Configuring Interface Split and Merge
Context
Some 40GE optical interfaces can be used as independent interfaces or each can be split into four 10GE interfaces. With the interface split function, a device with 40GE interfaces can provide high-density 10GE interfaces, and can connect to 40GE or 10GE interfaces on the remote device. This function allows for flexible networking and lowers hardware costs.
After an interface is split, the original interface does not work. The new 10GE or 40GE optical interfaces support the same configurations and features as common optical interfaces, except that they are numbered in a different way. For details about the numbering rule, see Interface Numbering Rules.
Only the S5730S-EI, S5730-SI, S5730-HI, S5731-H, S6720-LI, S6720-SI, S6720S-SI, S6720S-LI, S6720S-EI, and S6720-EI support interface split and merge.
Connection Mode |
Description |
Configuration Reference |
|---|---|---|
1-to-4 high-speed cable (or copper cable) |
The cable provides fixed optical modules that can be directly installed on optical interfaces, lowering costs. The cable length is fixed and the maximum length is 5 m. 1-to-4 high-speed cable models: QSFP-4SFP10G-CU1M, QSFP-4SFP10G-CU3M, and QSFP-4SFP10G-CU5M |
For details, see "Cables - High-Speed Cable" in Hardware Description of a specified model. |
1-to-4 active optical cable (AOC) |
The cable provides fixed optical modules that can be directly installed on optical interfaces, lowering costs. The cable length is fixed and the maximum length is 10 m. 1-to-4 AOC model: QSFP-4SFP10-AOC10M |
For details, see "Cables - Optical Fiber" in Hardware Description of a specified model. |
1-to-4 40GE optical module + common 10GE optical module + optical fiber |
The local and remote interfaces can have a 1-to-4 40GE optical module and four common 10GE optical modules installed respectively and be connected using a dedicated 1-to-4 optical fiber. The communication distance can be adjusted. The optical fibers do not provide optical modules and the costs are high. 1-to-4 40GE optical module models: QSFP-40G-iSR4, QSFP-40G-eSR4, QSFP-40G-iSM4, QSFP-40G-eSM4, and CFP-40G-SR4 1-to-4 optical fiber model: MPO-4*DLC |
For details, see "Pluggable Modules for Interfaces" in Hardware Description of a specified model. |
Common 40GE optical module + optical fiber |
If the local and remote interfaces are both split 40GE interfaces, they can have the same 40GE QSFP+ optical modules installed and be connected using an optical fiber. |
For details, see "Pluggable Modules for Interfaces" in Hardware Description of a specified model. |
If interface split or merge is configured on an interface, the original configuration on the interface is lost. Therefore, exercise caution when deciding to perform the interface split or merge operation.
Procedure
- Configuring Interface Split
Splitting a 40GE interface into four 10GE interfaces
Run system-view
The system view is displayed.
Run interface 40ge interface-number
The 40GE interface view is displayed.
Run port split split-type 40GE:4*XGE
The 40GE interface is split into four 10GE interfaces.
By default, a 40GE interface is used as an independent interface.
After configuring interface split, save the configuration and restart the device to make the configuration take effect.
- Configuring Interface Merge
Merging four converted 10GE interfaces into a 40GE interface
Run system-view
The system view is displayed.
Run interface xgigabitethernet interface-number
The view of a converted 10GE interface is displayed.
Run undo port split
The four converted 10GE interfaces are merged into a 40GE interface.
To merge converted interfaces, you only need to run this command in the view of one converted interface.
After configuring interface merge, save the configuration and restart the device to make the configuration take effect.