Port Channel

Unanswered Question
Nov 3rd, 2009
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Hi All:


I have port channel configuration on 4500.

I see input and output rate on the physical interface but not on the logical interface (portchannel).

Any idea why is this behaviour.



#sh interfaces port-channel 50


Port-channel50 is up, line protocol is up (connected)


Hardware is EtherChannel, address is 0014.a90b.c4ce (bia 0014.a90b.c4ce)



MTU 1500 bytes, BW 2000000 Kbit, DLY 10 usec,


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


Encapsulation ARPA, loopback not set


Keepalive set (10 sec)


Full-duplex, 1000Mb/s, media type is N/A


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


Members in this channel: x,x


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


Last input never, output never, output hang never


Last clearing of "show interface" counters 1d03h


Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0


Queueing strategy: fifo


Output queue: 0/40 (size/max)


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


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


4589587589 packets input, 5566463916855 bytes, 0 no buffer


Received 77 broadcasts (0 multicasts)


0 runts, 0 giants, 0 throttles


1 input errors, 1 CRC, 0 frame, 0 overrun, 0 ignored


0 input packets with dribble condition detected


1535337783 packets output, 260332692367 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



#sh int Gix

GigabitEthernetx is up, line protocol is up (connected)

Hardware is Gigabit Ethernet Port, address is 0014.a90b.c4b8 (bia 0014.a90b.c4b8)

MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,

reliability 255/255, txload 2/255, rxload 13/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000-TX

input flow-control is on, output flow-control is on

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

Last input never, output never, output hang never

Last clearing of "show interface" counters 1d23h

Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 52414000 bits/sec, 9493 packets/sec

5 minute output rate 8385000 bits/sec, 4996 packets/sec

1671067266 packets input, 1159009005181 bytes, 0 no buffer

Received 0 broadcasts (0 multicasts)

0 runts, 0 giants, 0 throttles

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

0 input packets with dribble condition detected

831460771 packets output, 159495755200 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


Chao

Vishwa

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Giuseppe Larosa Tue, 11/03/2009 - 11:10
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Hello Vishwa,

what IOS image and what supervisor model are in the box?


post

sh ver | inc image

sh module


it may be related to the IOS version and it could be just a problem related to show commands.

is the port-channel working correctly?


Hope to help

Giuseppe


vishwancc Tue, 11/03/2009 - 20:54
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Hi Giuseppe,


cat4500-entservicesk9-mz.122-40.SG.bin


Mod Ports Card Type Model Serial No.

---+-----+--------------------------------------+------------------+-----------

1 6 Sup V-10GE 10GE (X2), 1000BaseX (SFP) WS-X4516-10GE JAE11043J3T

2 6 Sup V-10GE 10GE (X2), 1000BaseX (SFP) WS-X4516-10GE JAE11043YUK

3 48 10/100/1000BaseT (RJ45) WS-X4548-GB-RJ45 JAE0814AY91

4 24 10/100/1000BaseT (RJ45) WS-X4424-GB-RJ45 JAB063607CG

5 48 10/100/1000BaseT (RJ45) WS-X4548-GB-RJ45 JAE0932HSGW


Yes the port channel is working fine.

Chao

Vishwa

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