R3303-HP HSR6800 Routers IRF Command Reference

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Restrictions and
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uidelines
BFD MAD VLAN and feature
compatibility
• 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 function can work correctly.
• Disable the spanning tree feature on any port in the BFD MAD VLAN. The
MAD function is mutually exclusive with the spanning tree feature.
• Do not bind a BFD MAD-enabled VLAN interface to any VPN instance. The
MAD function is mutually exclusive with VPN.
IP address requirements
• Do not enable BFD MAD on a VLAN interface that has been assigned an IP
address. The VLAN interface becomes unreachable even if you disable BFD
MAD. To recover the connectivity of the VLAN interface, use the shutdown
and undo shutdown commands or reset ARP.
• To avoid problems, only use the mad ip address command to configure IP
addresses on the BFD MAD-enabled VLAN interface. For example, an IP
address configured with the ip address command or a VRRP virtual IP
address can cause problems.
• All MAD IP addresses on the BFD MAD-enabled VLAN interface must be on
the same subnet.
Examples
# Enable BFD MAD on VLAN-interface 3.
<Sysname> system-view
[Sysname] interface vlan-interface 3
[Sysname-Vlan-interface3] mad bfd enable
mad enable
Use mad enable to enable LACP MAD.
Use undo mad enable to disable LACP MAD.
Syntax
mad enable
undo mad enable
Default
LACP MAD is disabled.
Views
Aggregate interface view
Default command level
3: Manage level
Usage guidelines
LACP MAD uses extended LACP packets for detecting multi-active collisions and requires an intermediate
HP device that also supports LACP MAD packets.