Turbocharge your Quanta LB6M - Flash To Brocade TurboIron - Big Update!

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Kaini Industries
Nov 20, 2016
do you have discord? If you give me a teamviewer session to remote control the console I can probably fix it

are you using the exact files and instructions from the guide, or supplying your own fastpath image?


New Member
Feb 28, 2019
do you have discord? If you give me a teamviewer session to remote control the console I can probably fix it

are you using the exact files and instructions from the guide, or supplying your own fastpath image?
Using the exact files and instructions from the guide. Discord TommyTomTom#7484


New Member
Jun 30, 2017
Has anyone had any luck setting a mtu on routed ports after enabling jumbo? I'm trying to get my ports to run at 8550 and not having any luck. About to flash back to fastpath and see if it can do it - I only need this & ospf to work.

TX24 Router#show run
Current configuration:
ver 07.4.00pT203
fan-speed 1
interface ethernet 1
 ip address
 ip-port-mtu 8550
TX24 Router#show int eth 1
10GigabitEthernet1 is up, line protocol is up
  Hardware is 10GigabitEthernet, address is 00e0.5200.0100 (bia 00e0.5200.0100)
  Configured speed 10Gbit, actual 10Gbit, configured duplex fdx, actual fdx
  Member of L2 VLAN ID 1, port is untagged, port state is FORWARDING
  BPDU guard is Disabled, ROOT protect is Disabled
  Link Error Dampening is Disabled
  STP configured to ON, priority is level0
  Flow Control is enabled
  Mirror disabled, Monitor disabled
  Not member of any active trunks
  Not member of any configured trunks
  No port name
  IPG XGMII 96 bits-time
  Internet address is, MTU 9216 bytes, encapsulation ethernet
  300 second input rate: 0 bits/sec, 0 packets/sec, 0.00% utilization
  300 second output rate: 0 bits/sec, 0 packets/sec, 0.00% utilization
  0 packets input, 0 bytes, 0 no buffer
  Received 0 broadcasts, 0 multicasts, 0 unicasts
  0 input errors, 0 CRC, 0 frame, 0 ignored
  0 runts, 0 giants
  0 packets output, 0 bytes, 0 underruns
  Transmitted 0 broadcasts, 0 multicasts, 0 unicasts
  0 output errors, 0 collisions
  Relay Agent Information option: Disabled


Kaini Industries
Nov 20, 2016
it looks like it's showing up as MTU 9216 so it's probably just inheriting the global jumbo command. it's been a while since I used fastiron 7.x but if it's the layer 3 firmware image you probably need to set the mtu for the virtual interface for that vlan, so if that port is in vlan 1, it would be

int ve 1
ip mtu 8550

I'd probably remove the ip-port mtu command

or something like that


New Member
May 3, 2016
And another one. Chopped a patch cable and soldered a DB9 which went into the serial port on an Xserve, used "serial 9600" in terminal and fired up the built-in TFTP server, followed the guide step-by-step and ended up with a boatload of new knowledge and a vastly more capable switch. Big bear hug for you fohdeesha, for sharing your work. Thank you!


Active Member
Apr 4, 2011
Need some help finding a command...
Was running as a flat L2 with an IP assigned to in band VLAN 1. I need to expand some other VLANs to this switch which required changes to VLAN 1 tagging so I changed the default-vlan-id to no longer be 1. Unfortunately the in band management IP followed the new default vlan. So I need to move the management IP back to VLAN 1 and can't seem to locate the command to remove the management IP from the default vlan so I can add it to VLAN 1.

Another explanation, default VLAN is 5000 with in band management IP Need to delete management IP and reassign to VLAN 1.


New Member
Apr 18, 2016
For anyone doing the upgrade.
I upgrade mine a few month ago and film the video.
Make sure to use your IP in your network.
Sorry for bad quality...
  • Like
Reactions: kiteboarder


New Member
Apr 30, 2018

Have anyone experienced issues with static routes in v7 on these? Works quite a lot better than the v8 I must say, but we've seen some strange errors.

A static route can suddenly just stop responding to ping. To get it going again we need to run:
no ip route xx.xx.xx.xx xx.xx.xx.xx
ip route xx.xx.xx.xx xx.xx.xx.xx

Basically readding it. Takes 2 seconds and it's available again..

Javier Forero

New Member
Nov 6, 2019
You can help me with the firmware recovery of 2 quanta lb4m and l6bm switches?

I need recovery with urgency

God bless you

I have this problem

Boot Menu Version: 28 Apr 2008

Calculating CRC of active image...

Active image failed crc check. Activating backup image
No Backup Image available.
Failed to activate Backup Image.
Operational code CRC is invalid.
Options available
1 - Start operational code
2 - Change baud rate
3 - Retrieve event log using XMODEM
4 - Load new operational code using XMODEM
5 - Load configuration using XMODEM
6 - Display operational code vital product data
7 - Update boot code
8 - Delete operational code
9 - Reset the system
10 - Restore configuration to factory defaults (delete config files)
11 - Activate Backup Image
12 - Run Diagnostics Image
13 - Load new Diagnostics Image using XMODEM
[Boot Menu] 11
[Boot Menu]
[Boot Menu] 11
No Backup Image available.
Failed to activate Backup Image.
[Boot Menu]
[Boot Menu] 1
ERROR: Operational code CRC is not valid, you must load new code.

and the l6bm switch show me this message

Select option (1-13 or Q): 1
code file image1 not present.
booting image2
insmod: cannot insert `/lib/modules/eeprom.ko': File exists (-1): File exists
Extracting application from .stk file...error: cannot open input file /mnt/fastpath/image2
FASTPATH not executed!
Press <ENTER> to continue...

FASTPATH Startup Rev: 6.2

FASTPATH Startup -- Utility Menu

1 - Start FASTPATH Application
2 - Load Code Update Package
3 - Load Configuration
4 - Select Serial Speed
5 - Retrieve Error Log
6 - Erase Current Configuration
7 - Erase Permanent Storage
8 - Select Boot Method
9 - Activate Backup Image
10 - Start Diagnostic Application
11 - Run Manufacturing Diagnostics
12 - Delete Manufacturing Diagnostics
13 - Reboot

UPDATE 7/11/2018 - It's been discovered that the version 8 Brocade firmware originally on the site was an internal-use only, untested beta version. It has been removed from the guide and replaced with the latest v7 mainstream release which is rock stable, well tested and has had a few more months of fixes added. Please revert to v7 ASAP if you are still running v8! Instructions are on the site.

UPDATE 2/26/18 - we've figured out a lot of new things since this thread was made (the need to set the MAC address, changing fan speeds, the management port oddness, etc). If you've already flashed your switch, it's worth taking a look at the guide website again. See this post for more info - https://forums.servethehome.com/ind...o-brocade-turboiron.17971/page-12#post-182744

I'm sure you've seen attempts to try and get alternative OS's on the LB6M due to how crippled the included Fastpath build is - and after a lot of exploring bootloaders, @verygeeky and myself were finally able to cleanly flash the LB6M over to a Brocade TurboIron 24x. They're identical hardware, a flash procedure for the bootloader just needed to be figured out.

Some new features you get compared to Fastpath, definitely not an exhaustive list though:

  • 1gbE SFP support (including rj45 copper SFP's)
  • Much quieter fans with the "fan-speed 1" command
  • BGP
  • Properly working STP/RSTP/MSTP
  • QoS, traffic shaping/limiting/ACL etc
  • Q-in-Q tagging
  • Saner syntax (especially the config of VLANs and routing)
  • Many new multicast features
  • SFlow with a config that doesn't disappear on reboot
  • Larger and better supported SNMP MIB
  • Deeper and more configurable syslog features
  • More than 2000 pages of applicable documentation included

*This does not add IPv6 routing*

The guide is available here - Flashing LB6M To Brocade - FBOM

The markdown source is on our github at this link, if you have any suggestions to make the guide easier to follow, submit a PR - GitHub - Fohdeesha/quanta-brocade: Flashing brocade firmware to Quanta LB6M

Number of flashed chassis is now over 100+ - quite low risk if you can copy/paste.

I'd like to thank @verygeeky for all his help and being the brave first person to hit "reset" after completely replacing his bootloader, not sure if his switch would ever boot again. I'd also like to thank @fvanlint for being the first STH member to get with us on discord and help us develop the guide, and be the first to follow it.

MD5 hash of brocade firmware zip 07/11/18 : 68aa7643a121c19fa4b8c84d7f6f2843