|
Interface with DHCP mode:
WAN1 interface is in DHCP mode meaning the gateway is dynamic, in this case:
Configuration of link monitor:
config system link-monitor
edit "1"
set srcintf "wan1"
set server "8.8.8.8" <----- Probing server.
next
end
Note: There is no gateway configured in the link monitor settings.
diagnose sys link-monitor status
Link Monitor: 1, Status: alive, Server num(1), Flags=0x1 init, Create time: Thu Nov 17 05:45:06 2022
Source interface: wan1 (5)
Interval: 500 ms
Peer: 8.8.8.8(8.8.8.8)
Source IP(192.168.0.243)
Route: 192.168.0.243->8.8.8.8/32, gwy(192.168.0.8)
protocol: ping, state: alive
Latency(Min/Max/Avg): 6.437/74.065/20.453 ms
Jitter(Min/Max/Avg): 0.016/65.932/13.671
Packet lost: 0.000%
Number of out-of-sequence packets: 0
Fail Times(0/5)
Packet sent: 54, received: 54, Sequence(sent/rcvd/exp): 55/55/56
Based on the above output, FortiOS dynamically retrieves the gateway when the link-monitor is configured.
The same is applied to the PPPOE interface:
diagnose sys link-monitor status
Link Monitor: 1, Status: alive, Server num(1), HA state: local(alive), shared(alive)
Flags=0x1 init, Create time: Wed Nov 23 17:07:07 2022
Source interface: custvlan (ppp1) (27)
Interval: 500 ms
Service-detect: disable
Diffservcode: 000000
Class-ID: 0
Peer: 1.1.1.1(1.1.1.1)
Source IP(192.168.3.22)
Route: 192.168.3.22->1.1.1.1/32, gwy(192.168.4.254) <----- Gateway is automatically detected.
protocol: ping, state: alive <----- Ping results state is alive.
Latency(Min/Max/Avg): 7.445/9.461/8.637 ms
Jitter(Min/Max/Avg): 0.001/1.661/0.522 ms
Packet lost: 0.000%
Number of out-of-sequence packets: 0
Fail Times(0/5)
Packet sent: 649, received: 649, Sequence(sent/rcvd/exp): 650/650/651
Interface setting:
edit "custvlan"
set vdom "root"
set mode pppoe <----- Mode PPPOE.
set distance 10
set device-identification enable
set role lan
set snmp-index 15
set username "pppoe1"
set password ENC xxxxxxxx
set interface "port3 <----- VLAN interface bound to port3 as per the test setup.
Related article:
Technical Tip: Link-Monitor Explained
|
