PortChannel Issue

[zeeshanraza]

I am facing an issue, that i connect my laptop with one port of 7609, the port(gi4/47) goes in to Up/Down state continuously due to which my port-channel ports(4/48 & 7/40) goes in err-disabled state and the port-channel goes down. What can be the reason for this

[Leo Laohoo]

Post the output to the command "sh interface Gi 4/47".

[zeeshanraza]

Hi Plx find

OSR1#show interfaces gigabitEthernet 4/47
GigabitEthernet4/47 is down, line protocol is down (notconnect)
  Hardware is C6k 1000Mb 802.3, address is 001d.45b9.f28e (bia 001d.45b9.f28e)
  Description: Reserved for local PC
  MTU 1500 bytes, BW 100000 Kbit, DLY 10 usec,
     reliability 255/255, txload 0/255, rxload 0/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Auto-duplex, Auto-speed
  input flow-control is off, output flow-control is off
  Clock mode is auto
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output never, output hang never
  Last clearing of "show interface" counters 51w4d
  Input queue: 0/2000/221/0 (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
     66193946 packets input, 14862452112 bytes, 0 no buffer
     Received 27417896 broadcasts (162080 multicasts)
     12 runts, 0 giants, 0 throttles
     42 input errors, 19 CRC, 0 frame, 179 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     40589807 packets output, 5427090316 bytes, 0 underruns
     48 output errors, 0 collisions, 0 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
OSR1#

[Leo Laohoo]

Let me rephrase my question ... Can you kindly plug a client back to Gi 4/47 and, if it's stable enough, wait for about 2 minutes and post the output to the command "sh interface Gi 4/47" and "sh counter interface Gi 4/47"?

[zeeshanraza]

currently it's not possible to connect the laptop at Gi4/47 because last time we have faced an outage due to this. So we can't do it without some MW. If you need some further info then plx inform.

[Leo Laohoo]

Post the configuration of Gi 4/47 interface.

[Mitesh Manwatkar]

42 input errors, 19 CRC, 0 frame, 179 overrun, 0 ignored

40589807 packets output, 5427090316 bytes, 0 underruns

This clearly indicates that there is issue with the tx media such as ur UTP/Fiber cable. 

Issue clear counter gi4/47 and test if these number increment even after that.

regards.

[Mitesh Manwatkar]

ensure the port gi4/47 is an access port  and not part of any other etherchannel.

post the o/p of sh run int gi4/47 , sh int gi4/47 switchport and sh run int po " x"