Campus Fabric Scalability

A Campus Fabric domain can contain from 1 to 4 CB units. Each of the CB units can support a PE chain or ring of up to 6 units. The maximum number of PE units in a Campus Fabric domain is 36. Assuming 48-port ICX 7450, ICX 7250, or ICX 7150 devices are used as PE units, 1,728 ports are supported.

Campus Fabric domain maximum configuration can be summarized as follows:

• 4 CB units (ICX 7650, ICX 7750, or ICX 7850 stack)
• 32 ports per CB (32 X 4 for full CB stack)
• Maximum of 8 PE chains
• Maximum 16 stand-alone PEs (in addition to 8 PE chains)
• 36 PE units per domain
• 6 PE units per chain or ring
• 1 MB maximum configuration file size

The following figure illustrates a maximized Campus Fabric domain.

This is a fully scaled Campus Fabric setup with 4 CBs. All SPX connections shown are either 4 X 10-Gbps or 1-Gbps connections. The topology includes 8 SPX PE rings, which is the maximum validated scale. The PE rings are depicted with green dashed lines to contrast them with regular uplinks. In addition to PE rings, the topology contains 12 standalone PE units. The standalone PE units have redundant uplinks to all 4 CBs. This setup also contains two SPX PE rings with the maximum cascade depth of 6 PE units.