EtherChannel Load Balancing

[johnlloyd_13]

hi all,

we are using a 6509 with L2 etherchannel configured. could someone enlighten me how to read load distribution between GE links. is there a way to express this in percentage? thanks in advance!

6500#show etherchannel port-channel         
                Channel-group listing:
                -----------------------

Group: 2
----------
                Port-channels in the group:
                ----------------------

Port-channel: Po2
------------

Age of the Port-channel   = 1025d:04h:08m:47s
Logical slot/port   = 14/1          Number of ports = 1
GC                  = 0x00000000      HotStandBy port = null
Port state          = Port-channel Ag-Inuse
Protocol            =    -

Ports in the Port-channel:

Index   Load   Port     EC state        No of bits
------+------+------+------------------+-----------
  0     FF     Gi3/1    On    8

Time since last port bundled:    647d:21h:46m:49s    Gi4/16
Time since last port Un-bundled: 641d:06h:08m:39s    Gi4/16

Group: 3
----------
                Port-channels in the group:
                ----------------------

Port-channel: Po3
------------

Age of the Port-channel   = 1025d:04h:08m:47s
Logical slot/port   = 14/2          Number of ports = 2
GC                  = 0x00000000      HotStandBy port = null
Port state          = Port-channel Ag-Inuse
Protocol            =    -

Ports in the Port-channel:

Index   Load   Port     EC state        No of bits
------+------+------+------------------+-----------
  0     55     Gi3/16   On    4
  1     AA     Gi4/1    On    4

Time since last port bundled:    208d:00h:01m:40s    Gi4/1
Time since last port Un-bundled: 208d:00h:17m:15s    Gi4/1

Group: 4
----------
                Port-channels in the group:
                ----------------------

Port-channel: Po4
------------

Age of the Port-channel   = 1025d:04h:08m:48s
Logical slot/port   = 14/3          Number of ports = 2
GC                  = 0x00000000      HotStandBy port = null
Port state          = Port-channel Ag-Inuse
Protocol            =    -

Ports in the Port-channel:

Index   Load   Port     EC state        No of bits
------+------+------+------------------+-----------
  1     55     Gi3/4    On    4
  0     AA     Gi3/5    On    4

Time since last port bundled:    184d:12h:17m:09s    Gi3/5
Time since last port Un-bundled: 184d:12h:23m:04s    Gi3/5

[Peter Paluch · Accepted solution]

Hello John,

As naive as it may seem, I would simply have a look at the input/output counters in the show interfaces command output (see the counters for the appropriate physical interfaces that are bundled in an EtherChannel). I am not sure if there is any command that would directly show you the percentage of traffic distribution over an EtherChannel bundle but I guess the counters in show interfaces will provide you with the basic data to compute the ratios yourself.

Best regards,

Peter

[johnlloyd_13]

hi peter,

makes sense to me. guess i would need to check manually. thanks for your help!