Tracking down MACs from a switch can be very beneficial. You can use the information from the MAC table to track down where a device is plugged into, or if there is some kind of loop in the network.
This command is used from the Fortigate to drill down to the Fortiswitch. I do believe it would also work directly from the Fortiswitch.
To display the whole MAC table:
diagnose switch-controller switch-info mac-table
Lets say I need to look for the last 4 of the MAC to find exactly where this device plugs into.
I have been working a lot with the Dell N-series over last few years, and now the N2248-ON which can run OS10 as well as the default OS6. We upgraded firmware to the latest 6.6.3.10 and all seemed to go well. Somehow it did not and hosed both primary/secondary firmware. The device was boot looping – the only option was to drop into ONIE Recovery and re-install the firmware. Here are the steps I used:
The ONIE recovery area runs a version of Linux. First check out your NIC to make sure it finds it:
Great! Eth0 is found, but of course link status is down. Eth0 is the out of band management interface. We should be able to set an IP address on the interface and install firmware VIA TFTP or USB.
First I will setup and IP that can communicate with my laptop :
Perfect! My laptop is 192.168.1.99 – and connected directly to the out of band MGMT port.
Next we will TFTP the file up. This file is located in the software archive you download from Dell – Its located in the “Otherfiles” folder. In this case the file name is onie-installer-x86_64-dellemc_n22xx_6.6.3.10. Next I put this on my TFTP server and we can start the install.
First lets turn off the ONIE-Discovery attempts with the onie-stop command.
The onie-nos-install will install the OS back to the device. The firmware took a few minutes to install, with about 4 reboots I think – it was all automatic.
Now lets see if the switch was updated with the “show version” command.
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