here is the lib:
r1#
r1#
r1#show mpls forw
r1#show mpls forw
 |~~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label   | vrf      | iface     | hop     | label      | targets | bytes |
 |---------|----------|-----------|---------|------------|---------|-------|
 | 3487    | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 28895   | null     | null      | null    | unlabelled |         | 0     |
 | 28896   | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 28897   | v1:4     | ethernet1 | 1.1.1.2 | 943367     |         | 0     |
 | 28898   | v1:4     | ethernet1 | 1.1.1.2 | 943368     |         | 0     |
 | 28899   | v1:4     | ethernet1 | 1.1.1.2 | 943369     |         | 0     |
 | 28900   | null     | null      | null    | unlabelled |         | 0     |
 | 28901   | null     | null      | null    | unlabelled |         | 0     |
 | 28902   | null     | null      | null    | unlabelled |         | 0     |
 | 28903   | null     | null      | null    | unlabelled |         | 0     |
 | 28904   | null     | null      | null    | unlabelled |         | 0     |
 | 29225   | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 52882   | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 58627   | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 201605  | v1:4     | ethernet1 | 1.1.1.2 | 3          |         | 0     |
 | 233188  | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 402724  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 600180  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 668086  | v1:6     | ethernet1 | 1234::2 | 3          |         | 0     |
 | 946332  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 1041029 | null     | null      | null    | unlabelled |         | 0     |
 | 1041030 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 1041031 | v1:6     | ethernet1 | 1234::2 | 679686     |         | 0     |
 | 1041032 | v1:6     | ethernet1 | 1234::2 | 679687     |         | 0     |
 | 1041033 | v1:6     | ethernet1 | 1234::2 | 679688     |         | 0     |
 | 1041034 | null     | null      | null    | unlabelled |         | 0     |
 | 1041035 | null     | null      | null    | unlabelled |         | 0     |
 | 1041036 | null     | null      | null    | unlabelled |         | 0     |
 | 1041037 | null     | null      | null    | unlabelled |         | 0     |
 | 1041038 | null     | null      | null    | unlabelled |         | 0     |
 |_________|__________|___________|_________|____________|_________|_______|
r1#
r1#
here is the lib:
r2#
r2#
r2#show mpls forw
r2#show mpls forw
 |~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label  | vrf      | iface     | hop     | label      | targets | bytes |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 216277 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 226043 | v1:4     | ethernet2 | 1.1.2.3 | 3          |         | 0     |
 | 237016 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 352066 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 366801 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 521973 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 526356 | v1:6     | ethernet1 | 1234::1 | 3          |         | 0     |
 | 545450 | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 679684 | null     | null      | null    | unlabelled |         | 0     |
 | 679685 | v1:6     | ethernet1 | 1234::1 | 1041030    |         | 1280  |
 | 679686 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 679687 | v1:6     | ethernet2 | 1235::3 | 747309     |         | 640   |
 | 679688 | v1:6     | ethernet2 | 1235::3 | 747310     |         | 640   |
 | 679689 | null     | null      | null    | unlabelled |         | 0     |
 | 679690 | null     | null      | null    | unlabelled |         | 0     |
 | 679691 | null     | null      | null    | unlabelled |         | 0     |
 | 679692 | null     | null      | null    | unlabelled |         | 0     |
 | 679693 | null     | null      | null    | unlabelled |         | 0     |
 | 752748 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 818274 | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 856314 | v1:4     | ethernet1 | 1.1.1.1 | 3          |         | 0     |
 | 860976 | v1:6     | ethernet2 | 1235::3 | 3          |         | 0     |
 | 943365 | null     | null      | null    | unlabelled |         | 0     |
 | 943366 | v1:4     | ethernet1 | 1.1.1.1 | 28896      |         | 1280  |
 | 943367 | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 943368 | v1:4     | ethernet2 | 1.1.2.3 | 527961     |         | 640   |
 | 943369 | v1:4     | ethernet2 | 1.1.2.3 | 527962     |         | 640   |
 | 943370 | null     | null      | null    | unlabelled |         | 0     |
 | 943371 | null     | null      | null    | unlabelled |         | 0     |
 | 943372 | null     | null      | null    | unlabelled |         | 0     |
 | 943373 | null     | null      | null    | unlabelled |         | 0     |
 | 943374 | null     | null      | null    | unlabelled |         | 0     |
 |________|__________|___________|_________|____________|_________|_______|
r2#
r2#
here is the lib:
r3#
r3#
r3#show mpls forw
r3#show mpls forw
 |~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label  | vrf      | iface     | hop     | label      | targets | bytes |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 88833  | v1:4     | ethernet2 | 1.1.3.4 | 3          |         | 0     |
 | 178603 | v1:4     | ethernet1 | 1.1.2.2 | 3          |         | 0     |
 | 220660 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 527958 | null     | null      | null    | unlabelled |         | 0     |
 | 527959 | v1:4     | ethernet1 | 1.1.2.2 | 943366     |         | 640   |
 | 527960 | v1:4     | ethernet1 | 1.1.2.2 | 943367     |         | 640   |
 | 527961 | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 527962 | v1:4     | ethernet2 | 1.1.3.4 | 463718     |         | 1280  |
 | 527963 | null     | null      | null    | unlabelled |         | 0     |
 | 527964 | null     | null      | null    | unlabelled |         | 0     |
 | 527965 | null     | null      | null    | unlabelled |         | 0     |
 | 527966 | null     | null      | null    | unlabelled |         | 0     |
 | 527967 | null     | null      | null    | unlabelled |         | 0     |
 | 569924 | v1:6     | ethernet2 | 1236::4 | 3          |         | 0     |
 | 714649 | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 747306 | null     | null      | null    | unlabelled |         | 0     |
 | 747307 | v1:6     | ethernet1 | 1235::2 | 679685     |         | 640   |
 | 747308 | v1:6     | ethernet1 | 1235::2 | 679686     |         | 640   |
 | 747309 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 747310 | v1:6     | ethernet2 | 1236::4 | 406635     |         | 1280  |
 | 747311 | null     | null      | null    | unlabelled |         | 0     |
 | 747312 | null     | null      | null    | unlabelled |         | 0     |
 | 747313 | null     | null      | null    | unlabelled |         | 0     |
 | 747314 | null     | null      | null    | unlabelled |         | 0     |
 | 747315 | null     | null      | null    | unlabelled |         | 0     |
 | 770853 | v1:6     | ethernet1 | 1235::2 | 3          |         | 0     |
 | 778866 | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 791136 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 791841 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 792651 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 969625 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 984487 | tester:6 | null      | null    | unlabelled | local   | 0     |
 |________|__________|___________|_________|____________|_________|_______|
r3#
r3#
here is the lib:
r4#
r4#
r4#show mpls forw
r4#show mpls forw
 |~~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label   | vrf      | iface     | hop     | label      | targets | bytes |
 |---------|----------|-----------|---------|------------|---------|-------|
 | 77044   | v1:4     | ethernet1 | 1.1.3.3 | 3          |         | 0     |
 | 170043  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 265099  | v1:6     | ethernet1 | 1236::3 | 3          |         | 0     |
 | 324061  | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 406631  | null     | null      | null    | unlabelled |         | 0     |
 | 406632  | v1:6     | ethernet1 | 1236::3 | 747307     |         | 0     |
 | 406633  | v1:6     | ethernet1 | 1236::3 | 747308     |         | 0     |
 | 406634  | v1:6     | ethernet1 | 1236::3 | 747309     |         | 0     |
 | 406635  | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 406636  | null     | null      | null    | unlabelled |         | 0     |
 | 406637  | null     | null      | null    | unlabelled |         | 0     |
 | 406638  | null     | null      | null    | unlabelled |         | 0     |
 | 406639  | null     | null      | null    | unlabelled |         | 0     |
 | 406640  | null     | null      | null    | unlabelled |         | 0     |
 | 463714  | null     | null      | null    | unlabelled |         | 0     |
 | 463715  | v1:4     | ethernet1 | 1.1.3.3 | 527959     |         | 0     |
 | 463716  | v1:4     | ethernet1 | 1.1.3.3 | 527960     |         | 0     |
 | 463717  | v1:4     | ethernet1 | 1.1.3.3 | 527961     |         | 0     |
 | 463718  | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 463719  | null     | null      | null    | unlabelled |         | 0     |
 | 463720  | null     | null      | null    | unlabelled |         | 0     |
 | 463721  | null     | null      | null    | unlabelled |         | 0     |
 | 463722  | null     | null      | null    | unlabelled |         | 0     |
 | 463723  | null     | null      | null    | unlabelled |         | 0     |
 | 497097  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 505790  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 780617  | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 819486  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 942429  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 1026371 | tester:4 | null      | null    | unlabelled | local   | 0     |
 |_________|__________|___________|_________|____________|_________|_______|
r4#
r4#