Etherchannel loadbalancing 4500 to qnap TS-1273

[celiogsoares]

Hello,

I have a qnap TS-1273 connected to a switch Cisco 4510 with 4 interface 1Gb in etherchannel lacp 802.3ad. I using port 1/27,1/28 and 2/27, 2/28 of the 4510 to connect to qnap. The problem that i have is, when i copy information to the QNAP, the speed copy dont pass the 100MB, so the etherchannel just use one interface and dont use the other 3.

What is the problem that i have so i can get the 4 interface used at same time.

the configuration i have in the ports are:

interface GigabitEthernet1/27
switchport access vlan 100
switchport mode access
speed 1000
duplex full
no cdp enable
channel-protocol lacp
channel-group 15 mode active
spanning-tree portfast edge
end

[balaji.bandi]

how is your  port-channel load-balance configured ?

good document to understand :

https://packetpushers.net/understand-etherchannel-load-balancing-catalyst-switches/

[celiogsoares]

hello,

My port-channel load-balance is configured like this:

lecSWedAp0s01#sh etherchannel load-balance
EtherChannel Load-Balancing Configuration:
        src-dst-ip

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

Best regards

[Jon Marshall]

It's important to understand that per flow etherchannel will only use one of the links. 

So if your load balancing algorithm is src and dst IP if you are copying from a server to the QNAP it can only use one of the links. 

If you had copies from different servers then each copy could in theory (although not necessarily) use different links in the etherchannel. 

Jon

[celiogsoares]

hello, 

is there any configuration to use more then one link to have more then 1Gb speed in the copy, to have almost 4Gb speed?

Best regards

[Jon Marshall]

Not for an individual flow. 

A flow can be defined based on src and dst mac address, IP address and/or port numbers depending on the switch so you have to try and pick the load balancing algorithm that will give you the best balance of flows across the links. 

But for an individual flow (however that is identified) it can only use 1 link. 

Jon