Symptom
When ever L2 Xconnect PW is UP, and if we attempt to remove the VLAN restriction from subslot 0/1, using below CLI
hw-module subslot 0/1 ethernet vlan unlimited
Immediately Data plane traffic will get blackholed.
Example
======
interface TenGigabitEthernet0/1/0.1000
description *** Extension to via L2TP tunnel ***
encapsulation dot1Q 1000
xconnect 100.128.37.20 1000 encapsulation l2tpv3 pw-class L2TPv3
end
ASR1002-HX#sh xconn all
Legend: XC ST=Xconnect State S1=Segment1 State S2=Segment2 State
UP=Up DN=Down AD=Admin Down IA=Inactive
SB=Standby HS=Hot Standby RV=Recovering NH=No Hardware
XC ST Segment 1 S1 Segment 2 S2
------+---------------------------------+--+---------------------------------+--
UP pri ac Te0/1/0.1000:1000(Eth VLAN) UP l2tp 100.128.37.20:1000 UP
Conditions
This issue is only noticed with the following combination of hardware Need to enable back VLAN limitation, in order to resume the traffic across L2 Xconnect circuits
i.e,
" no hw-module subslot 0/1 ethernet vlan unlimited"
/BUILT-IN-EPA-8x10G,
The following CLI "hw-module subslot 0/1 ethernet vlan unlimited", will have a traffic impact on L2 Xconnect circuits
Workaround
Need to enable back VLAN limitation, in order to resume the traffic across L2 Xconnect circuits
i.e,
" no hw-module subslot 0/1 ethernet vlan unlimited"
Further Problem Description
