The VELOS system uses an internal chassis network for control plane and
management plane communication between firmware and software on the blades and system
controllers. Traffic on this internal network is firewall-protected and is not exposed to a
customer’s management network.
Internal VELOS chassis networking can utilize one of two IP address ranges
known as RFC6598 and RFC1918. The RFC6598 address range maps the predefined VELOS internal
network range to 100.64/12 IP addresses (the default). The RFC1918 range lets you choose one of
16 possible address ranges in the 10.0.0.0/12 address range.
IP addresses in the predefined range are reserved for the chassis network
and cannot be used for any of the following:
VELOS management IP addresses for the system controllers, chassis
partitions, and tenants
Any external service configured on the VELOS system, such as a DNS
server, NTP server, and so on
Source IP addresses of any device used to communicate with the VELOS
system (such as a laptop, workstation, or other device that connects)
If your network uses addresses in the default predefined range for any of
the above, you will not be able to access the VELOS system by means of the VELOS management
interfaces (including the CLI, webUI, or RESTCONF APIs). This is only an issue if using
100.64.0.0/12 addresses for VELOS management IP addresses, external servers, or source IP
addresses described here. To prevent this issue, F5 provides a procedure that enables you to
select a different internal IP address range during initial provisioning of a system, as an
alternative to using the default range.