hi community,
I got some confused of ospf lsa3.
topology:
r1 --a12-- r2 --a0-- r3 --a34-- r4
| |
+---a23 ---+
r1(intf:r1r2) and r2(intf:r2r1) are belong to area 12, ptp network: 10.0.12.0/30
r2(intf:r20r30) and r3(intf:r30r20) are composed to area 0, ptp network:
10.0.100.0/30
r2(intf:r2r3) and r3(intf:r3r2) are composed to area 0, ptp network:
10.0.23.0/30
r3(intf:r3r4) and r4(intf:r4r3) are cmposed to area 34, ptp network:
10.0.34.0/30
r1 has a stub net: 10.1.1.0/30
r4 has a stub net: 10.4.2.0/30
why r2/r3 regenerated lsa3 and advertise on area 23, isn't it prohibited ABR to
flood lsa3 to non-backbone area?
r2
```
bird> s o l type 3 area 23
Area 0.0.0.23
Type LS ID Router Sequence Age Checksum
0003 10.0.12.3 10.0.0.2 80000004 1088 6885
0003 10.0.34.3 10.0.0.2 80000004 1064 d9f3
0003 10.0.100.3 10.0.0.2 80000004 1088 9cf8
0003 10.1.1.3 10.0.0.2 80000004 1070 3ab3
0003 10.4.2.3 10.0.0.2 80000004 1060 6f70
0003 10.0.12.3 10.0.0.3 80000004 1063 c61c
0003 10.0.34.3 10.0.0.3 80000004 1069 6f67
0003 10.0.100.3 10.0.0.3 80000004 1069 96fd
0003 10.1.1.3 10.0.0.3 80000004 1063 984a
0003 10.4.2.3 10.0.0.3 80000004 1062 05e3
```
