Layer 2 Ether Channel Load Balancing

[akbntc001]

Hello,

I have a layer 2 ether-channel configured between my 2 offices on Catalyst 3560 switches. I am having issue with the load balancing.

It's running on the default load-balance algorithm:

#show etherchannel load-balance
EtherChannel Load-Balancing Configuration:
src-mac

EtherChannel Load-Balancing Addresses Used Per-Protocol:
Non-IP: Source MAC address
IPv4: Source MAC address
IPv6: Source MAC address

And the ether-channel is up:

Port-channel: Po1
------------

Age of the Port-channel = 52d:01h:54m:40s
Logical slot/port = 2/1 Number of ports = 2
GC = 0x00000000 HotStandBy port = null
Port state = Port-channel Ag-Inuse
Protocol = -
Port security = Disabled

Ports in the Port-channel:

Index Load Port EC state No of bits
------+------+------+------------------+-----------
0 00 Gi0/25 On 0
0 00 Gi0/27 On 0

Time since last port bundled: 0d:00h:14m:10s Gi0/25
Time since last port Un-bundled: 0d:00h:20m:17s Gi0/25

Problem:

Gi 0/25 is taking the outbound traffic only and Gi 0/27 is taking all the inbound traffic.

If anyone has encountered this problem kindly suggest me the fix for this. Your help will be highly appreciated!

Regards,

Arjun

[ADP_89]

Hello,

How many VLANs are running on that PO? And how many mac addresses do you have?

show run int Po1
show mac-address interface Po1

ADP

[akbntc001]

@ADP_89

Thanks for your response. Currently there are 8 VLANs and 8 dynamic MAC addresses. 

Best,

AKBNTC

[Alex Pfeil]

Change the load-balance method to src-dst-ip and verify the load afterward.
Please rate helpful posts.

[akbntc001]

@Alex Pfeil

Do I need to do it on both ends of the ether-channel? I believe it's a global configuration and will affect all the ether-channels running on that switch. The switch on one side (at main office) is connected to a few other branch offices.

Regards,

AKBNTC