We need to use the S5720 to replace the Dell. The customer deploy the port configuration on the Dell, the configuration is as below:
###################################
interface Gi2/0/14
spanning-tree portfast
switchport mode general
switchport general pvid 3
switchport general allowed vlan add 3
switchport general allowed vlan remove 1
exit
!
interface Gi2/0/15
spanning-tree portfast
switchport mode general
switchport general pvid 21
switchport general allowed vlan add 21
switchport general allowed vlan remove 1
exit
!
interface Gi2/0/16
spanning-tree portfast
switchport mode general
switchport general pvid 21
switchport general allowed vlan add 21
switchport general allowed vlan remove 1
exit
##################################
stp edged-port enable
port link-type trunk
port trunk pvid vlan 3
port trunk allow-pass vlan 3
undo port trunk allow-pass vlan 1
quit
#
stp edged-port enable
port link-type trunk
port trunk pvid vlan 21
port trunk allow-pass vlan 21
undo port trunk allow-pass vlan 1
quit
#
stp edged-port enable
port link-type trunk
port trunk pvid vlan 21
port trunk allow-pass vlan 21
undo port trunk allow-pass vlan 1
quit
####################################
The configuration is simple on Huawei S5720 .
