NVRAM

The NVRAM is the Non-Volatile RAM. It stores all kind of parameters. You can check the with the command nvram show | sort. The output should be:

aa0=3
ag0=255
boardflags2=0
boardflags=0x0118
boardnum=42
boardrev=0x10
boardtype=0x0708
boot_ver=v3.5
boot_wait=off
bootnv_ver=6
ccode=0
cctl=0
clkfreq=216
dl_ram_addr=a0001000
dmz_ifname=vlan2
dmz_ifnames=vlan2
dmz_ipaddr=192.168.20.1
dmz_netmask=255.255.255.0
dmz_proto=static
eou_device_id=3K2UWR55
eou_private_key=**secret**
eou_public_key=**secret**
et0macaddr=??:??:??:??:??:??
et0mdcport=0
et0phyaddr=30
free_ifname=vlan4
free_ifnames=vlan4
free_ipaddr=192.168.40.1
free_netmask=255.255.255.0
free_proto=static
gpio5=robo_reset
ifup_interfaces=wan lan dmz voip free
il0macaddr=??:??:??:??:??:??
lan_dns=192.168.10.10
lan_gateway=10.0.0.10
lan_ifname=vlan1
lan_ifnames=vlan0 eth1 eth2
lan_ipaddr=192.168.10.10
lan_netmask=255.255.255.0
lan_proto=static
log_ipaddr=192.168.10.1
os_flash_addr=bfc40000
os_ram_addr=80001000
pa0b0=0x15eb
pa0b1=0xfa82
pa0b2=0xfe66
pa0itssit=62
pa0maxpwr=0x4e
pmon_ver=CFE 3.91.7.0
scratch=a0180000
sdram_config=0x0062
sdram_init=0x010b
sdram_ncdl=0xfe0007
sdram_refresh=0x0000
sromrev=2
vlan0hwname=et0
vlan0ports=0 5
vlan1hwname=et0
vlan1ports=1 5
vlan2hwname=et0
vlan2ports=2 5
vlan3hwname=et0
vlan3ports=3 5
vlan4hwname=et0
vlan4ports=4 5
voip_ifname=vlan3
voip_ifnames=vlan3
voip_ipaddr=192.168.30.1
voip_netmask=255.255.255.0
voip_proto=static
wan_device=eth0
wan_ifname=vlan0
wan_ifnames=vlan0
wan_ipaddr=10.0.0.7
wan_netmask=255.255.255.0
wan_proto=static
watchdog=5000
wl0_akm=none
wl0_channel=0
wl0_closed=0
wl0_crypto=tkip
wl0_ifname=eth1
wl0_infra=1
wl0_mode=ap
wl0_radio=0
wl0_ssid=OpenWrt
wl0_wep=disabled
wl0gpio2=0
wl0gpio3=0
wl0id=0x4320