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I must add the 802.1P TAG on the pppoe connections coming from a particular
interface on Cisco ASR1001X

I have added:

vpdn-group FTTH_COS_2
protocol l2tp
virtual-template 2
lcp renegotiation always
no l2tp tunnel authentication
ip mtu adjust
relay pppoe bba-group FTTH_COS_2

bba-group pppoe global
control-packets vlan cos 0

bba-group pppoe FTTH_COS_2
virtual-template 2
control-packets vlan cos 2

interface GigabitEthernet0/0/0
mtu 1600
no ip address
no negotiation auto
pppoe enable group FTTH_COS_2
interface GigabitEthernet0/0/0.2001
encapsulation dot1Q 2001
pppoe enable group FTTH_COS_2

interface Virtual-Template2
ip unnumbered Loopback0
no ip redirects
no ip unreachables
no ip proxy-arp
no logging event link-status
no peer default ip address
no snmp trap link-status
no keepalive
ppp authentication chap ppp-radius
ppp authorization network-radius
ppp multilink
ppp multilink fragment disable

but according to my supplier, my cisco does not tag on 802.1P the COS has 2
suddenly their access-list block

How can I check if my router is tagged okay?

thank you
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