs Rcvd 0
>> Num Update Status Rcvd 0 Num Status Timeouts 25
>> Last Full Status Req 00:00:03 Last Full Status Rcvd never
>>
>> All hardware is correct, have switched configs with router 4 and
>> plugged into frame-relay switch same port as router 5, comes up no
>> problem.
>> There is clearly a problem with router 5.
>>
>> Check this out!
>>
>>
>> LMI Statistics for interface Serial4 (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 2 Invalid Report IE Len 0
>> Invalid Report Request 0 Invalid Keep IE Len 0
>> Num Status Enq. Rcvd 156 Num Status msgs Sent 154
>> Num Update Status Sent 0 Num St Enq. Timeouts 0
>>
>> LMI Statistics for interface Serial5 (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 0 Num Status msgs Sent 0
>> Num Update Status Sent 0 Num St Enq. Timeouts 103
>>
>> So, it looks like staus enq are not being sent or recieved.. Id think
>> this would be a "keepalive timer not matching issue"
>> But both timers are staticly set to 10 sec, I even switched them to 30
>> seconds together still timeouts ! Clockrate has been set to 64000
>> also.
>>
>> debug output from router 5
>>
>> Rack1R5#debug frame-relay lmi
>> Frame Relay LMI debugging is on
>> Displaying all Frame Relay LMI data
>> Rack1R5#
>> *Mar 2 16:20:24.751: Serial2/0(out): StEnq, myseq 14, yourseen 0, DTE
>> down
>> *Mar 2 16:20:24.751: datagramstart = 0x7B89654, datagramsize = 13
>> *Mar 2 16:20:24.751: FR encap = 0xFCF10309
>> *Mar 2 16:20:24.751: 00 75 01 01 00 03 02 0E 00
>> *Mar 2 16:20:24.751:
>> *Mar 2 16:20:34.751: Serial2/0(out): StEnq, myseq 15, yourseen 0, DTE
>> down
>> *Mar 2 16:20:34.751: datagramstart = 0x7900FD4, datagramsize = 13
>> *Mar 2 16:20:34.751: FR encap = 0xFCF10309
>> *Mar 2 16:20:34.751: 00 75 01 01 00 03 02 0F 00
>> *Mar 2 16:20:34.751:
>>
>> Help !!!!!!!!!
>>
>>
>>
>> Michael Jones
>> Network Engineer
>> Global Network Operations
>> Dell Inc. | Information Technology
>> W. 512.723.3268 | C. 512.966.6908
>
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