Setup Guide

Version Description
9.10(0.0) Introduced on the S6100–ON.
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.7(0.0) Added support for dynamically fanning-out of interfaces on S6000. Introduced on
the S6000–ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.1 Introduced on the S4810.
Usage
Information
You can split a 100G port into two 50G, one 40G, four 10G, or four 25G ports.
You can use the stack-unit portmode command to dynamically fan-out 100G ports into two 50G,
one 40G, four 10G, or four 25G ports and vice-versa without reloading a switch.
The port must be in a default configuration before it can be split. As the 100G port is lost in the
configuration when the port is split, ensure that you remove the port from other L2/L3 feature
configurations.
If you use a 40G LR4 or 40G LM4 optics, you can only convert a 100G port into a 1x40G port. LR4 and
LM4 optics do not support dual mode or quad mode configurations.
To convert a fanned-out port back to 100G, use the no form of the stack-unit portmode command.
Example
Example of converting a 100G port to 1x40G
DellEMC(conf)#stack-unit 1 module 1 port 1 portmode single speed 40G
Warning: Enabling Single mode on stack-unit 1 module 1 port 1. Please
verify whether the configs related to interface Hu 1/1/1 are cleaned up
before proceeding further.
[confirm yes/no]:yes
Single mode is enabled on stack-unit 1 module 1 port 1
DellEMC(conf)#Sep 18 05:16:49: %STKUNIT1-M:CP %IFMGR-5-DYNAMIC_FANOUT:
Port 1 in slot 1 has been fanned-out
switchport
Place an interface in Layer 2 mode.
Syntax
switchport [[backup interface {interface | port-channel number}] | mode
private-vlan {host | promisucous | trunk}]
To remove an interface from Layer 2 mode and place it in Layer 3 mode, enter the no switchport
command. If a switchport backup interface is configured, first remove the backup configuration. To
remove a switchport backup interface, enter the no switchport backup interface command.
Parameters
backup (OPTIONAL) Use this option to configure a redundant Layer 2 link without using
Spanning Tree. The keyword backup configures a backup port so that if the
primary port fails, the backup port changes to the up state. If the primary later
comes up, it becomes the backup.
interface
interface
(OPTIONAL) Enter any of the following keywords and the interface information:
● For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port/subport information.
● For a 25-Gigabit Ethernet interface, enter the keyword twentyFiveGigE
then the slot/port/subport information.
Interfaces 707