balancing link

[Felipe]

Good afternoon,In a client must perform a link balancing between two locations. The interlinking between them, atualemente, is performed through radio (Radwin), however the client requests to be balanced (50% and 50%) the traffic with an optical fiber. The port is gigabit and Fibre is 100.
What would be the best possible way?
LACP L2?
Model: X440-24t
View: 15.2.1.5

Thank you

[Felipe]

Thank you all!However, reviewing the customer's design, I found that the connection via Radwin is not direct, with a third on the way Extreme x440 (Below the drawing).
I believe that this case will not be possible to achieve this balance, remembering that this whole network is Layer 2.

[Erik_Auerswald]

Hello Felipe,

load sharing between a 1Gbps and a 100Mbps link can create performance problems if more than 100Mbps of traffic is sent to the slower link. The 1Gbps link might still have (a lot of) capacity left, but the 100Mbps link is saturated and will drop traffic. Using just the 1Gbps link (with the 100Mbps link as backup) should work much better.

If both connections allow the same speed of 100Mbps or less, you can configure the 1Gbps port to use 100Mbps and use port sharing (LAG) or routing with ECMP (route sharing).

Erik

[Henrique]

Hi Felipe,

For Link Aggregation/LACP/802.3ad both ports must belong to the same vlans + both ports must be the same type and same speed.

It seems that you want to balance the traffic between 2 different ports using 2 different vlans. Am I correct?

If so, then you should have routing configuration to accomplish this as follows:

1. Lets say you want to balance between Gateway1 and Gateway2
2. You should have 2 routes to the same destination using both Gateways (1 route pointing to gw1 and another route pointing to gw2) and both routes must have the same metric/cost
3. If #1 and #2 are true than use the command "enable iproute sharing"

Please provide us more details about your scenario so we can guide you accordingly

[Patrick_Voss]

To piggy back off what Henrique said, ip route sharing will act just like a lag in a sense it wont balance the traffic perfectly but will hash it out one or the other based on an algorithm.

[Patrick_Voss]

Hello Felipe,

The ports will not equally load balance across a LAG. You can try tweaking the algorithm to see what the output is but this is a trial and error process.