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troy
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OSPF did a thing...

Mon Dec 02, 2019 4:55 am

So, OSPF did a thing. Not really understanding it. Nothing useful in the logs.

Routers are connected by a 1M ethernet patch cable. Both running 6.44.5. Both have uptime of 130 days. OSPF config is about as simple as it gets and is unchanged in the 4-5 years these routers (and their predecessors) have been in service.


Router 1 (CCR1036-8G-2S+):
/routing ospf instance
set [ find default=yes ] distribute-default=always-as-type-1 redistribute-connected=as-type-1 redistribute-static=as-type-1 router-id=172.23.0.1
/routing ospf network
add area=backbone network=123.45.67.89/30
...
dec/01 21:01:44 route,ospf,info Database Description packet has init bit set in middle of an exchange 
dec/01 21:01:44 route,ospf,info OSPFv2 neighbor 172.23.0.2: state change from Full to 2-Way 
dec/01 21:02:29 route,ospf,info OSPFv2 neighbor 172.23.0.2: state change from Exchange to 2-Way 
dec/01 21:03:09 route,ospf,info OSPFv2 neighbor 172.23.0.2: state change from Exchange to 2-Way 
dec/01 21:03:50 route,ospf,info OSPFv2 neighbor 172.23.0.2: state change from Exchange to 2-Way 
dec/01 21:04:32 route,ospf,info OSPFv2 neighbor 172.23.0.2: state change from Exchange to 2-Way 
dec/01 21:05:13 route,ospf,info OSPFv2 neighbor 172.23.0.2: state change from Exchange to 2-Way 
dec/01 21:05:54 route,ospf,info OSPFv2 neighbor 172.23.0.2: state change from Exchange to 2-Way 
dec/01 21:06:35 route,ospf,info OSPFv2 neighbor 172.23.0.2: state change from Exchange to 2-Way 
 
troy
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Re: OSPF did a thing...

Mon Dec 02, 2019 4:57 am

Router 2 (CCR1009-7G-1C-1S+)::
/routing ospf instance
set [ find default=yes ] redistribute-connected=as-type-1 redistribute-static=as-type-1 router-id=172.23.0.2
/routing ospf network
add area=backbone network=123.45.67.90/30

...

dec/01 21:01:44 route,ospf,info OSPFv2 neighbor 172.23.0.1: state change from Full to Down 
dec/01 21:02:29 route,ospf,info Database Description packet has different master status flag 
dec/01 21:02:29 route,ospf,info     new master flag=false 
dec/01 21:02:29 route,ospf,info OSPFv2 neighbor 172.23.0.1: state change from Full to 2-Way 
dec/01 21:03:10 route,ospf,info Database Description packet has different master status flag 
dec/01 21:03:10 route,ospf,info     new master flag=false 
dec/01 21:03:10 route,ospf,info OSPFv2 neighbor 172.23.0.1: state change from Full to 2-Way 
dec/01 21:03:51 route,ospf,info Database Description packet has different master status flag 
dec/01 21:03:51 route,ospf,info     new master flag=false 
dec/01 21:03:51 route,ospf,info OSPFv2 neighbor 172.23.0.1: state change from Full to 2-Way 
dec/01 21:04:32 route,ospf,info Database Description packet has different master status flag 
dec/01 21:04:32 route,ospf,info     new master flag=false 
dec/01 21:04:32 route,ospf,info OSPFv2 neighbor 172.23.0.1: state change from Full to 2-Way 
dec/01 21:05:13 route,ospf,info Database Description packet has different master status flag 
dec/01 21:05:13 route,ospf,info     new master flag=false 
dec/01 21:05:13 route,ospf,info OSPFv2 neighbor 172.23.0.1: state change from Full to 2-Way 
dec/01 21:05:54 route,ospf,info Database Description packet has different master status flag 
dec/01 21:05:54 route,ospf,info     new master flag=false 
dec/01 21:05:54 route,ospf,info OSPFv2 neighbor 172.23.0.1: state change from Full to 2-Way 
dec/01 21:06:35 route,ospf,info Database Description packet has different master status flag 
dec/01 21:06:35 route,ospf,info     new master flag=false 
 
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CZFan
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Re: OSPF did a thing...

Mon Dec 02, 2019 2:07 pm

With the limited info provided, my guess will be you probably have 2 DR/Master fighting over who should be DR/Master
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troy
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Re: OSPF did a thing...

Wed Dec 04, 2019 11:07 pm

That's kind of my guess to.

As for limited info... you see what I see. Restarting the process on R1 resolved the issue and I'm unable to reproduce it to get a debug log, so there's that.
 
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Re: OSPF did a thing...

Sun Dec 08, 2019 6:33 pm

U have 2 dr on same l2 change type of network or define dr

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