The copper breakout cables are terminated with optical connectors and are available in 1m, 3m, 5m, or greater lengths. No additional connectors or cabling are required when using the copper breakout. When using the fiber breakout cables, additional 10Gb optics are required.
The SLX 9740 groups ports together for breakout configuration. The port groups are called Port Macros (PM). Each PM consists of four contiguous ports. There are 9 PMs in the SLX 9740-40C and 18 PMs in the SLX 9740-80C. PM numbering begins with 0. PM0 has ports 0/1-0/4, PM1 has ports 0/5-0/8, PM2 has ports 0/9-0/12, and so on.
Only the odd ports can be split to 4x10Gb or 4x25Gb using the breakout cables: 0/1, 0/3, 0/9, 0/11, 0/13, 0/15, 0/17, 0/19, 0/21, 0/23, 0/25, 0/27, 0/29, 0/31, 0/33, 0/35, 0/37, 0/39, 0/41, 0/43, 0/49, 0/51, 0/53, 0/55, 0/57, 0/59, 0/61, 0/63, 0/65, 0/67, 0/69, 0/71, 0/73, 0/75, 0/77, and 0/79. Breaking out these ports using the breakout cables results in 72 interfaces for the SLX 9740-40C and 144 interfaces for the SLX 9740-80C.
Ports 5-8 and 45-48 cannot be broken up and are supported only in 100Gb. For any PM, 40Gb and 10Gb ports cannot coexist with 25Gb ports. The following configurations are not supported:
| PM Configuration | Examples |
|---|---|
| If any port is configured as a 40Gb port or a 4x10Gb breakout port, a 4x25Gb breakout port cannot be configured unless the 40Gb ports are removed as part of the breakout operation. |
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| If a 4x25Gb breakout port is configured, no 40Gb or 4x10Gb ports can be configured. |
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