Port Subdivisions

On some Extreme Networks switch models, you can configure QSFP28, QSFP56-DD, SFP56-DD, or SFP28 ports either as single ports or as multiple, channelized ports. In a channeled port, with appropriate cabling, the original physical port can accommodate multiple data lanes at lower bandwidths. Ports are not channelized by default.

Note

Only odd numbered ports can be channelized. When an odd numbered port is channelized the next even numbered port is not available for data traffic. For example, if port 1 is channelized port 2 is not available.

The following options are available:

Table 1. Port Channelization
Device	Port Bandwidth	Port Channels
(all models) QSFP28 (ports 1 - 32)	100 Gb	One of the following: One 100 Gb port (default) One 40 Gb port Four 25 Gb ports Four 10 Gb ports One 25 Gb port w/ QSA adapter One 10 Gb port w/ QSA adapter
(all models) QSFP56-DD (ports 1 - 8)	400 Gb	One of the following: One 400 Gb port (default) Four 100 Gb ports One 100 Gb ports One 40 Gb ports Four 25 Gb ports Four 10 Gb ports
7830-VIM-8DE QSFP56-DD (ports 1 - 8)	400 Gb	One of the following: One 400 Gb port (default) Four 100 Gb ports One 100 Gb ports One 40 Gb ports Four 25 Gb ports Four 10 Gb ports
7830-VIM-16CE QSFP28 (ports 1 - 16)	100 Gb	One of the following: One 100 Gb port (default) One 40 Gb port Four 25 Gb ports Four 10 Gb ports One 25 Gb port w/ QSA adapter One 10 Gb port w/ QSA adapter
7830-VIM-24CE SFP56-DD (ports 1 - 24)	100 Gb	One of the following: One 100 Gb port (default) One 25 Gb port One 10 Gb port
7830-VIM-24YE SFP28 (ports 1 - 24)	25 Gb	One of the following: One 25 Gb port (default) One 10 Gb port

In the port range 1 - 32, a group of four consecutive ports must operate at the same speed from either of the following groups:

10 Gb or 40 Gb or 4x10 Gb
25 Gb or 100 Gb or 4x25 Gb

For example, using the first speed group, ports 1 - 4 can all operate as 10 Gb or 40 Gb but not a mix of 10 Gb and 40 Gb. Because of channelization restrictions, ports 1 and 3 can only be channelized as 4x10 Gb.

For information about configuring channelized ports, see the Fabric Engine Command References for your version of the Fabric Engine operating system.