Breakout support
Breakout support for a port helps to split a higher density port to multiple independent and logical ports. Starting from Cisco IOS XE 17.4, breakout support is introduced in Bay 2 of C8500-12X4QC that supports breakout capable 40G native ports. The breakout support is of 4X10G and uses a 3-tuple approach.
![]() Note |
Breakout support is only supported on C8500-12X4QC (not C8500-20X6C). |
This table explains the interface names when breakout is configured:
|
Interface names |
Description |
|---|---|
|
Te0/2/0, Te0/2/1, Te0/2/2, Te0/2/3, Te0/2/4, Te0/2/5, Te0/2/6, Te0/2/7, Te0/2/8, Te0/2/9, Te0/2/10, Te0/2/11 |
All three 40 G native ports working in 10G breakout mode |
|
Fo0/2/0,Fo0/2/4, Te0/2/8, Te0/2/9, Te0/2/10, Te0/2/11 |
1st native port in 40G mode 2nd native port in 40G mode 3rd native port in 10G breakout mode |
|
Fo0/2/0, Te0/2/4, Te0/2/5, Te0/2/6, Te0/2/7 Fo0/2/8 |
1st native port in 40G mode 2nd native port 10G breakout mode 3rd native port in 40G mode |
|
Te0/2/0, Te0/2/1, Te0/2/2, Te0/2/3, Fo0/2/4, Fo0/2/8 |
1st native port in 10G breakout mode 2nd native port in 40G mode 3rd native port in 40G mode |
|
1st native port in 10G breakout mode 2nd native port in 40G mode 3rd native port in 40G mode |
1st native port in 40G mode 2nd native port in 10G breakout mode 3rd native port in 10G breakout mode |
|
Te0/2/0, Te0/2/1, Te0/2/2, Te0/2/3, Te0/2/4, Te0/2/5, Te0/2/6, Te0/2/7, Fo0/2/8 |
1st native port in 10G breakout mode 2nd native port in 10G breakout mode 3rd native port in 40G mode |
|
Te0/2/0, Te0/2/1, Te0/2/2, Te0/2/3, Fo0/2/4, Te0/2/8, Te0/2/9, Te0/2/10, Te0/2/11 |
1st native port in 10G breakout mode 2nd native port in 40G mode 3rd native port in 10G breakout mode |
Breakout support configuration
![]() Note |
Before using the breakout capability, ensure that Bay 2 is configured in 40G mode |
Router(config)#hw-module subslot 0/2 breakout 10G port ?
all configure all native ports in breakout mode
native_port_0 configure native port 0 in breakout mode
native_port_4 configure native port 4 in breakout mode
native_port_8 configure native port 8 in breakout mode
Sample commands to configure breakout support
hw-module subslot 0/2 breakout 10g port native_port_0
hw-module subslot 0/2 breakout 10g port native_port_8
hw-module subslot 0/2 breakout 10g port all
hw-module subslot 0/2 breakout none port all
hw-module subslot 0/2 breakout none port all
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