You can use the egress tagging functionality to add a VLAN tag to the packet transmitted from the tool port.
pbnoscli# configure terminal
pbnoscli(config)# interface ethernet Ethernet4/1
pbnoscli(config-if)# egress-
egress-tagging Add egress tagging
pbnoscli(config-if)# egress-tagging enable
pbnoscli(config-if)#
pbnoscli# show interface npb Ethernet4/1
===================================
Interface : Ethernet4/1
===================================
Type : tool
Mode : vlan-aware
Ingress-vlan : 6
Egress-tagging : enable
Loopback-mode : disable
pbnoscli#
pbnoscli# show running-config
configure terminal
!
interface ethernet Ethernet4/1
type tool
egress-tagging enable
mode vlan-aware
!
interface mgmt
ip address 10.4.4.53/23 gateway 10.4.4.1
!
pbnoscli#