Nexus 9000: Default an Interface from Enable Mode
Considering the 9000v is really only for labbing this isn’t a huge deal, but I was able but to default an interface from enable mode; config mode is not required. I don’t know if this is something I’d neccessarily consider a bug, but its something I’ll definitely keep in mind when working with these images.
I tried this on a production Nexus 9372 running code 7.0.3.I2.4 and this wasn’t possible, however /u/NetSysAdmin on reddit stated he was able to do this on Nexus 9508s running 7.0.3.I6.1 and 7.0.3.I7.1. The consensus in the reddit thread is that this isn’t a huge concern, especially considering that the configuration can be modified from enable mode via commands such as
write erase or
copy start run.
I found it interesting because I’ve never encountered another Cisco platform (NX-OS, IOS, or otherwise) that allows an interface configuration to be defaulted without first being in config mode.
BugID provided by TAC: https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvg91620
This has been confirmed by the BU (via TAC) to be unexpected behavior and a BugID will be generated.
NX-OSv 9000 image version 7.0.3.I7.1
Configuring an interface as a trunk and adding a description, exiting config mode.
NX-OSv9K# conf t Enter configuration commands, one per line. End with CNTL/Z. NX-OSv9K(config)# int e1/10 NX-OSv9K(config-if)# description TEST-DEFAULT NX-OSv9K(config-if)# switchport mode trunk NX-OSv9K(config-if)# end NX-OSv9K#
Validating interface configuration.
NX-OSv9K# show run int e1/10 !Command: show running-config interface Ethernet1/10 !Time: Wed Nov 8 19:08:24 2017 version 7.0(3)I7(1) interface Ethernet1/10 description TEST-DEFAULT switchport mode trunk
Defaulting the interface from enable mode and validating.
NX-OSv9K# default int e1/10 NX-OSv9K# NX-OSv9K# show run int e1/10 !Command: show running-config interface Ethernet1/10 !Time: Wed Nov 8 19:08:36 2017 version 7.0(3)I7(1) interface Ethernet1/10 NX-OSv9K#