Removing a multi-vrf instance – Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide User Manual
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When configuring a VRF, a warning message is generated specifying that any configuration existing
on the interface is deleted.
When assigning a VRF instance to a static or dynamic Trunk, the following constraints exists:
• If the trunk is deployed, the primary port can be assigned to a non-default VRF.
• The dynamic trunk must be configured before assigning any of its ports to a non-default VRF
routing instance, and all members of the trunk must be in the default VRF.
• Once a dynamic trunk is deployed, all ports are in lacp_block state, until the trunk state converges
to lacp_forward.
• When dynamic trunk is un-deployed, the primary port will stay in the VRF that it was assigned, but
all secondary ports will move back to the default VRF.
• On the SX platform, VRF can be assigned to physical port. However, Brocade recommends
configuring route-only on these ports to avoid switching inter-VRF traffic if untagged ports in the
same vlan are configured with different VRFs.
The following is the use case when route-only is required:
Ports 1/1 and 1/2 have same ip address and are assigned to two different VRFs without route-only
configured on these ports. Then the clients which are connected to each port e.g. 1.1.1.2/24 on 1/1,
1.1.1.3/24 on 1/2 will be able to communicate with each other because of L2 switching. The
communication between these two ports should have been isolated from each other by configuring
route-only on these ports.
The following is the use case when route-only may not be required:
If you create a separate vlan, and add untagged ports in this new vlan and assign the same VRF on all
of these physical ports, then route-only will not be needed as all the ports in this vlan will belong to the
same VRF.
Removing a Multi-VRF instance
To remove a Multi-VRF instance, you can:
• Remove a VRF configuration from a specific port:
To delete a VRF instance, using the no form of the command deletes the VRF instance and removes
all L3 interface bindings of the VRF, and returns the interface back to default VRF mode. At this time,
all IP addresses and protocol configuration on this L3 interface will be removed.
Example:
Brocade(configif-e1000-7/1)# no vrf forwarding1
All existing IPand IPv6 address will be removed from port 7/1
The port will be returned to default VRF
• Delete an address family from a VRF:
When you delete an IPv4 or IPv6 address family from a VRF instance, all the configuration related to
that address family on all ports of the VRF will be removed. Routes allocated by this address family
will be returned to the global pool.
Example:
Brocade(config-vrf-customer1)# no address-family ipv4
Brocade(config-vrf-customer1)#
• Delete entire VRF:
When you delete a VRF instance, all IPv4 and IPv6 addresses from all interfaces will be removed.
Removing a Multi-VRF instance
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FastIron Ethernet Switch Layer 3 Routing Configuration Guide
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