here is the lib:
r1#
r1#
r1#show mpls forw
r1#show mpls forw
 |~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label  | vrf      | iface     | hop     | label      | targets | bytes |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 5179   | null     | null      | null    | unlabelled |         | 0     |
 | 5180   | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 5181   | v1:4     | ethernet1 | 1.1.1.2 | 157834     |         | 0     |
 | 5182   | v1:4     | ethernet1 | 1.1.1.2 | 157835     |         | 0     |
 | 5183   | v1:4     | ethernet1 | 1.1.1.2 | 157836     |         | 0     |
 | 5184   | null     | null      | null    | unlabelled |         | 0     |
 | 5185   | null     | null      | null    | unlabelled |         | 0     |
 | 5186   | null     | null      | null    | unlabelled |         | 0     |
 | 5187   | null     | null      | null    | unlabelled |         | 0     |
 | 5188   | null     | null      | null    | unlabelled |         | 0     |
 | 54777  | null     | null      | null    | unlabelled |         | 0     |
 | 54778  | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 54779  | v1:6     | ethernet1 | 1234::2 | 772040     |         | 0     |
 | 54780  | v1:6     | ethernet1 | 1234::2 | 772041     |         | 0     |
 | 54781  | v1:6     | ethernet1 | 1234::2 | 772042     |         | 0     |
 | 54782  | null     | null      | null    | unlabelled |         | 0     |
 | 54783  | null     | null      | null    | unlabelled |         | 0     |
 | 54784  | null     | null      | null    | unlabelled |         | 0     |
 | 54785  | null     | null      | null    | unlabelled |         | 0     |
 | 54786  | null     | null      | null    | unlabelled |         | 0     |
 | 104125 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 191508 | v1:4     | ethernet1 | 1.1.1.2 | 3          |         | 0     |
 | 369214 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 448088 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 573647 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 596015 | v1:6     | ethernet1 | 1234::2 | 3          |         | 0     |
 | 671684 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 823235 | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 943592 | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 996464 | 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 |
 |---------|----------|-----------|---------|------------|---------|-------|
 | 72133   | v1:4     | ethernet1 | 1.1.1.1 | 3          |         | 0     |
 | 157832  | null     | null      | null    | unlabelled |         | 0     |
 | 157833  | v1:4     | ethernet1 | 1.1.1.1 | 5180       |         | 1280  |
 | 157834  | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 157835  | v1:4     | ethernet2 | 1.1.2.3 | 103489     |         | 640   |
 | 157836  | v1:4     | ethernet2 | 1.1.2.3 | 103490     |         | 640   |
 | 157837  | null     | null      | null    | unlabelled |         | 0     |
 | 157838  | null     | null      | null    | unlabelled |         | 0     |
 | 157839  | null     | null      | null    | unlabelled |         | 0     |
 | 157840  | null     | null      | null    | unlabelled |         | 0     |
 | 157841  | null     | null      | null    | unlabelled |         | 0     |
 | 231949  | v1:6     | ethernet2 | 1235::3 | 3          |         | 0     |
 | 315795  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 336603  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 398886  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 677173  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 772038  | null     | null      | null    | unlabelled |         | 0     |
 | 772039  | v1:6     | ethernet1 | 1234::1 | 54778      |         | 1280  |
 | 772040  | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 772041  | v1:6     | ethernet2 | 1235::3 | 397905     |         | 640   |
 | 772042  | v1:6     | ethernet2 | 1235::3 | 397906     |         | 640   |
 | 772043  | null     | null      | null    | unlabelled |         | 0     |
 | 772044  | null     | null      | null    | unlabelled |         | 0     |
 | 772045  | null     | null      | null    | unlabelled |         | 0     |
 | 772046  | null     | null      | null    | unlabelled |         | 0     |
 | 772047  | null     | null      | null    | unlabelled |         | 0     |
 | 826340  | v1:6     | ethernet1 | 1234::1 | 3          |         | 0     |
 | 856987  | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 887044  | v1:4     | ethernet2 | 1.1.2.3 | 3          |         | 0     |
 | 906959  | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 1023160 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 1023317 | tester: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 |
 |---------|----------|-----------|---------|------------|---------|-------|
 | 36340   | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 42854   | v1:6     | ethernet1 | 1235::2 | 3          |         | 0     |
 | 103486  | null     | null      | null    | unlabelled |         | 0     |
 | 103487  | v1:4     | ethernet1 | 1.1.2.2 | 157833     |         | 640   |
 | 103488  | v1:4     | ethernet1 | 1.1.2.2 | 157834     |         | 640   |
 | 103489  | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 103490  | v1:4     | ethernet2 | 1.1.3.4 | 244523     |         | 1280  |
 | 103491  | null     | null      | null    | unlabelled |         | 0     |
 | 103492  | null     | null      | null    | unlabelled |         | 0     |
 | 103493  | null     | null      | null    | unlabelled |         | 0     |
 | 103494  | null     | null      | null    | unlabelled |         | 0     |
 | 103495  | null     | null      | null    | unlabelled |         | 0     |
 | 196139  | v1:4     | ethernet1 | 1.1.2.2 | 3          |         | 0     |
 | 232848  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 245811  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 306440  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 397902  | null     | null      | null    | unlabelled |         | 0     |
 | 397903  | v1:6     | ethernet1 | 1235::2 | 772039     |         | 640   |
 | 397904  | v1:6     | ethernet1 | 1235::2 | 772040     |         | 640   |
 | 397905  | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 397906  | v1:6     | ethernet2 | 1236::4 | 980239     |         | 1280  |
 | 397907  | null     | null      | null    | unlabelled |         | 0     |
 | 397908  | null     | null      | null    | unlabelled |         | 0     |
 | 397909  | null     | null      | null    | unlabelled |         | 0     |
 | 397910  | null     | null      | null    | unlabelled |         | 0     |
 | 397911  | null     | null      | null    | unlabelled |         | 0     |
 | 398085  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 805431  | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 919717  | v1:4     | ethernet2 | 1.1.3.4 | 3          |         | 0     |
 | 959836  | v1:6     | ethernet2 | 1236::4 | 3          |         | 0     |
 | 1019811 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 1026115 | 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 |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 16278  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 40395  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 174182 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 194083 | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 244519 | null     | null      | null    | unlabelled |         | 0     |
 | 244520 | v1:4     | ethernet1 | 1.1.3.3 | 103487     |         | 0     |
 | 244521 | v1:4     | ethernet1 | 1.1.3.3 | 103488     |         | 0     |
 | 244522 | v1:4     | ethernet1 | 1.1.3.3 | 103489     |         | 0     |
 | 244523 | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 244524 | null     | null      | null    | unlabelled |         | 0     |
 | 244525 | null     | null      | null    | unlabelled |         | 0     |
 | 244526 | null     | null      | null    | unlabelled |         | 0     |
 | 244527 | null     | null      | null    | unlabelled |         | 0     |
 | 244528 | null     | null      | null    | unlabelled |         | 0     |
 | 303260 | v1:4     | ethernet1 | 1.1.3.3 | 3          |         | 0     |
 | 482549 | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 661750 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 691684 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 811508 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 851147 | v1:6     | ethernet1 | 1236::3 | 3          |         | 0     |
 | 980235 | null     | null      | null    | unlabelled |         | 0     |
 | 980236 | v1:6     | ethernet1 | 1236::3 | 397903     |         | 0     |
 | 980237 | v1:6     | ethernet1 | 1236::3 | 397904     |         | 0     |
 | 980238 | v1:6     | ethernet1 | 1236::3 | 397905     |         | 0     |
 | 980239 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 980240 | null     | null      | null    | unlabelled |         | 0     |
 | 980241 | null     | null      | null    | unlabelled |         | 0     |
 | 980242 | null     | null      | null    | unlabelled |         | 0     |
 | 980243 | null     | null      | null    | unlabelled |         | 0     |
 | 980244 | null     | null      | null    | unlabelled |         | 0     |
 |________|__________|___________|_________|____________|_________|_______|
r4#
r4#