Network is unreachable Gateway Ping solution

There are several machines in there that do not ping the gateway, but the other machines in the ping switch can ping, and other machines ping the gateway can ping. Then the hardware is discharged, and the main problem is on the routing table of the machine.

Look at the routing table.

Route-n

Destination     Gateway         genmask         Flags Metric Ref use    iface
12.12.12.0      0.0.0.0         255.255.255.0   u     0      0        0 eth1
10.10.108.0     0.0.0.0         255.255.255.0   u     0      0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     1002   0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     1003   0        0 eth1     192.168.0.0 0.0.0.0         255.255.0.0     U     0      0        0 eth1

Found that there is no gateway I want, so I will add a

Route add default GW 10.10.88.203 eth0

Default is generally 0.0.0.0 to represent any address

But found the following error

Siocaddrt:no such process

This is because I want to add the 10.10.88.203 and my host 10.10.108.23 not the same network segment, need to add a

Route add 10.10.88.203 Dev eth0

And then execute the above command.

Route-n can see the results, the bottom of the list is what we want. And the machine will be able to ping the gateway perfectly.

Destination     Gateway         genmask         Flags Metric Ref use    iface
12.12.12.0      0.0.0.0         255.255.255.0   u     0      0        0 eth1
10.10.108.0     0.0.0.0         255.255.255.0   u     0      0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     1002   0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     1003   0        0 eth1

0.0.0.0         10.10.88.203    0.0.0.0         UG    0      0        0 eth0