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---
title: FiberTwist G2110C-2.5G
has_children: false
layout: default
parent: Genexis
---
# Hardware Specifications
| | |
| --------------- | ------------------------------------------------------------ |
| Vendor/Brand | Genexis FiberTwist |
| Model | G2110C-2.5G |
| Chipset | Realtek RTL9601D |
| Flash | 128MB |
| RAM | 32MB |
| System | Linux 3.18 (Luna SDK 3.3) |
| 2.5GBaseT | Yes |
| Optics | SC/APC |
| IP address | 192.168.100.1/24 or 192.168.1.1/24 |
| Web Gui | Can be enabled, locked down by iptables rule and missing CSS |
| SSH | |
| Telnet | ✅ user `company`, password `amyM77yY` |
| Serial | ✅ |
| Serial baud | 115200 |
| Serial encoding | 8-N-1 |
| Form Factor | ONT |
{% include image.html file="ft-g2110c-front.jpg" alt="FiberTwist G2110C-2.5G Front" caption="FiberTwist G2110C-2.5G Front" %}
{% include image.html file="ft-g2110c-back.jpg" alt="FiberTwist G2110C-2.5G Back" caption="FiberTwist G2110C-2.5G Back" %}
## Optical Header installation backplate
{% include image.html file="ft-g2110c-optical-header-1.jpg" alt="FiberTwist G2110C-2.5G Optical Header installation backplate" caption="FiberTwist G2110C-2.5G Optical Header installation backplate" %}
{% include image.html file="ft-g2110c-optical-header-2.jpg" alt="FiberTwist G2110C-2.5G Optical Header installation backplate" caption="FiberTwist G2110C-2.5G Optical Header installation backplate" %}
{% include image.html file="ft-g2110c-optical-header-3.jpg" alt="FiberTwist G2110C-2.5G Optical Header installation backplate" caption="FiberTwist G2110C-2.5G Optical Header installation backplate" %}
## Serial
The ONT has a TTL 3.3v UART console (configured as 115200 8-N-1) that can be accessed from the top surface. To accept TX line commands, the GND of the TTL adapter should be attached to the ONT's shield:
{% include image.html file="ft-g2110c-internal.jpg" alt="FiberTwist G2110C-2.5G Internal" caption="FiberTwist G2110C-2.5G Internal" %}
{% include alert.html content="Some USB TTL adapters label TX and RX pins the other way around: try to swap them if the connection doesn't work." alert="Note" icon="svg-warning" color="yellow" %}
## List of software versions
- C-5.6.1-R
- C-5.7.0-R
- C-5.7.1-DEV3
- C-5.7.1-EFT1
## List of partitions
| dev | size | erasesize | name |
| ----- | -------- | --------- | --------------- |
| mtd0 | 00040000 | 00001000 | "boot" |
| mtd1 | 00002000 | 00001000 | "env" |
| mtd2 | 00002000 | 00001000 | "env2" |
| mtd3 | 0003c000 | 00001000 | "config" |
| mtd4 | 00300000 | 00001000 | "k0" |
| mtd5 | 004c0000 | 00001000 | "r0" |
| mtd6 | 00300000 | 00001000 | "k1" |
| mtd7 | 004c0000 | 00001000 | "r1" |
| mtd8 | 00001000 | 00001000 | "Partition_008" |
| mtd9 | 00001000 | 00001000 | "Partition_009" |
| mtd10 | 00001000 | 00001000 | "Partition_010" |
| mtd11 | 00001000 | 00001000 | "Partition_011" |
| mtd12 | 00300000 | 00001000 | "linux" |
| mtd13 | 004c0000 | 00001000 | "rootfs" |
This ONT supports dual boot.
`k0` and `r0` respectively contain the kernel and firmware of the first image, `k1` and `r1` the kernel and the firmware of the second one
# General Settings and Useful Commands
{% include alert.html content="Some variables are write-protected, you need to unlock them before proceed" alert="Info" icon="svg-info" color="blue" %}
Use the following command to unlock write-protected variables:
```sh
# nv setenv ProtectEnv 0
```
## Getting/Setting the ONT's S/N
{% include alert.html content="If your serial number has letters after the Vendor ID (e.g. ZTEGAAA01234), put them in lower case (e.g. ZTEGaaa01234)" alert="Info" icon="svg-info" color="blue" %}
```sh
# nv setenv GponSn ZTEGaaa01234
```
Reboot the ONT to apply any changes
You can check if the serial number was correclty changed using the following command:
```sh
# diag gpon get serialnumber
ZTEGaaa01234
```
## Changing the Hardware Version
```sh
# nv setenv HV G2110CE2V1D0
```
Reboot ONT to apply the change
## Changing the Equipment ID
```sh
# nv setenv ProdName FT-G2110C-2.5G
```
Reboot ONT to apply the change
## Changing the IP address
```sh
# /etc/scripts/flash get LAN_IP_ADDR
LAN_IP_ADDR=192.168.1.1
# /etc/scripts/flash set LAN_IP_ADDR 192.168.1.1
```
## Getting/Setting the ONT's PLOAM password
{% include alert.html content="The PLOAM password is stored in ASCII format" alert="Info" icon="svg-info" color="blue" %}
```sh
# /etc/scripts/flash get GPON_PLOAM_PASSWD
GPON_PLOAM_PASSWD=AAAAAAAAAA
# /etc/scripts/flash set GPON_PLOAM_PASSWD AAAAAAAAAA
```
Looks like Genexis has also included an U-Boot variable to store the PLOAM. On currently known firmwares (5.6.1 and 5.7.0) it is not read by the `omci_app` daemon.
If you want to be future proof, put your PLOAM also on U-Boot env using the following command in the OS shell:
```sh
# nv setenv ploampwd 1234567890
ploampwd=1234567890
```
## Spoofing firmware version
{% include alert.html content="To change this data you need to upload a modified firmware. Do it at your own risk!" alert="Warning" icon="svg-warning" color="red" %}
- Download the modified firmware from [here](https://mega.nz/file/f0QGwLSb#pyxCUQmlD-KgFU595mHYUsPPUFKJGD2Ug__mCyYIdWs) md5: `2a12b2bbc0971d76fa8201a046544a44`
- Logon on the OS shell of the ONT and run this command: `iptables -F`
- Open a web browser and go to `http://192.168.1.1/upgrade.asp` or `http://192.168.100.1/upgrade.asp`, enter the same credentials used for telnet session, select the modified firmware and click on `Upgrade`
- Once the upgrade is done and you are able to reach the ONT via telnet, log back in and run these commands to change the firmware version on both banks:
```sh
# /etc/scripts/flash set OMCI_OLT_MODE 3
OMCI_OLT_MODE=3
# nv setenv sw_custom_version0=V6.0.10N14
# nv setenv sw_custom_version1=V6.0.10N14
```
Reboot the ONT and check if the version was correctly applied with this command (take a look at the `Version` field):
```sh
# omcicli mib get 7
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
SWImage
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
=================================
EntityID: 0x00
Active: 0
Committed: 0
Valid: 1
*Version: V6.0.10N14*
ProductCode:
ImageHash: 0x00000000000000000000000000000000
=================================
=================================
EntityID: 0x01
Active: 1
Committed: 1
Valid: 1
*Version: V6.0.10N14*
ProductCode:
ImageHash: 0x00000000000000000000000000000000
=================================
```
# Known Bugs
- Modified image (based on C-5.7.1-DEV3 and C-5.7.1-EFT1) has the Web UI enabled, but without an attached fiber the daemon will crash
# Miscellaneous Links
- [FiberTwist G2110C-2.5G](https://genexis.eu/content/uploads/2020/07/FiberTwist-G2110C-2.5G-Installation-Guide-v1.0-EN.pdf)
- [Modded Firmware C-5.7.1-DEV3](https://mega.nz/file/yspFRTJT#JjeDS7NwLZxCzFklQGMJVIuPawo8utQRGbMGEXQv84M)
- [Modded Firmware C-5.7.1-EFT1](https://mega.nz/file/f0QGwLSb#pyxCUQmlD-KgFU595mHYUsPPUFKJGD2Ug__mCyYIdWs)
|
