HPE FlexFabric 7900 series Command Reference Manual page 23

Views
Management Ethernet interface view, VLAN interface view
Predefined user roles
network-admin
mdc-admin
Usage guidelines
This command is available in management Ethernet interface view in Release 2137 and later
versions.
BFD MAD uses the BFD protocol to detect multi-active collisions. This MAD mechanism can work
with or without intermediate devices.
You cannot use BFD MAD with LACP MAD.
If one IRF fabric uses another IRF fabric as the intermediate device for BFD MAD, you must assign
the two IRF fabrics different domain IDs for correct split detection. False detection causes IRF split.
When you configure BFD MAD that uses common Ethernet ports, follow these restrictions and
guidelines:
Category
BFD MAD VLAN
BFD MAD VLAN and
feature compatibility
MAD IP address
When you configure BFD MAD that uses management Ethernet ports, follow these restrictions and
guidelines:
Category
Ports on the intermediate
device 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 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.
•
Do not use the BFD MAD VLAN for any purpose other than configuring
BFD MAD. Layer 2 or Layer 3 features, including ARP and LACP,
cannot work on the BFD MAD-enabled VLAN interface or any port in the
VLAN. If you configure any other feature on the VLAN, neither the
configured feature nor the BFD MAD feature will work correctly.
•
Disable the spanning tree feature on any Layer 2 Ethernet ports in the
BFD MAD VLAN. The MAD feature is mutually exclusive with the
spanning tree feature.
•
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 with 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.
•
The MAD IP addresses must not be the same as any IP addresses
assigned to interfaces or VRRP groups in the IRF fabric.
Restrictions and guidelines
Use common Ethernet ports on the intermediate device to connect the
management Ethernet ports on the IRF fabric.
•
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.
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