Configure System Mode
You can configure different system modes to achieve varying levels of port density on the QFX5100-24Q, QFX5100-96S, and QFX5110-32Q switches. Depending on the system mode you configure, there are restrictions on which ports you can channelize. If you channelize ports that are restricted, the configuration is ignored. By default, all QSFP+ interfaces are auto-channelized. Auto-channelization is not supported on interfaces contained in expansion modules or on Virtual Chassis ports.
QFX5200 switches do not support System Mode.
When you request the system mode change, we recommend that you reboot the switch for the system mode to take effect.
The Packet Forwarding Engine on the switch is restarted when you issue system mode changes. As a result, you might experience packet loss on the switch.
Default-mode |
Mode-104port |
Flexi-pic-mode |
Non-oversubscribed-mode |
|
---|---|---|---|---|
QFX5100-48S |
Not supported |
Not supported |
Not supported |
Not supported |
QFX5100-24Q |
Supported You do not need to configure the switch to be in this mode. On PIC 0, you can channelize all 24 40-Gbps QSFP+ ports. On PIC 1 and PIC 2, the 40-Gbps QSFP+ ports in the expansion modules are supported but cannot be channelized. In this mode, you can have one of two port combinations: 32 40-Gbps QSFP+ ports, or 96 10-Gigabit Ethernet ports plus 8 40-Gbps QSFP+ ports. |
Supported On PIC 0, all 24 40-Gbps QSFP+ ports are channelized by default, which provides 96 10-Gigabit Ethernet ports. 40-Gbps QSFP+ ports contained in an expansion module on PIC 1 are supported. On PIC 1, ports 0 and 2 are channelized by default, and ports 1 and 3 are disabled. If 40-Gbps QSFP+ ports contained in an expansion module are detected on PIC 2, they are ignored. |
Supported On PIC 0, the first four ports (ports 0 through 3) cannot be channelized. 40-Gbps QSFP+ ports contained in expansion modules on PIC 1 and PIC 2 are supported but cannot be channelized. |
Supported All 24 40-Gbps QSFP+ ports on PIC 0 can be channelized to 96 10-Gigabit Ethernet ports. 40-Gbps QSFP+ ports contained in the expansion modules on PIC 1 and PIC 2 are not supported and cannot be channelized. There is no packet loss for packets of any size in this mode. |
QFX5100-96S |
Supported You do not need to configure the switch to be in this mode. On PIC 0, all 96 10-Gigabit Ethernet ports are supported. You can only channelize the 40-Gbps QSFP+ interfaces to 10-Gibabit Ethernet interfaces on ports 96 and 100. When you channelize the interfaces on ports 96 and 100, ports 97, 98, 99, 101, 102 and 103 are disabled. |
Not supported |
Not supported |
Supported On PIC 0, all 96 10-Gigabit Ethernet ports are supported. However, the eight 40-Gbps QSFP+ ports are not supported and cannot be channelized. There is no packet loss for packets of any size in this mode. |
Default-mode |
Mode-104port |
Flexi-pic-mode |
Non-oversubscribed-mode |
|
---|---|---|---|---|
QFX5100-24Q |
Not supported |
Not supported |
Supported On PIC 0, you cannot channelize ports 0 through 3. |
Not supported Expansion modules cannot be installed in PICs 1 and 2. |
Default-mode |
Mode-104port |
Flexi-pic-mode |
Non-oversubscribed-mode |
|
---|---|---|---|---|
QFX5100-24Q |
Only the QFX-EM-4Q module is supported. |
Only the QFX-EM-4Q module is supported. If you have installed the EX4600-8F expansion module on PIC 1, and you have installed the QFX-EM-4Q module on PIC 2, The 40-Gbps QSFP+ ports in both PIC slots are not supported. If you have installed the EX4600-8F expansion module on PIC 2, and you have installed the QFX-EM-4Q module on PIC 1, only the QFX-EM-4Q module on PIC 1 is supported. |
Supported On PIC 0, you cannot channelize ports 0 through 3. |
Not supported You cannot install the QFX-EM-4Q or EX4600-8F modules on PICs 1 and 2. |
Default-mode |
Mode-104port |
Flexi-pic-mode |
Non-oversubscribed-mode |
|
---|---|---|---|---|
QFX5110-32Q |
Supported All 32 QSFP+ ports on the switch are configured for 40-Gigabit Ethernet only. All ports are supported as access or uplink ports, but cannot be channelized. |
Not supported |
Supported
|
Supported See QFX5110-32Q Port Panel for more details. |
Changing the system mode causes the FPC to reboot. Because there can be a slight loss of data while the FPC reboots, we recommend that you only configure the changes during a maintenance window for this release.
Take care when changing the channelization mode from Flexi-pic to default. If you have existing ports that are channelized in Flexi-pic mode, remove the channelization from the interface before changing the system mode. Changing the Flexi-pic mode to the default mode with channelized ports causes the ports to go down, log a system log error, and remain down. You must manually remove the channelization configuration on the ports to bring the ports up in default mode.
The following steps describe how to change the system mode.