Network Slicing Using Channelized Sub-Interfaces and FlexE
Both channelized sub-interfaces and FlexE (Flexible Ethernet) are used for network slicing, but they have different application scenarios:
# A. Channelized sub-interface is recommended for interfaces with bandwidth < 50 Gbit/s.
* Channelized sub-interfaces split a physical interface into multiple logical sub-interfaces.
* Best for lower-bandwidth links (<50 Gbit/s).
# B. FlexE is recommended for 50GE and higher-rate interfaces.
* FlexE divides a high-bandwidth physical link (e.g., 100GE, 400GE) into multiple virtual slices.
* Used in high-speed backbone and data center networks.
# C. Only FlexE-based network slicing can be deployed across OTN devices.
* FlexE is compatible with Optical Transport Network (OTN) and can be used for long-haul slicing across OTN.
# D. Only channelized sub-interface-based network slicing can be deployed across MSTP devices.
* Incorrect! While MSTP supports channelized interfaces, FlexE is not restricted to MSTP deployment
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Reference from Huawei HCIE-Datacom Documentation:
* Huawei FlexE Technology Whitepaper - Network Slicing in Transport Networks
* HCIE-Datacom Training Material - Channelized Sub-Interface and FlexE in Network Slicing