1- Hows the router id elect in OSPF implementation of JUNOS?
ospf in junos always takes router-id configured under routing-option.
If no RID configured , it will take the lowest loopback address configured.
If no loopback , then it will take lower IP configured among the interface.
Before Junos 8.5 ( i guess ) it was mandatory to add loopback address in ospf.
2- If we change the router id then what happens? I mean OSPF will restart or what?
Ospf neighbor ship resets every time you change RID
- Arun