User guide

Configuring Automatic Fabric Automatic Fabric Overview
OmniSwitch AOS Release 7 Switch Management Guide March 2015 page 14-13
• MVRP configuration learned through the Automatic Fabric process is not written to the switch
configuration file. This means that dynamically learned MVRP VLANs are not saved to the switch
configuration file. To retain these VLANs so that they are not lost when the switch reboots, manually
convert them to static VLANs.
• All VLANs are eligible for MVRP registration, except for SPB BVLANs. There is no reason to share
BVLANs through MVRP as the BVLAN topology is already created through Automatic Fabric
discovery or manual configuration.
• There are no default MVRP VLANs.
• If no VLAN registrations are found when MVRP is enabled, then the port property is removed and set
to its default state.
• MVRP is not tied to a discovery window time period. The MVRP operation is continuous until the
administrator makes changes.
IP Protocol Discovery
The Automatic Fabric discovery and configuration functionality is also extended to IP protocols.
However, the discovery and configuration process is not based on physical switch ports. Instead, existing
IP interfaces listen for protocol messages to discover if any neighbors are running OSPFv2, OSPFv3, IS-
IS IPv4, or IS-IS IPv6. When a response from a neighboring switch is received for any of these protocols,
the automatic configuration of the protocol is triggered on the local switch.
Although automatic IP configuration is triggered when Automatic Fabric starts, the IP discovery and
configuration process runs in parallel with the LACP, SPB, and MVRP discovery processes. However, if
an IP interface comes up as a result of one of these other discovery processes, automatic IP configuration
is triggered on that interface.
Automatic IP runs only when an active IP interface exists on the switch, the interface is not already
configured for the routing protocol, and discovery for Automatic Fabric IP protocols is enabled. Once an
IP interface is created, the interface will listen for hello packets from the neighboring devices and
automatically configure the basic routing parameters based on the information received in the hello
packets.
The IP protocol configuration discovered and configured through this process is saved as part of the
Automatic Fabric configuration. For more information, see
“Saving the Configuration Discovered by
Automatic Fabric” on page 14-15.
The following diagram illustrates the Automatic Fabric (AF) discovery and configuration process for the
OSPF and IS-IS routing protocols: