Converting From Nexus NX-OS Mode to ACI Mode.
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The document provides instructions for converting a Nexus switch from NX-OS mode to ACI mode to use the switch with the Cisco Application Centric Infrastructure (ACI). It describes checking the current software version, ensuring hardware compatibility, and upgrading the image. The key steps are to disable NX-OS mode, copy an ACI image file to the switch, boot from this image file to load ACI software, and reload the switch. Instructions are also given to revert back to NX-OS mode if needed.
![Converting from Nexus NX-OS mode to ACI mode
To use ACI in our network with the Nexus Switches we need to make sure that we are running
our switches in ACI mode. We can check which version we are running by using the show
version command:
BIOS:version 08.06
NXOS:version6.1(2)I3(3)
BIOScompile time:12/03/2016
NXOSimage file name is:bootflash:///n9000-dk9.6.1.2.I3.3.bin
NXOScompile time:12/05/2016 10:50:20 [12/05/2016 2:25]
We can tell that we are running an NX-OS mode switch as the image filename begins
with n9000. ACI image filenames begin with aci-n9000
The following instructions are for NX-OS release 6.1(2)l3(3) and later, and ACI image
version 11.0(2x) or later. There are slight differences with earlier releases, so it is best
to make sure you are on these releases before attempting the switch from NX-OS
mode to ACI mode.
Check whether your hardware is supported: look in the release notes for Cisco Nexus
9000 Series ACI-mode switches.
Remove or turn off any unsupported module (poweroff module <module> command).
If you do not do this step, the software will use a recovery/retry mechanism before
powering down the unsupported module, which can cause delays.](https://image.slidesharecdn.com/convertingfromnexusnx-osmodetoacimode-181104170742/85/Converting-From-Nexus-NX-OS-Mode-to-ACI-Mode-1-320.jpg)
![Reverting to NX-OS mode
If, for any reason, you need to revert to NX-OS mode from ACI mode, then follow
these steps:
1. Reload the switch:
admin@apic1:aci> reload
2. Access the bootloader:
Ctrl+]
loader>
3. Boot using the NX-OS image:
loader> boot nxos-image-name](https://image.slidesharecdn.com/convertingfromnexusnx-osmodetoacimode-181104170742/85/Converting-From-Nexus-NX-OS-Mode-to-ACI-Mode-5-320.jpg)
Converting From Nexus NX-OS Mode to ACI Mode.
- 1. Converting from Nexus NX-OS mode to ACI mode To use ACI in our network with the Nexus Switches we need to make sure that we are running our switches in ACI mode. We can check which version we are running by using the show version command: BIOS:version 08.06 NXOS:version6.1(2)I3(3) BIOScompile time:12/03/2016 NXOSimage file name is:bootflash:///n9000-dk9.6.1.2.I3.3.bin NXOScompile time:12/05/2016 10:50:20 [12/05/2016 2:25] We can tell that we are running an NX-OS mode switch as the image filename begins with n9000. ACI image filenames begin with aci-n9000 The following instructions are for NX-OS release 6.1(2)l3(3) and later, and ACI image version 11.0(2x) or later. There are slight differences with earlier releases, so it is best to make sure you are on these releases before attempting the switch from NX-OS mode to ACI mode. Check whether your hardware is supported: look in the release notes for Cisco Nexus 9000 Series ACI-mode switches. Remove or turn off any unsupported module (poweroff module <module> command). If you do not do this step, the software will use a recovery/retry mechanism before powering down the unsupported module, which can cause delays.
- 2. If you have a dual-supervisor system, then confirm that the standby supervisor module is in the ha-standby state using the show module command. Use it like this: show install all impact epld <epld-image-name>. This will check that the switch does not require any EPLD image upgrade. EPLD stands for electronic programmable logic device, and these enhance hardware functionality or resolve known issues. EPLD upgrades are quite infrequent, but they should not be overlooked. Uploading the ACI Image There are a number of ways of performing the upgrade. We can use SCP to copy the image from the APIC to the switch, upgrade from another SCP server, or copy it directly from a USB port. We will look at all three methods and are assuming that the Nexus switch has already been introduced into the network and has connectivity. Method 1 - Using SCP to copy the ACI image from the APIC 1. Enable SCP on the Nexus switch: switch(config)#featuresscp-server 2. Copy the image from the APIC server to the Nexus switch using the CLI: scp –r /firmware/fwrepos/fwrepo/<switch-image-name> admin@switch-ip-address:switch-image
- 3. Method 2 - Using SCP to copy the ACI image from another SCP server 1. Copy the file from the SCP server using the switch's command line: Switch# copy scp: bootflash: You will be prompted for the details of the SCP server and filenames. Method 3 - Using a USB drive to copy the ACI image We can copy an image from a USB drive to bootflash, using the dir command first so that we can cut and paste the filename in the copy command: Switch# dir usb1: (or dir usb2: depending on which USB slot you have plugged the drive into) Switch# copy usb1:<ACI-image-name> bootflash: If we have a dual-supervisor system, we have an additional step, which is to copy the ACI image to the standby supervisor module: Switch(config)# copy bootflash:aci-image bootflast://sup-standby/
- 4. Upgrading the image In the following code, we first turn off NX-OS mode. We then make sure that the first change survives a reboot. In the third line, we boot the supervisor modules using the ACI image specified. Lastly, we perform a reload of the switch. Switch(config)# no boot nxos Switch(config)# copy running-config startup-config Switch(config)# boot aci bootflash:aci-image-name Switch(config)# reload Logging In We log in using the username admin and the password specified during setup. Notice that the fabric discovery process has been started at this point. It may be some minutes before the services start and we are able to access the switch via the console. User Access Verification (none) login: admin ***************************************************************************** Fabric discovery in progress, show commands are not fully functional Logout and Login after discovery to continue to use show commands. ***************************************************************************** (none)#
- 5. Reverting to NX-OS mode If, for any reason, you need to revert to NX-OS mode from ACI mode, then follow these steps: 1. Reload the switch: admin@apic1:aci> reload 2. Access the bootloader: Ctrl+] loader> 3. Boot using the NX-OS image: loader> boot nxos-image-name