Dell MX5108n OS10 Enterprise Edition User Guide for PowerEdge MX IO Modules Re - Page 76

Changing operating modes, Restrictions, Port groups on I/O modules, Double-density QSFP28 interfaces

Page 76 highlights

Full Switch mode All switch interfaces are assigned to VLAN 1 by default, and are in the same L2 bridge domain. All configuration changes are saved in the running configuration by default. To display the current configuration, use the show runningconfiguration command. SmartFabric mode snmp-server spanning-tree username The OpenManage Enterprise - Modular console manages the dataplane configuration. Although front-panel port interfaces operate in L2 mode by default, L2 bridging is disabled. Verify configuration changes using feature-specific show commands, such as show interface and show vlan, instead of show runningconfiguration. Changing operating modes To switch an MX9116n Fabric Switching Engine or MX5108n Ethernet Switch between Full Switch and SmartFabric modes, use the OpenManage Enterprise - Modular graphical user interface. Full Switch to SmartFabric mode All Full Switch CLI configuration changes are deleted except for the subset of supported configuration commands that you can also enter and save in SmartFabric mode (see Operating modes). SmartFabric to Full Switch mode When you change to Full Switch mode, only the configuration changes you make using the subset of configuration commands supported in both modes and save are retained. In addition, the changes you make to port interfaces are deleted, except for admin state (shutdown/no shutdown), MTU, speed, and auto-negotiation mode. Restrictions • VLANs 4001 to 4020 are reserved for internal switch communication and cannot be assigned to an interface. • In SmartFabric mode, although you can use the CLI to create VLANs 1 to 4000 and 4021 to 4094, you cannot assign interfaces to them. For this reason, do not use the CLI to create VLANs in SmartFabric mode. • On an MX7116n Fabric Expander, the two QSFP28-DD uplink interfaces operate only in Ethernet mode. Use the leftmost QSFP28-DD port 1 on the Fabric Expander to connect to servers with dual-port network interface cards (NICs). Do not use the rightmost QSFP28DD port 2; it is reserved for future use to connect to servers with quad-port NICs. Port groups on I/O modules A port group is a logical port that consists of either a single or multiple hardware ports, and provides a single cable interface. On PowerEdge MX IO modules, only the MX9116n Fabric Switching Engine supports port groups: • Unified port groups • Double-density QSFP interfaces • Single-density QSFP interfaces The MX7116n Fabric Expander Module and MX5108n Ethernet Switch do not support port groups. Double-density QSFP28 interfaces On the MX9116n Fabric Switching Engine module, configure a double-density QSFP28 (QSFP28-DD) port in PORT-GROUP mode. A QSFP28-DD port group consists of two Ethernet 100G ports. The ports do not function as a single 200GE port. Use a QSFP28-DD port to: 76 PowerEdge MX Ethernet I/O modules

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Full Switch mode
SmartFabric mode
snmp-server
spanning-tree
username
The OpenManage Enterprise - Modular console manages the dataplane
configuration.
All switch interfaces are assigned to VLAN 1 by default,
and are in the same L2 bridge domain.
Although front-panel port interfaces operate in L2 mode by default, L2 bridging
is disabled.
All
configuration
changes are saved in the running
configuration
by default. To display the current
configuration,
use the
show running-
configuration
command.
Verify
configuration
changes using
feature-specific
show
commands, such as
show interface
and
show vlan
, instead of
show running-
configuration
.
Changing operating modes
To switch an MX9116n Fabric Switching Engine or MX5108n Ethernet Switch between Full Switch and SmartFabric modes, use the
OpenManage Enterprise - Modular graphical user interface.
Full Switch to SmartFabric mode
All Full Switch CLI
configuration
changes are deleted except for the subset of supported
configuration
commands that you can also enter
and save in SmartFabric mode (see
Operating modes
).
SmartFabric to Full Switch mode
When you change to Full Switch mode, only the
configuration
changes you make using the subset of
configuration
commands supported in
both modes and save are retained. In addition, the changes you make to port interfaces are deleted, except for admin state
(
shutdown
/
no shutdown
), MTU, speed, and auto-negotiation mode.
Restrictions
VLANs 4001 to 4020 are reserved for internal switch communication and cannot be assigned to an interface.
In SmartFabric mode, although you can use the CLI to create VLANs 1 to 4000 and 4021 to 4094, you cannot assign interfaces to
them. For this reason, do not use the CLI to create VLANs in SmartFabric mode.
On an MX7116n Fabric Expander, the two QSFP28-DD uplink interfaces operate only in Ethernet mode. Use the leftmost QSFP28-DD
port 1 on the Fabric Expander to connect to servers with dual-port network interface cards (NICs). Do not use the rightmost QSFP28-
DD port 2; it is reserved for future use to connect to servers with quad-port NICs.
Port groups on I/O modules
A port group is a logical port that consists of either a single or multiple hardware ports, and provides a single cable interface. On PowerEdge
MX IO modules, only the MX9116n Fabric Switching Engine supports port groups:
Unified
port groups
Double-density QSFP interfaces
Single-density QSFP interfaces
The MX7116n Fabric Expander Module and MX5108n Ethernet Switch do not support port groups.
Double-density QSFP28 interfaces
On the MX9116n Fabric Switching Engine module,
configure
a double-density QSFP28 (QSFP28-DD) port in PORT-GROUP mode. A
QSFP28-DD port group consists of two Ethernet 100G ports. The ports do not function as a single 200GE port. Use a QSFP28-DD port to:
76
PowerEdge MX Ethernet I/O modules