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titleNOTE:

PICOS 3.1.0 is currently in limited release status.

PICOS 3.1.0 is inherited from PICOS 2.11.16 and has improved to provide a more reliable and higher performance system. This document describes the differences between PICOS 3.1.0 and 2.11.16 which includes the following sections:

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In PICOS 3.1.0, Linux kernel and rootfs are updated, the following table describes the details.

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Significant Changes on PicOS startup/shutdown with systemd

In PICOS 3.1.0, systemd is used to manage/control the services, this brings the difference of the picos service management command under the Linux shell, as shown in the following table:

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NOTE:

  •   The commands are compatible back to 2.11.x.
  •   3.1.0 commands are recommended.
  •   "sudo service picos status" is not available in 3.1.0.
  •   Will not print dots and any information to indicate the status of progress when start/stop PicOS. It will keep suspending until the start/stop is finished.

Installation and Upgrade

Partitioning

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  •   Downgrade from 3.1.0 to 2.11.x is not allowed by using "upgrade" command.
  •   Use Use onie-nos-install to  to downgrade PICOS from 3.1.0 to 2.11.x. Before proceeding this, we first need to use ONIE to uninstall PICOS. On the ARM platform, execute the the onie_uninstaller command  command at the ONIE prompt to uninstall the current version PICOS. On the x86 platform, select the "ONIE: Uninstall OS" option in the GRUB menu to uninstall the current version PICOS.

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  •   eth0 is separated from In-band management interfaces completely.
  •   Configure maximum Maximum of 4 VLAN interfaces can be configured as in-band management interfaces by using set system inband vlan-interface <vlan-interface> command.
  •   Add VRF option to CLI command ping/traceroute under operational mode.

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  •   Move all VLAN interfaces, except the VLAN interface purposed for in-band management, to VRF1 manually.  Enable in-band on certain VLAN interface by using"set system in-band enable vlan-interface xxxx" command.
  •   Use set system inband enable true command to enable the inband management function for all the L3 VLAN interfaces in the default VRF. Use set system inband vlan-interface <vlan-interface> command to set a specified L3 VLAN interface in the default VRF as the inband management port. 

Management VRF – Limitation

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  •   Remove configuration files /pica/config/pica_startup.boot and /pica/config/pica.conf if change  if change from FLEX mode to QSFP or SFP mode.

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