OSPF Down when remove subinterface

why do you have 3 subifs on the same vlan?

Did you try disabeling 0/0.100 and re enabling?

Of course its mistake I have:

Gigabit Ethrnet 0/0.100 (dotq1 vlan100) with ospf Gigabit Ethrnet 0/0.101 (dotq1 vlan101) with ospf Gigabit Ethrnet 0/0.102 (dotq1 vlan102) with ospf Gigabit Ethrnet 0/0.103 (dotq1 vlan103) without ospf Gigabit Ethrnet 0/0.104 (dotq1 vlan104) without ospf

can you show ip ospf and output it here?

Have you tried shutting down GE 0/0 all together and reloading?

ASXXXX-D# ASXXXX-D#show ip osp ASXXXX-D#show ip ospf Routing Process "ospf 7" with ID x.x.x.x Supports only single TOS(TOS0) routes Supports opaque LSA Supports Link-local Signaling (LLS) It is an autonomous system boundary router Redistributing External Routes from, connected, includes subnets in redistribution static, includes subnets in redistribution Initial SPF schedule delay 5000 msecs Minimum hold time between two consecutive SPFs 10000 msecs Maximum wait time between two consecutive SPFs 10000 msecs Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs LSA group pacing timer 240 secs Interface flood pacing timer 33 msecs Retransmission pacing timer 66 msecs Number of external LSA 303. Checksum Sum 0x91ADB3 Number of opaque AS LSA 0. Checksum Sum 0x000000 Number of DCbitless external and opaque AS LSA 0 Number of DoNotAge external and opaque AS LSA 0 Number of areas in this router is 1. 1 normal 0 stub 0 nssa External flood list length 0 Area BACKBONE(0) Number of interfaces in this area is 23 (1 loopback) Area has message digest authentication SPF algorithm last executed 03:21:36.660 ago SPF algorithm executed 5 times Area ranges are Number of LSA 20. Checksum Sum 0x09DED9 Number of opaque link LSA 0. Checksum Sum 0x000000 Number of DCbitless LSA 0 Number of indication LSA 0 Number of DoNotAge LSA 0 Flood list length 0

No because I was logged on one of subinterfaces and I could shut off from router.

Check to see if VLAN100 has come down. Due to a VTP problem, if your running VTP

Sh ip int brie

also make sure the network that VLAN100 is in, is still assigned in OSPF.

Also theres no harm now in going ahead and removing .104

Sorry its hard to troubleshoot with no knowledge of topology and other settings.

Sh run would be helpful but I understand not wanting to share company sensetive information

Show ip ospf interfaces w ould also help

If you figure this out post what the issue was! OTher wise ill keep working with ya

I upgrade software and I don't see this problem for now

peter