Sample Stack-Link Configurations
This section illustrates some sample configurations for the data-carrying stack-links in a cluster, including a star configuration and a daisy-chain using a GigaStream. You can see a combination of star and daisy-chain in About Cluster.
Important: Ensure that you do not cable the stack-links in a loop. Use a star or daisy-chain configuration, as follows:
Star Configuration
Use a GigaVUE‑OS node as the hub in a star configuration. This makes it easy to create a star configuration that maximizes traffic distribution efficiency. With a star configuration, no destination is further than two hops away. Note that the following image only shows the stack-link connections and not the cluster control connections from the control cards.
| 1 | Star Configuration |
Daisy-Chain Configuration Using GigaStream for Stack-Link
You can connect two GigaVUE‑OS nodes together in a daisy-chain, for example, using any 10Gb line card port. Since ,there can be up to 96 10Gb ports on a single GigaVUE‑HC3 node, the stack-link needs enough bandwidth to handle expected cross-node traffic volume. Create a stack GigaStream out of up to 24x10Gb (PRT-HC3-X24) or 8x100Gb (PRT-HC3-C08Q16) or 16x40Gb (PRT-HC3-C08Q16) ports to handle expected cross-node traffic loads.
| 2 | Daisy-Chain Configuration using GigaStream for Stack-link |
