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Static LAG between GS116Ev2 and Synology
Hi, I have a GS116Ev2 which is attached to a Synology DS1815+ via two cat5e/6 cables. I have tried setting up static LAG between the two but have had some interesting results that I am hoping som...
Always the same, it's one of the most asked question in NAS communities:
Mic-cosmos wrote:...GS116Ev2 (LAG enabled), Synology (balance XOR enabled), Synology DSM showing 2000Mbps link, ~112MB/s=1Gb throughput, LAG doesn't work. ...
It's not that it does not work - it does not behave the way you expect, and the indication of beeing a 2000Mbps link is misleading (Syno is in good company, Intel did the same nonsense on their Windows systems bonding divers), worse, it's complete nonsense. This must be written my marketing people...
This is because these switches are plain L2 devices, these automatically record the mapping between MAC addresses and port.By default, each MAC address can only be mapped to one port at a time. In Balance-XOR (Linux bonding driver mode 2), all NICs under the created bond interface share the same single MAC address.
In reality, only Active-Backup (mode 1 - just fault tolerance), Balance-TLB and Balace-ALB (mode 5 or 6) can be used to gain a througput advantege for your use case.
Preferred is always deploying switches supporting 802.3ad (mode 4).
Always the same, it's one of the most asked question in NAS communities:
Mic-cosmos wrote:...GS116Ev2 (LAG enabled), Synology (balance XOR enabled), Synology DSM showing 2000Mbps link, ~112MB/s=1Gb throughput, LAG doesn't work. ...
It's not that it does not work - it does not behave the way you expect, and the indication of beeing a 2000Mbps link is misleading (Syno is in good company, Intel did the same nonsense on their Windows systems bonding divers), worse, it's complete nonsense. This must be written my marketing people...
This is because these switches are plain L2 devices, these automatically record the mapping between MAC addresses and port.By default, each MAC address can only be mapped to one port at a time. In Balance-XOR (Linux bonding driver mode 2), all NICs under the created bond interface share the same single MAC address.
In reality, only Active-Backup (mode 1 - just fault tolerance), Balance-TLB and Balace-ALB (mode 5 or 6) can be used to gain a througput advantege for your use case.
Preferred is always deploying switches supporting 802.3ad (mode 4).
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