2. Summary – what is ONIE?
Similar approach to installing OS on server
BIOS + PXE = U-Boot + ONIE (Open Network Install
Environment)
Supported hardware (HCL) preloaded with ONIE
ONIE available on GitHub
• http://onie.github.io/onie/
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bare metal server
operating
system
app app app
BIOS and PXE
bare metal switch
operating
system
app app app
U-Boot and ONIE
5. UTSA OCP Certification Laboratory and ONIE
The UTSA OCP Lab will …
Collaborate on test plans
Help develop test suites
Help HW vendors certify their ONIE implementation
Benefit OS vendors
Improve the quality of the ONIE project
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6. ONIE Ongoing development
Support Multiple CPU Architectures
PowerPC - ready today
x86 – ready today
X86 Virtual machines
Planning for ARM and MIPS
Maintain ONIE behaviors across architectures
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Just like BIOS and PXE allows you to install an OS on a server using a remote image, the combination of U-Boot and ONIE allows that for bare metal switches.We require ONIE preloaded on HCL because U-Boot is different across vendor devices, and U-Boot itself is not very user friendly.We created ONIE and gave it to the Open Compute Project (OCP); it facilitates easy network OS installation of not just Cumulus Linux (Pica8 is a competitive example). Now you have your choice of installing whatever OS you want, not just what comes with the switch (e.g. Cisco IOS– OEM example, or FASTPATH– Broadcom’s OS).Think of ONIE as PXE on steroids. ONIE is a small BusyBox Linux distribution, with a bunch of fetch and execution Bash scripts. It leverages modern ways of discovering networks using what was built into Linux—e.g., IPv6 neighbor discovery, DHCPv6, DHCPv4.U-Boot is very good at probing the bus. U-Boot takes about 1MB. It has boot flash that’s dedicated to booting the hardware, separate from the Operating System flash. ONIE is a way to build on top of this. Takes about 3.5 MB.ONIE is extremely well documented and flexible, and embraced by the open source community. (Source is on GitHubsince summer 2013).
The basic use of bridging is to connect all of the physical interfaces in the system into a single layer 2 domain. This results in a switch that behaves like a Cisco Catalyst device.VLANs are called bridging because under Linux the way you’d create a VLAN is by creating a bridge. We try to stick to Linux terms because CL is Linux.VLAN tags are implemented as VLAN sub-interfaces.The traffic from multiple bridges or VLAN segments can be multiplexed on the same data link. Cumulus Linux supports the 802.1Q VLAN trunk interface, which carries traffic from multiple VLANs, with each packet encapsulated with an 802.1Q VLAN tag. The VLAN ID carried in the VLAN tag associates the packet with the corresponding VLAN segment. Each VLAN sub-interface of the VLAN trunk can be added as a member interface of the corresponding bridge.
The basic use of bridging is to connect all of the physical interfaces in the system into a single layer 2 domain. This results in a switch that behaves like a Cisco Catalyst device.VLANs are called bridging because under Linux the way you’d create a VLAN is by creating a bridge. We try to stick to Linux terms because CL is Linux.VLAN tags are implemented as VLAN sub-interfaces.The traffic from multiple bridges or VLAN segments can be multiplexed on the same data link. Cumulus Linux supports the 802.1Q VLAN trunk interface, which carries traffic from multiple VLANs, with each packet encapsulated with an 802.1Q VLAN tag. The VLAN ID carried in the VLAN tag associates the packet with the corresponding VLAN segment. Each VLAN sub-interface of the VLAN trunk can be added as a member interface of the corresponding bridge.
