HPE FlexFabric 12900E Command Reference Manual page 26

Usage guidelines
Do not configure BFD MAD together with ARP MAD. BFD MAD is mutually exclusive with the
spanning tree feature, but ARP MAD requires the spanning tree feature. At the same time, BFD MAD
handles collisions differently than ARP MAD.
When you configure BFD MAD that uses common Ethernet ports, follow these guidelines:
Category
BFD MAD VLAN
BFD MAD
feature compatibility
MAD IP address
When you configure BFD MAD that uses management Ethernet ports, follow these restrictions and
guidelines:
Category
Management
ports for BFD MAD
BFD MAD VLAN
Restrictions and guidelines
•
Do not enable BFD MAD on VLAN-interface 1.
•
If you are using an intermediate device, perform the following tasks on
both the IRF fabric and the intermediate device:
Create a VLAN and VLAN interface for BFD MAD.
Assign the ports of BFD MAD links to the BFD MAD VLAN.
•
Make sure the IRF fabrics on the network use different BFD MAD VLANs.
•
Make sure the BFD MAD VLAN contains only ports on the BFD MAD
links. Exclude a port from the BFD MAD VLAN if the port is not on the
BFD MAD link. For example, if you have assigned the port to all VLANs
by using the port trunk permit vlan all command, use the undo port
trunk permit command to exclude the port from the BFD MAD VLAN.
Do not use the BFD MAD VLAN and its member ports for any purposes other
than configuring BFD MAD.
•
Configure only the mad bfd enable and mad ip address commands on
the BFD MAD-enabled VLAN interface. If you configure other features,
both BFD MAD and other features on the interface might run incorrectly.
•
Disable the spanning tree feature on any Layer 2 Ethernet ports in the
VLAN and
BFD MAD VLAN. The MAD feature is mutually exclusive with the
spanning tree feature.
•
To guarantee performance of the BFD MAD VLAN, make sure the
following subinterfaces do not use a subinterface number the same as
the VLAN interface number:
Layer 3 Ethernet subinterfaces.
Layer 3 aggregate subinterfaces.
•
To avoid problems, only use the mad ip address command to configure
IP addresses on the BFD MAD-enabled VLAN interface. Do not
configure an IP address by using the ip address command or configure
a VRRP virtual address on the BFD MAD-enabled VLAN interface.
•
Make sure all the MAD IP addresses are on the same subnet.
•
MAD IP addresses must be unique among all IP addresses on the IRF
fabric.
Restrictions and guidelines
•
Connect a management Ethernet port on each member device to the
common Ethernet ports on the intermediate device. To avoid BFD MAD
failure caused by an active/standby MPU switchover, connect a
Ethernet
management Ethernet port on each MPU to the intermediate device.
•
Make sure the management Ethernet ports for BFD MAD have the same
interface number.
•
On the intermediate device, create a VLAN for BFD MAD, and assign the
ports used for BFD MAD to the VLAN. On the IRF fabric, you do not need
to assign the management Ethernet ports to the VLAN.
•
Make sure the IRF fabrics on the network use different BFD MAD VLANs.
•
Make sure the BFD MAD VLAN on the intermediate device contains only
ports on the BFD MAD links.
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