WAE INLINE and switch Cisco WS-C3524-XL -Link up & down

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Apr 28th, 2010
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Hi everybody ...we are having a really strange issue between a WAE-574 inline port and a WS-C3524-XL...


We already tried to change the switch port , to change the cable , to upgrade IOS on the switch..


But the only solution was to change the switch with another model ( Ex. Cisco 3560) !!


Anyway ...Now customer would like to know why ..


This is the scenario :


WAAS ver 4.1.5


Router 2811 Fa0/0 ---> WAE Inlineport1/1/wan - WAE inlineport 1/1lan---- Fa0/4 Switch WS-C3524-XL


Speed and duplex is forced in every point at full/100. Cable are correct ( Crossover Router to  WAE , Straight WAE to Switch)


The switch port is configured correctly and there are no errors on the interface :


SWITCH#sh interfaces fastEthernet 0/4
FastEthernet0/4 is up, line protocol is up
  Hardware is Fast Ethernet, address is 0009.437c.3fc4 (bia 0009.437c.3fc4)
  Description: ** Router 2 BT **
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 3/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:03, output 00:00:00, output hang never
  Last clearing of "show interface" counters never
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 16000 bits/sec, 8 packets/sec
  5 minute output rate 1368000 bits/sec, 206 packets/sec
     13779 packets input, 4222760 bytes
     Received 1373 broadcasts, 0 runts, 0 giants, 0 throttles
   0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 1373 multicast
     0 input packets with dribble condition detected
     314765 packets output, 177609858 bytes, 0 underruns
   0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

Now link come up and down and we have this error on the WAE-574 :


2010 Apr 28 08:51:46 wae-574 kernel: %WAAS-SYS-3-900000: e1000bp: eth3: e1000bp_watchdog: NIC Link is Down
2010 Apr 28 08:51:46 wa-574 kernel: %WAAS-SYS-3-900000: e1000bp: eth3: e1000bp_watchdog: NIC Link is Up 100 Mbps Full
Duplex
2010 Apr 28 08:51:46 wa-574 kernel: %WAAS-SYS-3-900000: e1000bp: eth2: e1000bp_watchdog: NIC Link is Up 100 Mbps Full
Duplex
2010 Apr 28 08:53:12 wa-574 kernel: %WAAS-SYS-3-900000: e1000bp: eth3: e1000bp_watchdog: NIC Link is Down
2010 Apr 28 08:53:12 wa-574 kernel: %WAAS-SYS-3-900000: e1000bp: eth3: e1000bp_watchdog: NIC Link is Up 100 Mbps Full
Duplex
2010 Apr 28 08:53:13 wa-574 kernel: %WAAS-SYS-3-900000: e1000bp: eth2: e1000bp_watchdog: NIC Link is Up 100 Mbps Full
Duplex


We have seen that some counters increments :


wa-574#sh int inlineport 1/1/lan

Device name        : eth3. Bypass slave interface.
Packets Received   : 8644939
Packets Intercepted: 8382996
Packets Bridged    : 260373
Packets Forwarded  : 5119561
Packets Dropped    : 1750

Packets Received on native      : 0
Active flows for this interface : 0

Ethernet Driver Status
-------------------------
Type:Ethernet
Ethernet address:00:E0:ED:13:97:B5
Maximum Transfer Unit Size:1500
Metric:1
Packets Received: 8644814
Input Errors: 1784
Input Packets Dropped: 0
Input Packets Overruns: 0
Input Packets Frames: 953
Packet Sent: 5252680
Output Errors: 0
Output Packets Dropped: 0
Output Packets Overruns: 0
Output Packets Carrier: 0
Output Queue Length:100
Collisions: 0
Base address:0x4020
Flags:UP BROADCAST RUNNING MULTICAST
Link State: Interface is up,line protocol up
Mode: full-duplex, 100baseTX


ANY IDEA ?


Thanks to everybody will help us.


Vittorio

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Zach Seils Fri, 05/07/2010 - 10:51
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  • Cisco Employee,

Vittorio,


Were you able to test whether the link comes up when the WAE is powered off?  This is the best test to determine whether or not you have a cabling issue.  How often did the link state go up/down?


Regards,

Zach

vpetracca Tue, 05/18/2010 - 06:25
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Hi Zach ... Thanks a lot for your help and to take care on this problem...


Answers to your questions :


Quest   1 - Were you able to test whether the link comes up when the WAE is powered off?

Answer 1 - No we are not able to do it right now , because customer is changing the switch ...


Quest   2  - How often did the link state go up/down?

Answer 2  - Sometimes 1 min 30 sec , sometimes 30 sec... but this is just what i remeber and i saw on logs...May be I'm not perfectly correct...


  

Have a good day


Vittorio

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