BFD端口问题

交换机配置BFD，查看display mad verbose ，发现 BFD MAD interfaces把设备的接口都加进来了，这个什么问题，这些接口下都是方通vlan all,BFD检测vlan 4000,其他型号交换机的配置也是vlan all,没有这种情况出现，正常只有BFD检测vlan（图一为正常的，图二为异常），目前怀疑和版本有关，异常的交换机版本较老，有大神知道原因吗

异常交换机配置：

version 7.1.070, Release 1119P20

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 sysname 2Fa-MES-2FTPMOffice_6.237-hj

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 clock timezone GMT add 08:00:00

 clock protocol ntp

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 telnet server enable

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 irf mac-address persistent timer

 irf auto-update enable

 undo irf link-delay

 irf member 1 priority 32

 irf member 2 priority 1

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 dot1x

 dot1x authentication-method eap

 dot1x timer reauth-period 900

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 mac-authentication 

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 lldp global enable

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 password-recovery enable

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vlan 1

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vlan 25

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vlan 28 to 29

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vlan 68 to 74

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vlan 76

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vlan 4000

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irf-port 1/2

 port group interface Ten-GigabitEthernet1/0/26

 port group interface Ten-GigabitEthernet1/0/27

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irf-port 2/1

 port group interface Ten-GigabitEthernet2/0/26

 port group interface Ten-GigabitEthernet2/0/27

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 stp bpdu-protection

 stp global enable

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interface Bridge-Aggregation1

 port link-type trunk

 port trunk permit vlan all

 link-aggregation mode dynamic

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interface NULL0

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interface Vlan-interface1

 ip address 192.168.6.237 255.255.255.0

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interface Vlan-interface4000

 mad bfd enable

 mad ip address 192.168.99.1 255.255.255.0 member 1

 mad ip address 192.168.99.2 255.255.255.0 member 2

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interface GigabitEthernet1/0/1

 port link-mode bridge

 port access vlan 4000

 undo stp enable

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interface GigabitEthernet2/0/1

 port link-mode bridge

 port access vlan 4000

 undo stp enable

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interface Ten-GigabitEthernet1/0/28

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan all

 port link-aggregation group 1

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interface Ten-GigabitEthernet2/0/28

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan all

 port link-aggregation group 1

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