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| Warning | ||
|---|---|---|
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Load balancing in LAG cannot always be equable, and this will cause some issues. |
Load Balancing Algorithm
1) A switch estimates a hash from some header fields of the packet, depending on the method of balancing.
Balancing methods:
- Source MAC or Destination MAC or both of them;
- Source IP or Destination IP or both of them;
- Source UDP/TCP port or Destination UDP/TCP port or both of them;
Other criteria determined by the vendor. For example, MPLS overhead, VLAN ID etc.
| Note | ||
|---|---|---|
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InfiNet Wireless devices device supports a hash function, which is a combination of source and destination MAC addresses, VLAN ID, source and destination IP addresses, UDP and TCP ports. |
2) If a load balancing uses source and destination fields at the same time (these can be MAC, IP, and TCP/UDP port), then XOR is calculated from their hashes.
3) The hash or XOR result is calculated depending on the number of physical ports.
4) The hash result specifies the port
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to which the packet should be sent. It may be that several hashes correspond to one LAN port, and different ports correspond to different number of hashes. For example, for a maximum of 8 ports and 5 ports in LAG, the distribution of hashes between ports will be: 2:2:2:1:1.
5) The packet is sent to the corresponding hash port.
Radio Link Aggregation
InfiNet Wireless devices allow to aggregate several radio links to increase summary throughput. Moreover, you can build Full Duplex link through TDMA.
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