SFP GPON ONU

Some stuff about SFP GPON ONU modules (GPON sticks).

Modules using RTL8672 & RTL9601C chipset

Including: V-SOL V2801F, C-Data FD511GX-RM0, OPTON GP801R, BAUDCOM BD-1234-SFM, CPGOS03-0490 v2.0, EXOT - EGS1, NanTianWeiShi, Ubiquiti U-Fiber Instant, ODI newer model, etc.

If your ISP uses hexadecimal GPON PLOAM password (idONT), although the normal WebUI and flash / xmlconfig / mib command doesn't allow you to set a hexadecimal password containing unprintable characters (for example a password for Movistar Spain: 0xF2021030405678000000), but there is still a way to use it since /bin/omci_app still accepts and will work well with hexadecimal password as an argument value in command line.

1. Flash a custom firmware (you can find information about customizing firmware here) with an already modified script in step 2, or flash a firmware including a text editor like vi, some modules' firmwares may already have one. If you couldn't find a way to flash, maybe sed can also do the trick by replacing string.

2. Edit the script /etc/runomci.sh, find the argument part $gpon_ploam_pwd_set in the last line (it should start with omci_app -s $gpon_sn...) or in the middle of file gpon_ploam_pwd_set="-p $gpon_ploam_pwd". Change it to "$(echo -ne '\xf2\x02\x10...')" which is your escaped hexadecimal password. For example, if your idONT is 0xF2021030405678000000, it should be "$(echo -ne '\xf2\x02\x10\x30\x40\x56\x78\x00\x00\x00')".

3. Done! (For some ISPs, you may also need to enable the OMCI fake ok option by flash set OMCI_FAKE_OK 1 or similar command.)

Example for step 2: if the original last line in your runomci.sh looks like this (on a NanTianWeiShi module, shouldn't be very different on other modules):

omci_app -s $gpon_sn -f $(get_omci_log_format) -m $(get_omci_dual_mgmt_mode) -d $(get_omci_dbg_level) -t $(get_omci_dev_type) $gpon_ploam_pwd_set $gpon_loid_set $gpon_loidPwd_set $(get_omci_cus_conf) $(get_omci_iot_vlan_cfg) $(get_omci_veip_slot_id_conf) $(get_omci_voice_vendor) &

the final result should be like this:

omci_app -s $gpon_sn -f $(get_omci_log_format) -m $(get_omci_dual_mgmt_mode) -d $(get_omci_dbg_level) -t $(get_omci_dev_type) -p "$(echo -ne '\xf2\x02\x10\x30\x40\x56\x78\x00\x00\x00')" $gpon_loid_set $gpon_loidPwd_set $(get_omci_cus_conf) $(get_omci_iot_vlan_cfg) $(get_omci_veip_slot_id_conf) $(get_omci_voice_vendor) &

DFP-34X-2C2 / DFP-34G-2C2

Conclusion

After communicating with the developer from ODI, it is confirmed that the first model (with PON STICK V01 printed on PCB near the SFP connector) is IMPOSSIBLE to use a hexadecimal GPON PLOAM password even with it set in tagparam using my program, due to the implementations of /lib/libdb.so and /bin/gpon_omci won't use it correctly. And ODI is not planning to release an upgraded firmware in the future (they have already developed a newer model with hex password support). Therefore, this model can't be used with ISPs like Movistar Spain.

(USELESS) Set hexadecimal GPON password

(There is a pre-built binary available in releases)

1. Set up a cross-compilation environment with crosstool-ng

• Use the ct-ng.config in the repo, or config it as arm-unknown-linux-uclibcgnueabi in the samples, with CPU set to arm9tdmi.

2. Compile the dummy libtagparamuserapi.so with command like arm-unknown-linux-uclibcgnueabi-gcc -shared -o libtagparamuserapi.so libtagparamuserapi.c.
3. Compile the program with command like arm-unknown-linux-uclibcgnueabi-gcc -std=c99 libtagparamuserapi.so -s -o setmac_hex setmac_hex.c.
4. Set up a TFTP server in the same subnet, telnet to stick and get the executable with commands like tftp -r setmac_hex -l /var/tmp/setmac_hex -g 192.168.1.2 69 && chmod +x /var/tmp/setmac_hex.
5. Run command like /var/tmp/setmac_hex 1 2178 "f2 01 80 01 02 03 04 00 00 00" to set GPON password
6. Run setmac 2 2178 or /var/tmp/setmac_hex 2 2178 to verify the result.