Hi,
Any ideas, what "Next SPF run wait" actually means in the following output? It is a large negative value which is increasing by absolute value (will never reach zero).
It looks like it never runs SFP as the box doesn't install new routes. I see that it learns the LSAs but it never uses them as routes: show ip routes / show ip ospf routes don't show theses routes, while I see the corresponding LSAs in the OSPF DB. All the neighbor state machinery works well. But active routes are never updated even if an interfaces and a corresponding neighbor fail.
SSH@CER#show ip ospf
OSPF Version Version 2
Router Id 10.x.x.x
ASBR Status No
ABR Status No (0)
Redistribute Ext Routes from
Initial SPF schedule delay 0 (msecs)
Minimum hold time for SPFs 0 (msecs)
Maximum hold time for SPFs 0 (msecs)
Next SPF run wait (msecs) -177170950
External LSA Counter 0
External LSA Checksum Sum 00000000
Originate New LSA Counter 89
Rx New LSA Counter 3260
External LSA Limit 14447047
Database Overflow Interval 0
Database Overflow State : NOT OVERFLOWED
RFC 1583 Compatibility : Enabled
NSSA Translator: Enabled
Nonstop Routing: Disabled
Graceful Restart: Disabled, timer 120
Graceful Restart Helper: Enabled
BFD: Enabled
I checked other NetIron boxes (CERs and MLXes) but this line is just not present in the output.
We saw this behavior on another CERs, fixed this by a reboot. Unfortunately I don't have "show ip ospf" before the reboot from those boxes, now this line (Next SFP run wait) is just not present on the rebooted boxes.
Looks like a bug, but maybe I am missing something. Can't it be something like SPF throttling and maybe there is a way to clear this state less disruptively? On the other hand, "clear ip ospf all" did not help yesterday.
--
Kind regards,
Pavel
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