本文为Nexus 3048交换机用户提供了升级到最新NX-OS版本的详细步骤。Nexus 3048是一款经济实用的千兆交换机，适用于管理网络。文章指导用户通过USB将所需软件更新复制到bootflash，并逐步执行升级过程，包括升级到NX-OS 5.0(3)U5、6.0(2)U6(2a)、6.0(2)U6(10)以及最终升级到NX-OS 7.0。此外，文章还提供了清理旧版本的建议，以确保升级顺利进行。

💡 **准备工作**：首先，需要准备好升级所需的NX-OS版本镜像文件，并将其放置在USB存储设备中。推荐使用USB进行文件传输，因为这种方式通常是最快且最便捷的。

🔄 **升级步骤**：升级过程需要分几个阶段进行。如果交换机当前版本低于5.0，需要先升级到NX-OS 5.0(3)U5。然后，依次升级到6.0(2)U6(2a)和6.0(2)U6(10)。

💾 **文件复制**：在每个升级阶段，都需要将对应的kickstart和system镜像文件从USB复制到bootflash。例如，升级到NX-OS 5.0(3)U5时，需要复制n3000-uk9-kickstart.5.0.3.U5.1j.bin和n3000-uk9.5.0.3.U5.1j.bin文件。

✅ **执行升级**：使用`install all system`命令执行升级。升级过程中，系统会提示是否继续中断升级，需要确认继续。升级完成后，交换机会重启并进入登录界面。

🗑️ **清理旧版本**：为了确保有足够的存储空间，建议在每次升级后清理旧版本的镜像文件。例如，在升级到NX-OS 6.0版本后，可以使用`del n3000-uk9.5* no-prompt`命令删除旧版本的5.x镜像文件。

Yeah, I know. I’m supposed to be a Wi-Fi guy. However, I sometimes still have to touch routers and switches. I have some help for you if you need to upgrade some old Nexus switches. The Nexus 3048s are great DC caliber gig switches with proper front-to-back airflow. Used ones are really cheap and I think they make great management switches, which is what I’m using them for. If you have a Cisco Nexus 3048 with an older release of NX-OS on it, you need to go through several upgrades to get it to NX-OS v7. Here’s a walkthrough on the procedures. If you find you already on v6, for example, you can skip the 5.x step.

Upon initial boot, you will need to abort Power-On Auto Provisioning. You will then be prompted for the admin password. Skip the basic configuration dialog. After a few moments, you will be able to login with the admin credentials you set during boot.

I suggest downloading all the required code and placing it on a USB. I’ve found this to be the fastest and least painful method.

Copy the needed software updates from USB to bootflash:

copy usb1:///n3000-uk9-kickstart.5.0.3.U5.1j.bin bootflash:copy usb1:///n3000-uk9.5.0.3.U5.1j.bin bootflash:copy usb1:///n3000-uk9.6.0.2.U6.2a.bin bootflash:copy usb1:///n3000-uk9-kickstart.6.0.2.U6.2a.bin bootflash:copy usb1:///n3000-uk9.6.0.2.U6.10.bin bootflash:copy usb1:///n3000-uk9-kickstart.6.0.2.U6.10.bin bootflash:# Probably not be enough space, this will probably need to be done# later, but you can try it...copy usb1:///nxos.7.0.3.I4.8.bin bootflash:

Upgrade to NXOS 5.0(3)U5 (req’d to upgrade to NXOS 6)

install all system bootflash:///n3000-uk9.5.0.3.U5.1j.bin kickstart bootflash:///n3000-uk9-kickstart.5.0.3.U5.1j.bin

The upgrade takes several minutes while it verifies and extracts the update. It will then come up with a warning that ISSU isn’t available and ask if you want to continue with the disruptive upgrade. Say yes and eventually the switch will reboot and return to the login prompt.

Cleanup to make sure there’s enough room for upgrades to run.

del n3000-uk9.5* no-prompt

Now we get to run through the upgrade procedure several times.

Upgrade to NXOS 6.0(2)U6(2a)

install all system bootflash:///n3000-uk9.6.0.2.U6.2a.bin kickstart bootflash:///n3000-uk9-kickstart.6.0.2.U6.2a.bin

Upgrade to NXOS 6.0(2)U6(10)

install all system bootflash:///n3000-uk9.6.0.2.U6.10.bin kickstart bootflash:///n3000-uk9-kickstart.6.0.2.U6.10.bin

Install NXOS 7.0

#If you were able to copy the NX-OS v7 image earlier, skip this copy.copy usb1:///nxos.7.0.3.I4.8.bin bootflash:install all nxos bootflash:nxos.7.0.3.I4.8.bin

Clean up old versions

del n3000* no-prompt

FIN

The post Upgrading an Old Nexus 3048 to Current NX-OS appeared first on Mostly Networks.