Question

Can I set the order of priority for wired and wireless (SIM) connections when accessing the Internet?

Answer

As shown in the following example, if the default route metric value of ecm0 is 10 and the one of eth0 is 30, packets will be sent from ecm0 preferentially.

Also, if the ecm0 line is disconnected, packets will be sent from eth0.

*Please note that disconnection of eth0 can be detected only when the link is down.

Example of the confirmation command in the routing table

amnimo# show routing
 TO              　VIA             METRIC   INTERFACE
default 　　　　　192.168.1.1 　  0        eth0
default 　　　　　172.16.64.0/18  30       ecm0
172.16.64.0/18  　0.0.0.0         0        ecm0
172.16.64.1 　　　0.0.0.0         30       ecm0
192.168.0.0/24 　 0.0.0.0         0        br0
192.168.1.0/24  　0.0.0.0         0        eth0 

Example of setting the default route and metric in the routing table

amnimo(cfg)# routing static default
amnimo(cfg-rts-default)# to 0.0.0.0/0
amnimo(cfg-rts-default)# via 172.16.64.1
amnimo(cfg-rts-default)# metric 30
amnimo(cfg-rts-default)# interface eth0
amnimo(cfg-rts-default)# exit

Reference pages

• I want to switch the SIM to another one if the communication is interrupted
• 通信速度によって SIM を自動で切り替えたい (Japanese Only)
• CLI ユーザーズマニュアル - 6.3.3 ルーティングテーブルの設定をする (Japanese Only)