Unable to remove network statements in OSPF configuration on Nexus switch

[Sergey Lisitsin]

Good afternoon,

We've got a Nexus 3k switch running OSPF. In the OSPF config section we've got a bunch of network x.x.x.x/yy statements, which we can't delete. We also can't add any new entries, however we can configure the interfaces for OSPF process. Can anyone suggest a way to add/delete network statements.

Nexus code version is 

Software
BIOS: version 3.5.0
NXOS: version 7.0(3)I2(2b)
BIOS compile time: 01/25/2016
NXOS image file is: bootflash:///nxos.7.0.3.I2.2b.bin

Cheers,

Sergey.

[marce1000]

 - Can you provide examples ?

 M.

[Sergey Lisitsin]

marce1000,

Sure,

version 7.0(3)I2(2b)
feature ospf

router ospf 1
router-id 192.168.10.253
network 10.10.9.33/32 area 0.0.0.1
network 10.10.9.34/32 area 0.0.0.1
network 10.10.9.49/32 area 0.0.0.1
network 172.20.10.252/32 area 0.0.0.1
network 172.31.10.252/32 area 0.0.0.1
network 192.168.10.252/32 area 0.0.0.1
network 192.168.255.2/32 area 0.0.0.1
network 192.168.255.6/32 area 0.0.0.1
default-information originate
redistribute static route-map rm.static-to-ospf
log-adjacency-changes

XXX-3172T-02# conf t
Enter configuration commands, one per line. End with CNTL/Z.
XXX-3172T-02(config)# router ospf 1
XXX-3172T-02(config-router)# no net?
^
% Invalid command at '^' marker.
XXX-3172T-02(config-router)# no net?
^
% Invalid command at '^' marker.
XXX-3172T-02(config-router)# no net

[Sergey Lisitsin]

OK guys,

It looks like a bug in NXOS. The network command is not shown in the list of available commands, but it is accepted when fully typed in. Strange thing. I have labbed it up in GNS3 and got the desired result. 

Thanks to everyone looking at this issue.

[balaji.bandi]

Can you post the output while removing from router ospf process no network x.x.x.x/yy

[Georg Pauwen]

Hello,

check if you have OSPFv3 enabled (which doesn't use network statements under the OSPF process). 

Try and enable OSPFv2:

N3K#conf t

N3K(config)#feature ospf

and check if you can remove the network statements...