防火墙域间ping不通，请大神指教

DMZ安全域加入接口interface Ethernet0/2，untrust域加入接口interface Ethernet0/1，两个接口下的计算机都是同一网段，为什么DMZ域下的计算机ping不通untrust域下的计算机？防火墙配置如下：

 sysname H3C

#

 firewall packet-filter enable

 firewall packet-filter default permit

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 firewall statistic system enable

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radius scheme system

 server-type extended

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domain system

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local-user admin

 password simple admin

 service-type telnet

 level 3

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interface Aux0

 async mode flow

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interface Ethernet0/0

 ip address 192.168.1.11 255.255.255.0

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interface Ethernet0/1

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interface Ethernet0/2

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interface Ethernet0/3

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interface GigabitEthernet1/0

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interface GigabitEthernet1/1

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interface Encrypt2/0

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interface NULL0

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firewall zone local

 set priority 100

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firewall zone trust

 add interface Ethernet0/0

 set priority 85

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firewall zone untrust

 add interface Ethernet0/1

 set priority 5

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firewall zone DMZ

 add interface Ethernet0/2

 set priority 50

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firewall interzone local trust

#

firewall interzone local untrust

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firewall interzone local DMZ

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firewall interzone trust untrust

#

firewall interzone trust DMZ

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firewall interzone DMZ untrust

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user-interface con 0

user-interface aux 0

user-interface vty 0 4

#

return