WAN_PPPOE gateway goes offline during transfer between VLANs
I`m experiencing a very strange problem for quite some time. My ISP provides me with 300Mb/s speeds through PON and PPPOE. Everything from to PON to throught the pfsense router, the switch and the whole network is gigabit. I have two vlans and when I transfer files between two computers (one in each vlan), my WAN_PPPOE gateway goes offline and my network connection drops during the transfer. My switch is an L3 managed switch, I have enabled all the options that I think can help with this problem, but I have no luck. The strange thing is that the data transfer happens on the internal network and this drops my WAN connection. What is causing this problem? This happens only between the vlans, if I connect the computers in a single vlan everything is fine.
@vkirov Is your L3 switch implemented as an L3 switch on your network or is it only providing L2?
Is the WAN interface actually going down or is it that your clients on VLANs appear to lose internet connectivity? How about PFsense itself?
If your switch is only providing L2, most likely your inter-vlan traffic is saturating the parent interface and presenting itself as an internet outage.
If a saturated parent interface is the issue, there are various solutions to address that.
Otherwise, I can't see how traffic being hairpin'd on the LAN interface would affect link state on the WAN interface. Unless you're running cheap, software-based NIC's and it's a resource issue.... maybe.
@marvosa Well I forgot to mention that my Pfsense is virtualized in Proxmox, but I use a dedicated two port Intel gigabit NIC for WAN and LAN. This problem appeared when I upgraded my whole network to gigabit. The WAN interface just drops for parts of the second and the connectivity just comes and goes during the file transfer. I tried today to tweek QoS on the switch and actualy managed to fix the problem for now, but the transfer speeds dropped significantly.