See the 7210 SAS-D, Dxp, K 2F1C2T, K 2F6C4T, K 3SFP+ 8C Router Configuration Guide for more information about ECMP support for 7210 SAS platforms.
When a requirement exists to increase the available bandwidth for a logical link that exceeds the physical bandwidth or add redundancy for a physical link, typically one of the following methods is applied:
equal cost multi-path (ECMP)
Link Aggregation (LAG)
A 7210 SAS can deploy both methods at the same time, meaning it can use ECMP of two or more Link Aggregation Groups (LAG) or single links.The Nokia implementation supports per flow hashing used to achieve uniform loadspreading and per service hashing designed to provide consistent per service forwarding. Depending on the type of traffic that needs to be distributed into an ECMP or a LAG, different variables are used as input to the hashing algorithm.
The following tables list the packets used for hashing on 7210 SAS platforms.