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New Member

Port err-disabled on Port Channel

In My environment, there is a stact between 3750G and 3650G with port channel, now one port of the port channel group was down, below is output. please help to give a solution!!! Thanks! (The MAC is from wireless Card of laptop, so I guess this was caused by Wireless roaming)

Host xxxx.xxxx.xxxx in vlan 3 is flapping between port Gi1/0/14 and port Po

CPOCW01#show inter g1/0/25

GigabitEthernet1/0/25 is down, line protocol is down (err-disabled)

  Hardware is Gigabit Ethernet, address is 0017.5966.6f19 (bia 0017.5966.6f19)

  Description: sssss

  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,

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

  Encapsulation ARPA, loopback not set

  Keepalive not set

  Auto-duplex, Auto-speed, link type is auto, media type is 1000BaseSX SFP

  input flow-control is off, output flow-control is unsupported

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input 14w5d, output 14w5d, output hang never

  Last clearing of "show interface" counters never

  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

     73453 packets input, 14847139 bytes, 0 no buffer

     Received 1882 broadcasts (1491 multicasts)

     0 runts, 0 giants, 0 throttles

     154 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog, 1491 multicast, 0 pause input

     0 input packets with dribble condition detected

     127307 packets output, 38448922 bytes, 0 underruns

     0 output errors, 0 collisions, 1 interface resets

     0 babbles, 0 late collision, 0 deferred

     0 lost carrier, 0 no carrier, 0 PAUSE output

     0 output buffer failures, 0 output buffers swapped out CPOCW01#show inter g1/0/25

interface GigabitEthernet1/0/25

description: sssss

switchport trunk encapsulation dot1q

switchport mode trunk

channel-group 10 mode on

5 REPLIES
Hall of Fame Super Gold

Port err-disabled on Port Channel

Post the following output:

1.  sh interface status err;

2.  sh etherchann 1 summary;

3.  sh log

New Member

Port err-disabled on Port Channel

show inter status err-disabled

Port      Name               Status       Reason               Err-disabled Vlan
s
Gi1/0/25  sssss            err-disabled link-flap

---------------------------------------------------------------------------------------

show etherchannel 10 summary
Flags:  D - down        P - bundled in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        U - in use      f - failed to allocate aggregator

        M - not in use, minimum links not met
        u - unsuitable for bundling
        w - waiting to be aggregated
        d - default port


Number of channel-groups in use: 1
Number of aggregators:           1

Group  Port-channel  Protocol    Ports
------+-------------+-----------+-----------------------------------------------
10     Po10(SU)         -        Gi1/0/25(D) Gi1/0/26(P)

-------------------------------------------------------------------------------------

show log hist
Syslog History Table:1 maximum table entries,
saving level warnings or higher
434697 messages ignored, 0 dropped, 0 recursion drops
3720 table entries flushed
SNMP notifications enabled, 3721 notifications sent
   entry number 3721 : SW_MATM-4-MACFLAP_NOTIF
    Host 400e.8548.ad24 in vlan 3 is flapping between port Gi1/0/14 and port Po
10
    timestamp: 75698164

------------------------------------------------------------------------------------------------

sho log


    Console logging: level debugging, 438342 messages logged, xml disabled,
                     filtering disabled
    Monitor logging: level debugging, 0 messages logged, xml disabled,
                     filtering disabled
    Buffer logging:  level debugging, 438342 messages logged, xml disabled,
                    filtering disabled
    Exception Logging: size (4096 bytes)
    Count and timestamp logging messages: disabled
    File logging: disabled
    Persistent logging: disabled
    Trap logging: level informational, 438333 message lines logged

Log Buffer (4096 bytes):
3:55.525: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.3.3 (Vlan3) i
s up: new adjacency
*Jun 12 22:14:00.223: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is down: retry limit exceeded
*Jun 12 22:14:04.191: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is up: new adjacency
*Jun 12 22:15:15.225: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is down: retry limit exceeded
*Jun 12 22:15:18.631: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is up: new adjacency
*Jun 12 22:15:23.941: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is down: retry limit exceeded
*Jun 12 22:15:27.565: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is up: new adjacency
*Jun 12 22:16:38.390: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is down: retry limit exceeded
*Jun 12 22:16:41.729: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is up: new adjacency
*Jun 12 22:16:47.332: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is down: retry limit exceeded
*Jun 12 22:16:51.300: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is up: new adjacency
*Jun 12 22:18:01.462: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is down: retry limit exceeded
*Jun 12 22:18:04.289: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is up: new adjacency
*Jun 12 22:18:11.034: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is down: retry limit exceeded
*Jun 12 22:18:15.178: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is up: new adjacency
*Jun 12 22:19:23.981: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is down: retry limit exceeded
*Jun 12 22:19:27.051: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is up: new adjacency
*Jun 12 22:19:34.861: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is down: retry limit exceeded
*Jun 12 22:19:37.176: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is up: new adjacency
*Jun 12 22:20:46.752: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is down: retry limit exceeded
*Jun 12 22:20:50.040: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is up: new adjacency
*Jun 12 22:20:56.902: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is down: retry limit exceeded
*Jun 12 22:20:59.662: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is up: new adjacency
*Jun 12 22:22:09.790: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is down: retry limit exceeded
*Jun 12 22:22:12.508: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is up: new adjacency
*Jun 12 22:22:19.429: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is down: retry limit exceeded
*Jun 12 22:22:23.606: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is up: new adjacency
*Jun 12 22:23:32.242: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is down: retry limit exceeded
*Jun 12 22:23:35.883: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is up: new adjacency
*Jun 12 22:23:43.348: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is down: retry limit exceeded
*Jun 12 22:23:46.939: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is up: new adjacency
*Jun 12 22:24:55.633: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is down: retry limit exceeded
*Jun 12 22:24:58.678: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.4.
3 (Vlan4) is up: new adjacency
*Jun 12 22:25:06.647: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is down: retry limit exceeded
*Jun 12 22:25:11.085: %DUAL-5-NBRCHANGE: EIGRP-IPv4:(10) 10: Neighbor 192.168.200
.2 (Vlan200) is up: new adjacency

Hall of Fame Super Gold

Port err-disabled on Port Channel

Link went into error disable because the link "flapped".  Enable the port and observe.

New Member

Port err-disabled on Port Channel

I will shut down it and no shut it, and observe it, issue again, will update to here!

Hall of Fame Super Gold

Re: Port err-disabled on Port Channel

154 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

If the port go into another error-disable soon, replace the fibre optic patch cables.

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