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Write password protected SFP & QSFP transceivers with REVELPROG-IS programmer
Рет қаралды 17,157
4 жыл бұрынExample of programming write protected SFP transceiver module using search password tool (brute-force method) and REVELPROG-IS programmer with SFP QSFP XFP Adapter.
REVELPROG-IS programmer:
www.reveltroni...
SFP QSFP XFP Adapter:
www.reveltroni...
Memory organization in SFP, QSFP and XFP transceivers (forum tutorial):
forum.reveltro...
Writing protected SFP / QSFP / XFP and searching password (brute force method) tutorial on forum:
forum.reveltro...
@viktorportnykh 3 жыл бұрын
Don't mislead people. Effective clocking speed is below 20 kHz for most optical transceivers, because they based on EEPROM family such as 24C02, or have MCU with software slave I2C controller which unsupport high speed rate of write operations through the databus. You will get NACK or write will be failed if the speed rate will be so high as specified on datasheets: up to 400 kHz. That means you can't search password with speed of thouthands new values per seconds. To get result you have to write a new password, then do write changes in value of minimal sequense size, then read a code for compare to be sure the write with new password is completed succesufully. That cuts speedrate up to tens values per second.
@REVELTRONICS 3 жыл бұрын
It's true only for old type SFPs, but nowadays most transceivers are MCU based and are much faster. They do not have EEPROM, they have FLASH or FRAM which are only emulating EEPROM on I2C bus. In REVELPROG-IS there is implemented smart alghoritm (in tricky way) to increase search password speed routine - it can be tens of times faster than standard routine "write new password -> make changes -> check effects". Anyway, you are right that transceiver hardware limits are pain in the ass, but in smart way using FLASH/FRAM tricks it's possible to get thousands passwords per seconds.
@nihatkosova8436 5 ай бұрын
hi, can we make compatible to any vendor with this programmer ? like Cisco compatible to Huıawei compatible ? is this possible ? best wishes
@REVELTRONICS 5 ай бұрын
Yes you can. But to make it Cisco compatible you wiill need to calculate special checksums, I do not have knowledge in this subject, I know it from customers.
@DawidKellerman 4 жыл бұрын
Thank you!! Good Video if you could move the processing to a GPU but I assume that would not be possible.. if you could have a emulator.. the sfp speed would not be a problem..
@REVELTRONICS 4 жыл бұрын
Unfortunately the speed limitation is not on the PC side, it's on SFP/QSFP side (transceivers' uC clock, transiceivers eeprom emulation in flash speed and I2C bus speed) so brute force speeds will vary and it depends on tranceiver speed :( Anyway REVELPROG-IS software is using some tricks to speed whole process about 10 times for some transceivers in compare to standard brute force method.
@GrecoGonzalez 2 жыл бұрын
hello, so we can code sfp qsfp for every brand .. thanks
@REVELTRONICS 2 жыл бұрын
To be honest not exactly, because brute force will not work for every transceiver - some transceivers are protected in other way, e.g. hardware protection (internal jumper) or other firmware protection (not compliance with MSA standard)
@GrecoGonzalez 2 жыл бұрын
@@REVELTRONICS email contact
@GrecoGonzalez 2 жыл бұрын
@@REVELTRONICS thank you for the information, do you have an email I can contact you directly? I have some questions hope you can provide , thank you
@GrecoGonzalez 2 жыл бұрын
] sent some emails. I register at your page..
@REVELTRONICS 2 жыл бұрын
@@GrecoGonzalez www.reveltronics.com/en/contact-us
@MutenRoshi-vd6tw 9 ай бұрын
Thank you very much
@l3ll0xd59 4 жыл бұрын
Si sente che sei italiano
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