HP 7500 series Configuration Manual page 33

Step
Enter VLAN interface view.
7.
8. Enable BFD MAD.
9. Configure a MAD IP address
for a member on the VLAN
interface.
Excluding a port from the shutdown action upon detection of multi-active collision
By default, all ports except the console and physical IRF ports automatically shut down when the IRF
fabric transits to the Recovery state.
You can exclude a port from the shutdown action for management or other special purposes. For
example:
Exclude a port from the shutdown action, so you can Telnet to the port for managing the switch.
•
Exclude a VLAN interface and its Layer 2 ports from the shutdown action, so you can log in through
•
the VLAN interface.
CAUTION:
Excluding a VLAN interface and its Layer 2 ports from the shutdown action introduces IP collision risks
because the VLAN interface might be active on both the IRF fabric in Active state and the IRF fabric in
Recovery state.
To configure a port to not shut down when the IRF fabric transits to the recovery state:
Step
1. Enter system view.
2. Configure a port to not shut
down when the IRF fabric
transits to the Recovery state.
Recovering an IRF fabric
After the failed IRF link between two split IRF fabrics is recovered, log in to the Recovery-state IRF fabric,
and use the reboot command to reboot all its members. After these member switches join the Active-state
IRF fabric as subordinates, IRF merge is complete, as shown in
Command
interface vlan-interface
interface-number
mad bfd enable
mad ip address ip-address { mask |
mask-length } member member-id
Command
system-view
mad exclude interface interface-type
interface-number
29
Remarks
N/A
By default, BFD MAD is
disabled.
By default, no MAD IP address is
configured on any VLAN
interface.
The MAD IP address must not on
the same subnet as any IP
address configured on any
member device.
Remarks
N/A
By default, when an IRF fabric
transits to the Recovery state, all
its network ports except the IRF
physical ports and console port
are shut down.
Figure 12.