====== デバイスの確認 ======
<code>
$ ssh monsters-g-wrt
DD-WRT v3.0-r37305 std (c) 2018 NewMedia-NET GmbH
Release: 10/10/18
==========================================================
 
     ___  ___     _      _____  ______       ____  ___ 
    / _ \/ _ \___| | /| / / _ \/_  __/ _  __|_  / / _ \
   / // / // /___/ |/ |/ / , _/ / /   | |/ //_ <_/ // /
  /____/____/    |__/|__/_/|_| /_/    |___/____(_)___/ 
                                                     
                       DD-WRT v3.0
                   http://www.dd-wrt.com
 
==========================================================


BusyBox v1.29.3 (2018-10-10 09:48:09 CEST) built-in shell (ash)

# ls /sys/class/net/
br0    eth0   eth1   eth2   lo     teql0  vlan1  vlan2
# nvram show | grep wl[0-9]_ifname
wl0_ifname=eth1
wl1_ifname=eth2
# ifconfig
br0       Link encap:Ethernet  HWaddr B0:C7:45:16:3E:49  
          inet addr:192.168.1.254  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:23454 errors:0 dropped:26 overruns:0 frame:0
          TX packets:33422 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:3195287 (3.0 MiB)  TX bytes:33895660 (32.3 MiB)

eth0      Link encap:Ethernet  HWaddr B0:C7:45:16:3E:47  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:84850 errors:0 dropped:0 overruns:0 frame:0
          TX packets:124650 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:11187931 (10.6 MiB)  TX bytes:90808301 (86.6 MiB)
          Interrupt:179 Base address:0x4000 

eth1      Link encap:Ethernet  HWaddr B0:C7:45:16:3E:49  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:103 overruns:0 frame:291150
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:163 

eth2      Link encap:Ethernet  HWaddr B0:C7:45:16:3E:4A  
          inet addr:192.168.2.174  Bcast:192.168.2.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1492  Metric:1
          RX packets:33250 errors:0 dropped:407 overruns:0 frame:1625663
          TX packets:24415 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:31852433 (30.3 MiB)  TX bytes:3658427 (3.4 MiB)
          Interrupt:169 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING MULTICAST  MTU:65536  Metric:1
          RX packets:22254 errors:0 dropped:0 overruns:0 frame:0
          TX packets:22254 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1 
          RX bytes:1645417 (1.5 MiB)  TX bytes:1645417 (1.5 MiB)

vlan1     Link encap:Ethernet  HWaddr B0:C7:45:16:3E:47  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:84850 errors:0 dropped:0 overruns:0 frame:0
          TX packets:110594 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:9321231 (8.8 MiB)  TX bytes:89169968 (85.0 MiB)

vlan2     Link encap:Ethernet  HWaddr B0:C7:45:16:3E:48  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:14056 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:1139733 (1.0 MiB)
</code>
\\
**br0** はルーターのIPアドレスであるブリッジデバイスである。\\
**eth0** はルーターの WAN Port である。\\
**eth1** はルーターの WiFi 5G 帯のインターフェースである。\\
**eth2** はルーターの WiFi 2.4G 帯のインターフェースである。\\