HPE FlexFabric 5940 SERIES Configuration Guide

2
Splitting a 40-GE interface and combining 10-GE breakout
interfaces
Configuration restrictions and guidelines
When you split a 40-GE interface and combine 10-GE breakout interfaces, follow these restrictions
and guidelines:
• 40-GE interfaces FortyGigE 1/0/1 through FortyGigE 1/0/4 and FortyGigE 1/0/29 through
FortyGigE 1/0/32 on an HPE FlexFabric 5940 32QSFP+ Switch (JH396A) switch do not support
one-to-four splitting.
• 100-GE interfaces on an HPE FlexFabric 5940 48SFP+ 6QSFP28 Switch (JH390A) or HPE
FlexFabric 5940 48XGT 6QSFP28 Switch (JH391A) switch do not support one-to-four splitting.
• When an LSWM124XGT2Q (JH182A), LSWM124XG2Q (JH181A), or LSWM124XG2QL
(JH180A) interface module is installed in an HPE FlexFabric 5940 4-slot Switch (JH398A)
switch , 40-GE interfaces on these modules do not support one-to-four splitting.
• When an LSWM18QC (JH183A) interface module is installed in an HPE FlexFabric 5940 4-slot
Switch (JH398A) switch, the last two 40-GE interfaces on the module do not support one-to-four
splitting.
Splitting a 40-GE interface into four 10-GE breakout interfaces
You can use a 40-GE interface as a single interface. To improve port density, reduce costs, and
improve network flexibility, you can also split a 40-GE interface into four 10-GE breakout interfaces.
For example, you can split 40-GE interface FortyGigE 1/0/1 into four 10-GE breakout interfaces
Ten-GigabitEthernet 1/0/1:1 through Ten-GigabitEthernet 1/0/1:4.
After you configure this feature on a 40-GE interface, the system deletes the 40-GE interface and
creates the four 10-GE breakout interfaces.
After the using tengige command is successfully configured, you do not need to reboot the switch.
You can view the four 10-GE breakout interfaces by using the display interface brief command.
A 40-GE interface split into four 10-GE breakout interfaces must use a dedicated 1-to-4 cable. For
more information about the cable, see the installation guides.
To split a 40-GE interface into four 10-GE breakout interfaces:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter 40-GE interface view.
interface
interface-type
interface-number
N/A
3. Split the 40-GE interface into
four 10-GE breakout
interfaces.
using tengige
By default, a 40-GE interface is not
split and operates as a single
interface.
The 10-GE breakout interfaces
support the same configuration and
attributes as common 10-GE
interfaces, except that they are
numbered differently.
Combining four 10-GE breakout interfaces into a 40-GE interface
If you need higher bandwidth on a single interface, you can combine the four 10-GE breakout
interfaces into a 40-GE interface.
After you configure this feature on a 10-GE breakout interface, the system deletes the four 10-GE
breakout interfaces and creates the 40-GE interface.

HPE FlexFabric 5940 SERIES Specifications

General

Brand	HPE
Model	FlexFabric 5940 SERIES
Category	Switch
Language	English