Hi there,
I’ve got a dual wan setup on my RB450G (both ISP’s have a dynamic IP addressing to me; although it will generally stay the same unless there network crashes or my equipment is off for a long time.)
The way in which the network is currently setup is the following:
WAN 1 = VoIP only and failover if WAN 2 goes down
WAN 2 = All other traffic and failover if WAN 1 goes down
I have a VoIP PBX (running windows, 3CX PBX software) from the static LAN IP of 192.168.0.200 - all traffic regardless if its VOIP or not, will go over WAN 1 (this is how I want it).
The problem I’m facing at the moment seems to be random (i.e. issues can happen any time without warning).
- VoIP calls (both in and out) to my provider will not route correctly; they will simply fail regardless if STUN is used or not.
- If only have one WAN connection running (i.e. other disabled) there is no problem what so ever with the traffic, so the failover’s are working correctly.
- When using both WANs, sometimes the PBX will work for weeks without issues sometimes it will not work at all right from the second of enabling both WANs.
- During these issues, If I check the external IP being used, it will show WAN 1 (which is correct) but when trying a call; its almost like the call gets ‘lost’ in the network and returns an error. From what I can see on my wireshark log, is that the call goes out via WAN 1; but there is no trace of it coming back through WAN 1.
If someone could help me that would be great; just let me know what parts of the configuration you need to see.