Mellanox Infiniband HCA and/or Ethernet adapters

Adj — Mon, 13 Apr 2026 21:35:30 GMT

Set card mode

Mellanox Infiniband HCA and/or Ethernet adapters

Adj — Mon, 13 Apr 2026 03:15:41 GMT

Created page with "I have a number of servers with ConnectX-3 cards to connect to various network infrastructure bits and bobs. Recently (today) installed on in a Cisco UCS C220 M5 server and realized that I have made no notes about things that have been done to make the cards work. Ooops. == ConnectX-3 cards == === Finding card info === === Where to get firmware images === === Burning new firmwares === === Set card mode ==="

New page

I have a number of servers with ConnectX-3 cards to connect to various network infrastructure bits and bobs. Recently (today) installed on in a Cisco UCS C220 M5 server and realized that I have made no notes about things that have been done to make the cards work. Ooops.

== ConnectX-3 cards ==

=== Finding card info ===
=== Where to get firmware images ===
=== Burning new firmwares ===
=== Set card mode ===

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Adj — Mon, 13 Apr 2026 03:04:28 GMT

FnordNet infrastructure

← Older revision		Revision as of 03:04, 13 April 2026
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	* [[ In transit data security ]] using EFF's Let's Encrypt, x509 certificates, and TLS		* [[ In transit data security ]] using EFF's Let's Encrypt, x509 certificates, and TLS
	* [[ Cisco things ]]		* [[ Cisco things ]]
			* [[ Mellanox Infiniband HCA and/or Ethernet adapters ]]

	== VOIP stuff ==		== VOIP stuff ==

Mellanox SX6036

Adj — Sun, 12 Apr 2026 18:06:14 GMT

Unlocking the bootloader

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OpenWRT Aruba AP-303

Adj — Fri, 10 Apr 2026 19:44:13 GMT

← Older revision		Revision as of 19:44, 10 April 2026
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	And the package manager, <code>opkg</code>, has been replaced by a tool called <code>apk</code>. This seems to have nothing to do with Android's APK package files, though. An administrator's <code>apk</code> cheatsheet can be found at https://openwrt.org/docs/guide-user/additional-software/opkg-to-apk-cheatsheet.		And the package manager, <code>opkg</code>, has been replaced by a tool called <code>apk</code>. This seems to have nothing to do with Android's APK package files, though. An administrator's <code>apk</code> cheatsheet can be found at https://openwrt.org/docs/guide-user/additional-software/opkg-to-apk-cheatsheet.
	So far, it is a bit more like Debian's <code>apt-get</code> tool. Getting all outstanding package updates is simply <code>apk update; apk upgrade</code> now.		So far, it is a bit more like Debian's <code>apt-get</code> tool. Getting all outstanding package updates is simply <code>apk update; apk upgrade</code> now.

			=== Packages we want on our OpenWrt 25.12.x APs ===
			* diffutils -- GNU text file delta generator, useful for comparing two versions of a config file
			* usteer -- this steers WiFi clients toward the best frequency band and AP depending on signal strength, number of stations connected, and other factors.

			=== And some basic system setup ===
			OpenWrt has most (all?) of its config files stored under /etc/config. There is a CLI tool, <code>uci</code>, to manage them. Let's walk through setting up a new AP's hostname, and getting a juicy kernel random seed value set:
			root@OpenWrt:~# '''uci show system'''
			system.@system[0]=system
			system.@system[0].hostname='OpenWrt'
			system.@system[0].timezone='GMT0'
			system.@system[0].zonename='UTC'
			system.@system[0].ttylogin='0'
			system.@system[0].log_size='128'
			system.@system[0].urandom_seed='0'
			system.@system[0].compat_version='1.1'
			system.ntp=timeserver
			system.ntp.enabled='1'
			system.ntp.enable_server='0'
			system.ntp.server='0.openwrt.pool.ntp.org' '1.openwrt.pool.ntp.org' '2.openwrt.pool.ntp.org' '3.openwrt.pool.ntp.org'
			root@OpenWrt:~# '''uci set system.@system[0].hostname=fnord-ap303-4'''
			root@OpenWrt:~# '''uci commit system'''
			root@OpenWrt:~# '''/etc/init.d/system reload'''
			root@fnord-ap303-4:~# '''uci set system.@system[0].urandom_seed=$(wget -q -O - 'https://www.random.org/cgi-bin/randbyte?nbytes=32&format=h' \| tr -d ' ' \| tr -d '\n')'''
			root@fnord-ap303-4:~# '''uci commit system'''
			root@fnord-ap303-4:~# '''/etc/init.d/system reload'''
			root@fnord-ap303-4:~#
			<code>paste</code> might be the better standard UNIX tool for the <code>tr -d '\n'</code> in the above. But many of the things we might expect from GNU coreutils are not installed by default on OpenWrt. So we have <code>tr</code> remove spaces from the output from random.org's super awesome random bits delivery service and then have it remove the newlines, too. End result is the same.

			=== Wired network config ===
			Feed this block of text to <code>uci import network</code> and finish things off with an ASCII end-of-transmission marker (<code>Ctrl-D</code>) or whatever your termios end-of-file (EOF) character is.
			package network

			config interface 'loopback'
			option device 'lo'
			option proto 'static'
			option ipaddr '127.0.0.1'
			option netmask '255.0.0.0'

			config globals 'globals'
			option ula_prefix 'fd1f:ed39:f7d::/48'
			option packet_steering '1'

			config device
			option name 'br-lan'
			option type 'bridge'
			list ports 'lan'

			config interface 'lan'
			option device 'br-lan.10'
			option proto 'dhcp'

			config device
			option type '8021q'
			option ifname 'br-lan'
			option vid '1001'
			option name 'br-lan.1001'

			config device
			option type '8021q'
			option ifname 'br-lan'
			option vid '3900'
			option name 'br-lan.3900'

			config interface 'lan_1001'
			option device 'br-lan.1001'

			config interface 'lan_3900'
			option device 'br-lan.3900'

			config bridge-vlan
			option device 'br-lan'
			list ports 'lan:u*'
			option vlan '10'

			config bridge-vlan
			option device 'br-lan'
			option vlan '1001'
			list ports 'lan:t'

			config bridge-vlan
			option device 'br-lan'
			option vlan '3900'
			list ports 'lan:t'
			This was pieced together experimentally over time. Not guided by the reference documentation. Mostly with the LuCI web UI. The <code>ula_prefix</code> global option value probably does not matter for anything I'm doing here.

			=== Wireless network config ===
			This is like the wired networking config previously. Except it has SSID security passwords in it. So I am not sharing the actual contents here. Essentially, though, feed a config to <code>uci import wireless; uci commit wireless; sync; sleep 3; sync; reboot</code> and things should work out OK.

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Mellanox Infiniband HCA and/or Ethernet adapters

Mellanox Infiniband HCA and/or Ethernet adapters

Main Page

Mellanox SX6036

OpenWRT Aruba AP-303