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Mellanox Spectrum SN2000 Series
The Mellanox Spectrum SN2000 Series Switches are Managed Ethernet Switches with a maximum speed of 100Gb/s and up to 56 ports.
They use the switchdev API to offload the kernel's forwarding plane to its ASICs, allowing for more network throughput.
More info: https://github.com/Mellanox/mlxsw/wiki
Supported Versions
| Brand | Model | Version | Current Release | OEM Info | Forum Search | Technical Data |
|---|---|---|---|---|---|---|
| Mellanox | Spectrum SN2100 | snapshot | https://network.nvidia.com/sites/default/files/doc-2020/pb-sn2100.pdf | Spectrum SN2100 | View/Edit data | |
| Mellanox | Spectrum SN2700 | snapshot | https://network.nvidia.com/files/doc-2020/pb-sn2700.pdf | Spectrum SN2700 | View/Edit data |
Hardware Highlights
| Model | Version | SoC | CPU MHz | CPU Cores | Flash MB | RAM MB | WLAN Hardware | WLAN2.4 | WLAN5.0 | 100M ports | Gbit ports | Modem | USB |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Spectrum SN2100 | Intel Atom C2558 | 2400 | 4 | more than 8GB NAND | more than 4GB | 1x 2.0 | |||||||
| Spectrum SN2700 | Intel Celeron 1047UE | 1400 | 2 | more than 8GB NAND | more than 4GB | 1x 2.0 |
Installation
This will erase the complete disk and flash OpenWrt, removing existing operating systems, including the commonly pre-installed ONIE or Onyx.
Flashing the image is done as you do it with any other x86 target: https://openwrt.org/docs/guide-user/installation/openwrt_x86#installation
The instructions on this page will show you how to install OpenWrt on the switch by flashing it from a USB device. You have to connect the host PC to the serial port of the network switch to navigate through the BIOS and the installation steps. The parameters of the serial connection can be found here.
The USB device will serve as a kind of Live USB. If you already have a Live USB from another Linux distribution, you can also use that and skip this step.
First, plug the USB device into your PC, identify your USB device (e.g., by running fdisk -l; the instructions here will use /dev/sdx), and flash the image to it.
This will erase all your data on the USB device.
gunzip openwrt-x86-64-generic-ext4-combined.img.gz # Replace sdx with your device sudo dd if=openwrt-x86-64-generic-ext4-combined.img of=/dev/sdx bs=1M
Since the OpenWrt root partition size is only 104MB by default, we must enlarge it and its filesystem. Some Linux distributions automatically mount the root partition, so you may have to unmount it before.
sudo parted -s /dev/sdx resizepart 2 100% sudo resize2fs -f /dev/sdx2
After that, you can mount the root partition and copy the OpenWrt to the home directory of the user root.
sudo mkdir /mnt/usb sudo mount /dev/sdx2 /mnt/usb/ cp openwrt-x86-64-generic-ext4-combined.img /mnt/usb/root/ sudo umount /dev/sdx2 sudo rmdir /mnt/usb
Next, (safely) unplug the USB device, plug it into the Mellanox switch, and connect your PC to its serial port.
To enter the BIOS, reboot the switch and press CTRL+B while you see the BIOS information text (American Megatrends …).
The default password to enter the BIOS is admin.
To boot from the USB device, switch to the Save & Exit tab and select your USB device from the Boot Override options.
When booted, you can press Enter on your keyboard to activate the console and start flashing the image.
cd ~ dd if=openwrt-x86-64-mellanox_spectrum-sn2100-ext4-combined.img of=/dev/sda bs=1M
Finally, if the flashing process was successful, reboot, and the switch should boot into the newly installed OpenWrt system.
As mentioned before, the root partition size is only 104 MB. To increase it and the filesystem, please follow the steps of the following link: https://openwrt.org/docs/guide-user/installation/openwrt_x86#expanding_root_partition_and_filesystem.
Upgrading OpenWrt
LuCI Web Upgrade Process
- Browse to
http://192.168.1.1/cgi-bin/luci/mini/system/upgrade/LuCI Upgrade URL - Upload image file for sysupgrade to LuCI
- Wait for reboot
Terminal Upgrade Process
Note: It is important that you put the firmware image into the ramdisk (/tmp) before you start flashing.
sysupgrade
- Login as root via SSH on 192.168.1.1, then enter the following commands:
cd /tmp wget https://downloads.openwrt.org/snapshots/targets/x86/64/openwrt-x86-64-generic-ext4-combined.img.gz sysupgrade /tmp/openwrt-x86-64-generic-ext4-combined.img.gz
Basic configuration
Network interfaces
The default network configuration is:
| Interface Name | Description | Default configuration |
|---|---|---|
| br-lan | All QSFP Ports | 192.168.1.1/24 |
| eth0 | Management Port | None |
| lo | Loopback | 127.0.0.1 |
Buttons
The Mellanox Spectrum SN2000 Series has the following buttons:
| BUTTON | Event |
|---|---|
| Reset | reset |
Hardware
Info
---- datatemplatelist dttpllist ---- template: meta:template_datatemplatelist cols : Brand, Model, Versions, Device Type, Availability, Supported Since Commit_git, Supported since Rel, Supported current Rel, Unsupported, Bootloader, CPU, Target, CPU MHz, Flash MBs, RAM MB, Switch, Ethernet 100M ports_, Ethernet Gbit ports_, Comments network ports_, Modem, VLAN, WLAN 2.4GHz, WLAN 5.0GHz, WLAN Hardwares, WLAN Comments_, Detachable Antennas_, USB ports_, SATA ports_, Comments USB SATA ports_, Serial, JTAG, LED count, Button count, Power supply, Device Techdata_pageid, Forum topic URL_url, wikidevi URL_url, OEM Device Homepage URL_url, Firmware OEM Stock URL_url, Firmware OpenWrt Install URL_url, Firmware OpenWrt Upgrade URL_url, Comments_ filter : Brand=Mellanox filter : Model~Spectrum SN2*
Photos
Front:
Insert photo of front of the casing
Back:
Insert photo of back of the casing
Backside label:
Insert photo of backside label
Opening the case
Note: This will void your warranty!
Describe what needs to be done to open the device, e.g. remove rubber feet, adhesive labels, screws, ...
- To remove the cover and open the device, do a/b/c
Main PCB:
Insert photo of PCB
Serial
How to connect to the Serial Port of this specific device:
Insert photo of PCB with markings for serial port
Serial connection parameters for Mellanox Spectrum SN2000 Series:
| Parameter | Setting |
|---|---|
| Baud rate | 115200 |
| Data bits | 8 |
| Stop bits | 1 |
| Parity | None |
| Flow control | None |
Bootlogs
OEM bootlog
COPY HERE THE BOOTLOG WITH THE ORIGINAL FIRMWARE
OpenWrt bootlog
COPY HERE THE BOOTLOG ONCE OPENWRT IS INSTALLED AND RUNNING
Notes
Space for additional notes, links to forum threads or other resources.
- ...
