MSR36-60 子网间通信异常，只能单方通讯？？

如下配置：

60段的电脑可以PING 通172段，172段的ping不通60段？

60段的是一个交换机，划分VLAN6。当然，60段的所有电脑和3660的G2口都在VLAN6里面。

#
 version 7.1.064, Release 0605P20
#
 sysname wanglong
#
 qos carl 1 destination-ip-address range 172.16.0.2 to 172.16.3.250 per-address
#
 dhcp enable
#
 dns proxy enable
 dns server 59.49.49.49
 dns server 219.149.135.188
#
 password-recovery enable
#
vlan 1
#
dhcp server ip-pool defaultpool
 gateway-list 172.16.0.1
 network 172.16.0.0 mask 255.255.248.0
 address range 172.16.0.2 172.16.3.250
 dns-list 59.49.49.49 219.149.135.188
 expired day 0 hour 1
#             
controller Cellular0/0
#
controller Cellular0/1
#
interface Aux0
#
interface NULL0
#
interface GigabitEthernet0/0
 port link-mode route
 combo enable copper
 ip address 172.16.0.1 255.255.248.0
 tcp mss 1460
 dhcp server apply ip-pool defaultpool
#
interface GigabitEthernet0/1
 port link-mode route
 combo enable copper
 ip address 59.49.15.xxx 255.255.240.0
 tcp mss 1460
 nat outbound 2000
#
interface GigabitEthernet0/2
 port link-mode route
 ip address 192.168.60.253 255.255.255.0
#
 scheduler logfile size 16
#
line class aux
 user-role network-admin
#
line class tty
 user-role network-operator
#
line class vty
 user-role network-operator
#
line aux 0
 user-role network-admin
#
line vty 0 4
 authentication-mode scheme
 user-role network-admin
 user-role network-operator
#
line vty 5 15 
 user-role network-admin
#
line vty 16 63
 user-role network-operator
#
 ip route-static 0.0.0.0 0 59.49.15.···
#
 ssh server enable
 ssh server acl 3000
#
acl basic 2000
 rule 10 permit
#
acl advanced 3000
 rule 5 permit ip source 192.168.60.0 0.0.0.255
#
domain system
#
 domain default enable system
#
role name level-0
 description Predefined level-0 role
#             
role name level-1
 description Predefined level-1 role
#
role name level-2
 description Predefined level-2 role
#
role name level-3
 description Predefined level-3 role
#
role name level-4
 description Predefined level-4 role
#
role name level-5
 description Predefined level-5 role
#
role name level-6
 description Predefined level-6 role
#
role name level-7
 description Predefined level-7 role
#
role name level-8
 description Predefined level-8 role
#
role name level-9
 description Predefined level-9 role
#
role name level-10
 description Predefined level-10 role
#
role name level-11
 description Predefined level-11 role
#
role name level-12
 description Predefined level-12 role
#
role name level-13
 description Predefined level-13 role
#
role name level-14
 description Predefined level-14 role
#
user-group system
#
local-user admin class manage
 password hash ···
 service-type ssh telnet http
 authorization-attribute user-role network-admin
 authorization-attribute user-role network-operator
#
local-user bingo class manage
 password hash ···
 service-type ssh telnet
 authorization-attribute user-role network-admin
 authorization-attribute user-role network-operator
#
public-key peer 127.0.0.1
 public-key-code begin
   ···
 public-key-code end
 peer-public-key end
#
connection-limit policy 1
#
wlan global-configuration
 control-address disable
#
wlan ap-group default-group
#
return