4.3 KiB
Hidden Brocade Dev Stuff
This is a collection of hidden tools, modes, and commands buried inside Brocade FastIron products.
Hidden Commands
All Fastiron platforms have hidden CLI commands, with the biggest one being dm. The dm command is available (but hidden) for diagnostic use. Type dm and hit tab to see available options, like the below for example:
FCX3(config)#dm
HEX Number
802-1w show 802-1w internal information
aaa-acct-session
acl_tcam command for tcam manager
aging-loop Turn off/on system aging loop
allled Toggle -On/Off All LED
alt-diag Test only, off/on
app_vlan_debug App VLAN table (shadow)
auq-resync Sync Auq for a device
auq-status show auq status
badaddr Test only, will reboot
blink Show gig link changes due to PHY blink
buffer DMA CPU buffer related
cancel-flash-timeout set flash timeout to default
clear_boot_count Clear crash dump
cpld-reg-dump Dump the CPLD register
There's hundreds of other options. These are low level debug commands, so if you don't know what they do you can easily break your switch.
Note: There's around ~700 commands that are completely hidden, they will not even show up using tab autocomplete like the above dm commands do. Click here for a full list of these commands. Many of these might delete your config, your licenses, lock the switch up, etc.
Hidden OS Console
This only works over a serial connection. It will not work over telnet/ssh/etc. Connect to a FastIron device over serial, and once it's fully booted and running, press ctrl+y, let go, then press m. Then hit enter. It should drop you down to the OS console:
OS>
Note: This is mainly for the PowerPC architecture switches (FCX, ICX6610). The ARM switches (ICX6450, ICX7xxx) still have this hidden console available, but it only has ~5 commands. For a proper low level CLI on ARM switches, use the Accessing Linux section.
Press the question mark on your keyboard for a list of all available options:
OS>
clear Clear internal table
console Attach console to a process
copy Copy file
daw Set data address watchpoint
dbg Toggle debug mode
dq Display memory in 64-bit quad word
dd Display memory in 32-bit double word
del Delete flash file
dir List flash files
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You'll note the options are nearly identical to what's available in the bootloader, except while the switch is fully booted and running. There's a couple extra options here too that aren't available in just the bootloader. To exit this mode, just hit ctrl+z.
Hidden Bootloader Modes
All the newer switches that run linux (ICX6450, ICX6650, ICX7xxx) use u-boot as the bootloader. However it runs in a very locked down mode with only a few commands available. Thankfully after contacting Arris (who own Ruckus, who now owns Brocade), they published their u-boot source code.
From analyzing their u-boot source, we are able to find some hidden environment variables that will force the switch to boot into fully unlocked u-boot. To do so, run the following in the bootloader:
ICX6430 & ICX6450
setenv pp_init_enable 1
setenv diag_cmd_on 1
saveenv
reset
## it will reboot into fully unlocked u-boot
## set it back to normal
setenv pp_init_enable
setenv diag_cmd_on
saveenv
reset
ICX6650 & ICX7250 & ICX7450
setenv diag_mode_enable 1
saveenv
reset
## it will reboot into fully unlocked u-boot
## set it back to normal
setenv diag_mode_enable
saveenv
reset
ICX7650
setenv diag_mode_on 1
saveenv
reset
## it will reboot into fully unlocked u-boot
## set it back to normal
setenv diag_mode_on
saveenv
reset
ICX7150, ICX7750, ICX7850
Unknown, but most likely one of the three above. If you try all three, make sure to undo each one (follow the back to normal bit) before moving onto the next attempt.