here is the lib:
r1#
r1#
r1#show mpls forw
r1#show mpls forw
 |~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label  | vrf      | iface     | hop     | label      | targets | bytes |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 168538 | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 244823 | null     | null      | null    | unlabelled |         | 0     |
 | 244824 | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 244825 | v1:4     | ethernet1 | 1.1.1.2 | 174052     |         | 0     |
 | 244826 | v1:4     | ethernet1 | 1.1.1.2 | 174053     |         | 0     |
 | 244827 | v1:4     | ethernet1 | 1.1.1.2 | 174054     |         | 0     |
 | 244828 | null     | null      | null    | unlabelled |         | 0     |
 | 244829 | null     | null      | null    | unlabelled |         | 0     |
 | 244830 | null     | null      | null    | unlabelled |         | 0     |
 | 244831 | null     | null      | null    | unlabelled |         | 0     |
 | 244832 | null     | null      | null    | unlabelled |         | 0     |
 | 295247 | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 369010 | v1:6     | ethernet1 | 1234::2 | 3          |         | 0     |
 | 410485 | v1:4     | ethernet1 | 1.1.1.2 | 3          |         | 0     |
 | 676371 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 885764 | null     | null      | null    | unlabelled |         | 0     |
 | 885765 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 885766 | v1:6     | ethernet1 | 1234::2 | 717636     |         | 0     |
 | 885767 | v1:6     | ethernet1 | 1234::2 | 717637     |         | 0     |
 | 885768 | v1:6     | ethernet1 | 1234::2 | 717638     |         | 0     |
 | 885769 | null     | null      | null    | unlabelled |         | 0     |
 | 885770 | null     | null      | null    | unlabelled |         | 0     |
 | 885771 | null     | null      | null    | unlabelled |         | 0     |
 | 885772 | null     | null      | null    | unlabelled |         | 0     |
 | 885773 | null     | null      | null    | unlabelled |         | 0     |
 | 971794 | tester:4 | null      | null    | unlabelled | local   | 0     |
 |________|__________|___________|_________|____________|_________|_______|
r1#
r1#
here is the lib:
r2#
r2#
r2#show mpls forw
r2#show mpls forw
 |~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label  | vrf      | iface     | hop     | label      | targets | bytes |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 17780  | v1:4     | ethernet2 | 1.1.2.3 | 3          |         | 0     |
 | 174050 | null     | null      | null    | unlabelled |         | 0     |
 | 174051 | v1:4     | ethernet1 | 1.1.1.1 | 244824     |         | 1280  |
 | 174052 | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 174053 | v1:4     | ethernet2 | 1.1.2.3 | 61517      |         | 640   |
 | 174054 | v1:4     | ethernet2 | 1.1.2.3 | 61518      |         | 640   |
 | 174055 | null     | null      | null    | unlabelled |         | 0     |
 | 174056 | null     | null      | null    | unlabelled |         | 0     |
 | 174057 | null     | null      | null    | unlabelled |         | 0     |
 | 174058 | null     | null      | null    | unlabelled |         | 0     |
 | 174059 | null     | null      | null    | unlabelled |         | 0     |
 | 190487 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 232249 | v1:4     | ethernet1 | 1.1.1.1 | 3          |         | 0     |
 | 236818 | v1:6     | ethernet1 | 1234::1 | 3          |         | 0     |
 | 394067 | v1:6     | ethernet2 | 1235::3 | 3          |         | 0     |
 | 422785 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 460009 | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 717634 | null     | null      | null    | unlabelled |         | 0     |
 | 717635 | v1:6     | ethernet1 | 1234::1 | 885765     |         | 1280  |
 | 717636 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 717637 | v1:6     | ethernet2 | 1235::3 | 542614     |         | 640   |
 | 717638 | v1:6     | ethernet2 | 1235::3 | 542615     |         | 640   |
 | 717639 | null     | null      | null    | unlabelled |         | 0     |
 | 717640 | null     | null      | null    | unlabelled |         | 0     |
 | 717641 | null     | null      | null    | unlabelled |         | 0     |
 | 717642 | null     | null      | null    | unlabelled |         | 0     |
 | 717643 | null     | null      | null    | unlabelled |         | 0     |
 | 957097 | v1:4     | null      | null    | unlabelled | local   | 0     |
 |________|__________|___________|_________|____________|_________|_______|
r2#
r2#
here is the lib:
r3#
r3#
r3#show mpls forw
r3#show mpls forw
 |~~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label   | vrf      | iface     | hop     | label      | targets | bytes |
 |---------|----------|-----------|---------|------------|---------|-------|
 | 61514   | null     | null      | null    | unlabelled |         | 0     |
 | 61515   | v1:4     | ethernet1 | 1.1.2.2 | 174051     |         | 640   |
 | 61516   | v1:4     | ethernet1 | 1.1.2.2 | 174052     |         | 640   |
 | 61517   | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 61518   | v1:4     | ethernet2 | 1.1.3.4 | 978900     |         | 1280  |
 | 61519   | null     | null      | null    | unlabelled |         | 0     |
 | 61520   | null     | null      | null    | unlabelled |         | 0     |
 | 61521   | null     | null      | null    | unlabelled |         | 0     |
 | 61522   | null     | null      | null    | unlabelled |         | 0     |
 | 61523   | null     | null      | null    | unlabelled |         | 0     |
 | 294833  | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 350661  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 542611  | null     | null      | null    | unlabelled |         | 0     |
 | 542612  | v1:6     | ethernet1 | 1235::2 | 717635     |         | 640   |
 | 542613  | v1:6     | ethernet1 | 1235::2 | 717636     |         | 640   |
 | 542614  | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 542615  | v1:6     | ethernet2 | 1236::4 | 812697     |         | 1280  |
 | 542616  | null     | null      | null    | unlabelled |         | 0     |
 | 542617  | null     | null      | null    | unlabelled |         | 0     |
 | 542618  | null     | null      | null    | unlabelled |         | 0     |
 | 542619  | null     | null      | null    | unlabelled |         | 0     |
 | 542620  | null     | null      | null    | unlabelled |         | 0     |
 | 606287  | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 763822  | v1:6     | ethernet1 | 1235::2 | 3          |         | 0     |
 | 786473  | v1:4     | ethernet1 | 1.1.2.2 | 3          |         | 0     |
 | 834424  | v1:4     | ethernet2 | 1.1.3.4 | 3          |         | 0     |
 | 912603  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 1022244 | v1:6     | ethernet2 | 1236::4 | 3          |         | 0     |
 |_________|__________|___________|_________|____________|_________|_______|
r3#
r3#
here is the lib:
r4#
r4#
r4#show mpls forw
r4#show mpls forw
 |~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label  | vrf      | iface     | hop     | label      | targets | bytes |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 32770  | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 332427 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 360510 | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 485431 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 695934 | v1:4     | ethernet1 | 1.1.3.3 | 3          |         | 0     |
 | 812693 | null     | null      | null    | unlabelled |         | 0     |
 | 812694 | v1:6     | ethernet1 | 1236::3 | 542612     |         | 0     |
 | 812695 | v1:6     | ethernet1 | 1236::3 | 542613     |         | 0     |
 | 812696 | v1:6     | ethernet1 | 1236::3 | 542614     |         | 0     |
 | 812697 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 812698 | null     | null      | null    | unlabelled |         | 0     |
 | 812699 | null     | null      | null    | unlabelled |         | 0     |
 | 812700 | null     | null      | null    | unlabelled |         | 0     |
 | 812701 | null     | null      | null    | unlabelled |         | 0     |
 | 812702 | null     | null      | null    | unlabelled |         | 0     |
 | 849442 | v1:6     | ethernet1 | 1236::3 | 3          |         | 0     |
 | 978896 | null     | null      | null    | unlabelled |         | 0     |
 | 978897 | v1:4     | ethernet1 | 1.1.3.3 | 61515      |         | 0     |
 | 978898 | v1:4     | ethernet1 | 1.1.3.3 | 61516      |         | 0     |
 | 978899 | v1:4     | ethernet1 | 1.1.3.3 | 61517      |         | 0     |
 | 978900 | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 978901 | null     | null      | null    | unlabelled |         | 0     |
 | 978902 | null     | null      | null    | unlabelled |         | 0     |
 | 978903 | null     | null      | null    | unlabelled |         | 0     |
 | 978904 | null     | null      | null    | unlabelled |         | 0     |
 | 978905 | null     | null      | null    | unlabelled |         | 0     |
 |________|__________|___________|_________|____________|_________|_______|
r4#
r4#