请问两台MSR3640、两台F1070和两台7503E-M做IRF用BFD检测请问怎么做配置

# 

 irf domain 10 

 irf mac-address persistent timer 

 irf auto-update enable 

 undo irf link-delay 

 irf member 1 priority 32 

 irf member 2 priority 1 

#

vlan 4000

#

# 

irf-port 1/1 

 port group interface Ten-GigabitEthernet1/0/27  

 port group interface Ten-GigabitEthernet1/0/28 

# 

irf-port 2/2 

 port group interface Ten-GigabitEthernet2/0/27 

port group interface Ten-GigabitEthernet2/0/28 

#

interface Bridge-Aggregation1024 

 description To_BFD 

 port access vlan 1000 

 undo stp enable 

# 

interface NULL0 

# 

 interface Vlan-interface1000 

 description To BFD 

 mad bfd enable 

 mad ip address 100.100.100.21 255.255.255.252 member 1 

mad ip address 100.100.100.22 255.255.255.252 member 2 

# 

interface GigabitEthernet1/0/23 

 port access vlan 1000 

 combo enable copper 

 undo stp enable 

port link-aggregation group 1024 

# 

interface GigabitEthernet1/0/24 

 port access vlan 1000 

 combo enable copper 

 undo stp enable 

 port link-aggregation group 1024 

#

interface GigabitEthernet2/0/23 

 port access vlan 1000 

 combo enable copper 

 undo stp enable 

port link-aggregation group 1024 

# 

interface GigabitEthernet2/0/24 

 port access vlan 1000 

 combo enable copper 

 undo stp enable 

 port link-aggregation group 1024 

#