Quelltext der Seite Ubiquiti UniFi Security Gateway (USG-3P) Dual-WAN Internet

=Allgemeines=
Ich habe 2 ISPs. Einmal Kabel WAN1 (Vodafone 1GB/s) und einmal DSL16 WAN2 (1und1). Beide sind am USG (WAN1 Primary und WAN2 Secondary) angeschlossen und auf Fallback eingestellt.

=Problem=
Nach einem Ausfall des Kabelanschlusses hat das Fallback nur teilweise funktioniert. Die über LAN angschlossenen Geraete hatten tatsaechlich eine Verbindung ueber WAN2 erhalten, (ein Teil der) WLAN-Geraete nicht.
Ein Reset der Kabelbox brachte zwar das Internet wieder zurueck, aber das USG schaltete nicht wieder zurueck auf WAN1.

Das Problem scheint bekannt. [https://community.ui.com/questions/WAN-Failover-Not-going-back-to-WAN1/acd459db-9ca7-4fb1-9dc6-3943a6cdec9a?page=6] 

=Status=
Folgende Routen und Links habe ich bei mir mir aktivem Fallback sehen können.

<syntaxhighlight lang=bash>
Tibb@ubnt:~$ ip r
84.59.176.1 dev pppoe1  proto kernel  scope link  src 84.59.186.223 
127.0.0.0/8 dev lo  proto kernel  scope link  src 127.0.0.1 
192.168.1.0/24 dev eth0  proto kernel  scope link  src 192.168.1.2 
192.168.2.0/24 dev eth1.2  proto kernel  scope link  src 192.168.2.1 
192.168.148.0/24 dev eth1.148  proto kernel  scope link  src 192.168.148.1 
192.168.178.0/24 dev eth1  proto kernel  scope link  src 192.168.178.1 
Tibb@ubnt:~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
    link/ether fc:ec:da:44:a5:3a brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.2/24 brd 192.168.1.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::feec:daff:fe44:a53a/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN 
    link/ether fc:ec:da:44:a5:3b brd ff:ff:ff:ff:ff:ff
    inet 192.168.178.1/24 brd 192.168.178.255 scope global eth1
       valid_lft forever preferred_lft forever
    inet6 fe80::feec:daff:fe44:a53b/64 scope link 
       valid_lft forever preferred_lft forever
4: eth2: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
    link/ether fc:ec:da:44:a5:3c brd ff:ff:ff:ff:ff:ff
    inet6 fe80::feec:daff:fe44:a53c/64 scope link 
       valid_lft forever preferred_lft forever
5: imq0: <NOARP,UP,LOWER_UP> mtu 16000 qdisc pfifo_fast state UNKNOWN qlen 11000
    link/void 
8: eth1.148@eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
    link/ether fc:ec:da:44:a5:3b brd ff:ff:ff:ff:ff:ff
    inet 192.168.148.1/24 brd 192.168.148.255 scope global eth1.148
       valid_lft forever preferred_lft forever
    inet6 fe80::feec:daff:fe44:a53b/64 scope link 
       valid_lft forever preferred_lft forever
12: eth1.2@eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
    link/ether fc:ec:da:44:a5:3b brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.1/24 brd 192.168.2.255 scope global eth1.2
       valid_lft forever preferred_lft forever
    inet6 fe80::feec:daff:fe44:a53b/64 scope link 
       valid_lft forever preferred_lft forever
24: pppoe1: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1492 qdisc pfifo_fast state UNKNOWN qlen 100
    link/ppp 
    inet 84.59.186.223 peer 84.59.176.1/32 scope global pppoe1
       valid_lft forever preferred_lft forever

Tibb@ubnt:~$ show load-balance status
Group wan_failover
  interface   : eth0
  carrier     : up
  status      : inactive
  gateway     : 192.168.1.1
  route table : 203
  weight      : 0%
  flows
      WAN Out : 164
      WAN In  : 0
    Local Out : 0

  interface   : pppoe1
  carrier     : up
  status      : failover
  gateway     : pppoe1
  route table : 202
  weight      : 0%
  flows
      WAN Out : 56863
      WAN In  : 0
    Local Out : 0

Tibb@ubnt:~$ show load-balance watchdog
Group wan_failover
  eth0
  status: Waiting on recovery (0/3)
  pings: 3
  fails: 3
  run fails: 3/3
  route drops: 1
  ping gateway: ping.ubnt.com - DOWN
  last route drop   : Sat Feb 24 04:15:52 2024

  pppoe1
  status: Waiting on recovery (0/3)
  failover-only mode
  pings: 3
  fails: 3
  run fails: 3/3
  route drops: 1
  ping gateway: ping.ubnt.com - DOWN
  last route drop   : Sat Feb 24 04:15:53 2024

Tibb@ubnt:~$ show interfaces
Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
Interface    IP Address                        S/L  Description                 
---------    ----------                        ---  -----------                 
eth0         192.168.1.2/24                    u/u  WAN                         
eth1         192.168.178.1/24                  u/u  LAN                         
eth1.2       192.168.2.1/24                    u/u                              
eth1.148     192.168.148.1/24                  u/u                              
eth2         -                                 u/u  WAN2                        
lo           127.0.0.1/8                       u/u                              
             ::1/128                          
pppoe1       84.59.186.223                     u/u           

Tibb@ubnt:~$ show ip route
Codes: K - kernel route, C - connected, S - static, R - RIP, O - OSPF,
       I - ISIS, B - BGP, > - selected route, * - FIB route

S>  0.0.0.0/0 [230/0] via 192.168.1.1, eth0
                      is directly connected, pppoe1
C>* 84.59.176.1/32 is directly connected, pppoe1
C>* 127.0.0.0/8 is directly connected, lo
C>* 192.168.1.0/24 is directly connected, eth0
C>* 192.168.2.0/24 is directly connected, eth1.2
C>* 192.168.148.0/24 is directly connected, eth1.148
C>* 192.168.178.0/24 is directly connected, eth1
                  
</syntaxhighlight>

Um alle Config-Einstellungen zu sehen.

 show configuration commands > config.txt
 cat config.txt