Find the tomato settings changed. Pretty-print the output.
Takes the current nvram dump, nvram.txt:
...
wl2_rateset=default
wl1_txpwr=0
wl1_nmcsidx=-1
tor_iface=br0
mysql_net_buffer_length=2
webmon_bkp=0
wl_macaddr=
wl1_bsd_if_select_policy=eth2 eth3
lan_route=
wl1_rx_amsdu_in_ampdu=off
wl0_mrate=0
wl1_channel=132
mysql_binary=internal
nginx_priority=10
wan3_modem_band=7FFFFFFFFFFFFFFF
wan3_proto=dhcp
qos_inuse=511
wan3_get_dns=
...
Compares it against an nvram dump of the defaults, defaults.txt:
...
lan_route=
wl1_bsd_if_select_policy=eth2 eth3
wl_macaddr=
webmon_bkp=0
mysql_net_buffer_length=2
tor_iface=br0
wl1_nmcsidx=-1
wl1_txpwr=0
wl2_rateset=default
wan3_proto=dhcp
wan3_modem_band=7FFFFFFFFFFFFFFF
nginx_priority=10
mysql_binary=internal
wl1_channel=100
wl0_mrate=0
wl1_rx_amsdu_in_ampdu=off
wan3_get_dns=
...
Generates a readable shell script from the difference, set-nvram.sh:
...
# LAN
nvram set lan_ipaddr=192.168.123.1
# Wireless (2.4 GHz)
nvram set wl0_bw_cap=1
nvram set wl0_channel=1
nvram set wl0_chanspec=1
nvram set wl0_nbw=20
nvram set wl0_nbw_cap=0
nvram set wl0_nctrlsb=lower
# Wireless (5 GHz)
nvram set wl1_channel=132
nvram set wl1_chanspec=132/80
nvram set wl1_radio=0
...
Requires: Python 3.x
Save the current settings as nvram.txt, from Administration→Debugging→Download NVRAM Dump in the Tomato web UI, in the same directory as tomato-nvram.py.
Reset the router's NVRAM. Try to ensure that all the default settings have been set. This is how I do it:
- Erase all data in NVRAM. Wait for the router to boot.
- Reboot (because on my RT-AC66U, the 5 GHz radio doesn't show up otherwise).
- Click Save without changing anything on at least these sections:
- Basic→Network
- Advanced→Wireless
- Administration→Admin Access
Save the defaults as defaults.txt, from Administration→Debugging→Download NVRAM Dump in the Tomato web UI, in the same directory as tomato-nvram.py.
Run tomato-nvram.py:
$ ./tomato-nvram.py
102 settings written to set-nvram.sh
View/Edit output file set-nvram.sh to choose which settings to reapply.
Reapply settings over SSH:
> "C:\Program Files\PuTTY\plink.exe" -ssh root@192.168.1.1 -pw admin -m set-nvram.sh
Or
$ ssh root@192.168.1.1 'sh -s' < set-nvram.sh
$ ./tomato-nvram.py --help
usage: tomato-nvram.py [-h] [-i INPUT] [-b BASE] [-o OUTPUT] [-c CONFIG] [--erase] [--reboot] [--linux]
Generate NVRAM setting shell script.
optional arguments:
-h, --help show this help message and exit
-i INPUT, --input INPUT
input filename (default: nvram.txt)
-b BASE, --base BASE base filename (default: defaults.txt)
-o OUTPUT, --output OUTPUT
output filename (default: set-nvram.sh)
-c CONFIG, --config CONFIG
config filename (default: config.ini)
--erase erase nvram first (default: False)
--reboot reboot after (default: False)
--linux output linux line endings (default: False)