Port breakout enables 100GbE ports to be broken out into 4x10GbE, 4x25GbE, and 2x50GbE ports through a secure, highly reliable breakout cabling solution. Networks require a mix of 10Gb, 25Gb, 40Gb, and 100Gb Ethernet interface speeds able to utilize the widest range of flexible connectivity options and it require a variety of cost-effective cabling options for both addressing connectivity and allowing for simple migrations as network speeds and density requirements evolve.

Port breakout feature provides flexibility in splitting 100G to 4X10G, 4X25G, 2X50G, and vice-versa. 100G splittable ports are called control ports. Ports which are members of a control port are called subsidiary ports. When you do port breakout on 100g (ce3) port into 4X10g, the original port (ce3) will be removed and four 10g ports will be added as ce3/1, ce3/2, ce3/3, and ce3/4. On this breakout port you can do the all L2 and L3 features like on a normal port.

When port breakout is un-configured, the breakout ports (ce3/1, ce3/2, ce3/3, ce3/4) will be removed and the original port (ce3) will be added back.