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Community Member

port-channel1 is down (BPDUGuard errDisable)

Hello All,

I am experiencing a problem while trying to create port-channel interface. The interface did not come up. If i look at the

show interface port-channel ,

c5548p-3# show interface port-channel 1

port-channel1 is down (BPDUGuard errDisable)

  Hardware: Port-Channel, address: 0000.0000.0000 (bia 0000.0000.0000)

  MTU 1500 bytes, BW 100000 Kbit, DLY 10 usec

  reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA

  Port mode is trunk

  auto-duplex, 10 Gb/s

  Input flow-control is off, output flow-control is off

  Switchport monitor is off

  EtherType is 0x8100

  Members in this channel: Eth1/17

  Last clearing of "show interface" counters never

  30 seconds input rate 0 bits/sec, 0 packets/sec

  30 seconds output rate 0 bits/sec, 0 packets/sec

  Load-Interval #2: 5 minute (300 seconds)

    input rate 0 bps, 0 pps; output rate 0 bps, 0 pps


    0 unicast packets  163 multicast packets  0 broadcast packets

    163 input packets  19383 bytes

    0 jumbo packets  0 storm suppression bytes

    0 runts  0 giants  0 CRC  0 no buffer

    0 input error  0 short frame  0 overrun   0 underrun  0 ignored

    0 watchdog  0 bad etype drop  0 bad proto drop  0 if down drop

    0 input with dribble  0 input discard

    0 Rx pause


    0 unicast packets  576 multicast packets  89 broadcast packets

    665 output packets  84347 bytes

    0 jumbo packets

    0 output errors  0 collision  0 deferred  0 late collision

    0 lost carrier  0 no carrier  0 babble 0 output discard

    0 Tx pause

  1 interface resets

Not sure what is causing this error. Could any one please throw some light how to fix this?


Everyone's tags (2)
Community Member

port-channel1 is down (BPDUGuard errDisable)

Adding few more information

It is a c5548p switch with fimware 5.2(1)N1(1)

Community Member

port-channel1 is down (BPDUGuard errDisable)

without the configuration of the prot hard to say BPDUGuard is enabled when a port is is portfast mode. The port then shuts down when a BPDU is received. What is at the other end of the port-channel?

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