问题：PC-10和PC-30是不同网段下，同一VLAN里的两台PC，现在想将其ping通
1. 两个PC都不设置网关
PC-10-1
- ip：192.168.10.11
- 子网：255.255.255.0
- 网关：.0.0.0.0
PC-30-1
- ip：192.168.30.13
- 子网：255.255.255.0
- 网关：.0.0.0.0
ping失败
# 使用PC-10-1 ping PC-30-3
PC>ping 192.168.30.13
Ping 192.168.30.13: 32 data bytes, Press Ctrl_C to break
From 192.168.10.11: Destination host unreachable
# ------------------------------------------------------------------------
# 使用PC-30-3 ping PC-10-1
PC>ping 192.168.10.11
Ping 192.168.10.11: 32 data bytes, Press Ctrl_C to break
From 192.168.30.13: Destination host unreachable
2. 将PC-10的网关设置为PC-30的ip
PC-10-1
- ip：192.168.10.11
- 子网：255.255.255.0
- 网关：192.168.30.13
PC-30-1
- ip：192.168.30.13
- 子网：255.255.255.0
- 网关：.0.0.0.0
# 使用PC-10-1 ping PC-30-3
PC>ping 192.168.30.13
Ping 192.168.30.13: 32 data bytes, Press Ctrl_C to break
Request timeout!
Request timeout!
Request timeout!
Request timeout!
Request timeout!
--- 192.168.30.13 ping statistics ---
5 packet(s) transmitted
0 packet(s) received
100.00% packet loss
# ------------------------------------------------------------------------
# 使用PC-30-3 ping PC-10-1
PC>ping 192.168.10.11
Ping 192.168.10.11: 32 data bytes, Press Ctrl_C to break
From 192.168.30.13: Destination host unreachable
3. 将PC-10的网关设置为自己的ip
PC-10-1
- ip：192.168.10.11
- 子网：255.255.255.0
- 网关：192.168.10.11
PC-30-1
- ip：192.168.30.13
- 子网：255.255.255.0
- 网关：.0.0.0.0
# 使用PC-10-1 ping PC-30-3
PC>ping 192.168.30.13
Ping 192.168.30.13: 32 data bytes, Press Ctrl_C to break
From 192.168.10.11: Destination host unreachable
From 192.168.10.11: Destination host unreachable
From 192.168.10.11: Destination host unreachable
From 192.168.10.11: Destination host unreachable
From 192.168.10.11: Destination host unreachable
--- 192.168.10.11 ping statistics ---
5 packet(s) transmitted
0 packet(s) received
100.00% packet loss
# ------------------------------------------------------------------------
# 使用PC-30-3 ping PC-10-1
PC>ping 192.168.10.11
Ping 192.168.10.11: 32 data bytes, Press Ctrl_C to break
From 192.168.30.13: Destination host unreachable
4. 将PC-10和PC-30的网关设置为自己的ip
PC-10-1
- ip：192.168.10.11
- 子网：255.255.255.0
- 网关：192.168.10.11
PC-30-1
- ip：192.168.30.13
- 子网：255.255.255.0
- 网关：.192.168.30.13
# 使用PC-10-1 ping PC-30-3
PC>ping 192.168.30.13
Ping 192.168.30.13: 32 data bytes, Press Ctrl_C to break
From 192.168.10.11: Destination host unreachable
From 192.168.10.11: Destination host unreachable
From 192.168.10.11: Destination host unreachable
From 192.168.10.11: Destination host unreachable
From 192.168.10.11: Destination host unreachable
--- 192.168.10.11 ping statistics ---
5 packet(s) transmitted
0 packet(s) received
100.00% packet loss
# ------------------------------------------------------------------------
# 使用PC-30-3 ping PC-10-1
PC>ping 192.168.10.11
Ping 192.168.10.11: 32 data bytes, Press Ctrl_C to break
From 192.168.30.13: Destination host unreachable
From 192.168.30.13: Destination host unreachable
From 192.168.30.13: Destination host unreachable
From 192.168.30.13: Destination host unreachable
From 192.168.30.13: Destination host unreachable
--- 192.168.30.13 ping statistics ---
5 packet(s) transmitted
0 packet(s) received
100.00% packet loss
5. 将PC-10和PC-30的网关设置为对方的ip
PC-10-1
- ip：192.168.10.11
- 子网：255.255.255.0
- 网关：192.168.30.13
PC-30-1
- ip：192.168.30.13
- 子网：255.255.255.0
- 网关：192.168.10.11
# 使用PC-10-1 ping PC-30-3
PC>ping 192.168.30.13
Ping 192.168.30.13: 32 data bytes, Press Ctrl_C to break
From 192.168.30.13: bytes=32 seq=1 ttl=128 time=31 ms
From 192.168.30.13: bytes=32 seq=2 ttl=128 time=47 ms
From 192.168.30.13: bytes=32 seq=3 ttl=128 time=47 ms
From 192.168.30.13: bytes=32 seq=4 ttl=128 time=63 ms
From 192.168.30.13: bytes=32 seq=5 ttl=128 time=47 ms
--- 192.168.30.13 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 31/47/63 ms
# ------------------------------------------------------------------------
# 使用PC-30-3 ping PC-10-1
PC>ping 192.168.10.11
Ping 192.168.10.11: 32 data bytes, Press Ctrl_C to break
From 192.168.10.11: bytes=32 seq=1 ttl=128 time=31 ms
From 192.168.10.11: bytes=32 seq=2 ttl=128 time=47 ms
From 192.168.10.11: bytes=32 seq=3 ttl=128 time=62 ms
From 192.168.10.11: bytes=32 seq=4 ttl=128 time=31 ms
From 192.168.10.11: bytes=32 seq=5 ttl=128 time=47 ms
--- 192.168.10.11 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 31/43/62 ms
总结
不同网段下处于同一VLAN里的主机之间想要ping通，将自己的网关设置为对方的ip即可