Hi Folks,
Just my 2 cents on this….
If you want to troubleshoot based on EXP values marked by your peer; I would suggest to configure a firewall mpls filter to count EXP tagged packets and apply to input direction on the Core facing interface.
set firewall family mpls filter interface_in term a from exp 7
set firewall family mpls filter interface_in term a then count exp7
set firewall family mpls filter interface_in term a then accept
set firewall family mpls filter interface_in term b from exp 6
set firewall family mpls filter interface_in term b then count exp6
set firewall family mpls filter interface_in term b then accept
set firewall family mpls filter interface_in term c from exp 5
set firewall family mpls filter interface_in term c then count exp5
set firewall family mpls filter interface_in term c then accept
set firewall family mpls filter interface_in term d from exp 4
set firewall family mpls filter interface_in term d then count exp4
set firewall family mpls filter interface_in term d then accept
set firewall family mpls filter interface_in term e from exp 3
set firewall family mpls filter interface_in term e then count exp3
set firewall family mpls filter interface_in term e then accept
set firewall family mpls filter interface_in term f from exp 2
set firewall family mpls filter interface_in term f then count exp2
set firewall family mpls filter interface_in term f then accept
set firewall family mpls filter interface_in term g from exp 1
set firewall family mpls filter interface_in term g then count exp1
set firewall family mpls filter interface_in term g then accept
set firewall family mpls filter interface_in term h from exp 0
set firewall family mpls filter interface_in term h then count exp0
set firewall family mpls filter interface_in term h then accept
set firewall family mpls filter interface_in term i then accept