Re: Recommended STP port settings for WAN Breakout Network
The ISP routers have routed links "on the outside". That is i.e. Gi8.
On the inside, the WAN link is a VLAN (vlan30).
Basically, the entire VLAN30 is one big Layer 2 Network on the WAN side. So there are four (six including virtual IPs) L3 interfaces on vlan30.
I'll admit though, I just realised that there is a slight error on the drawing. The link from Gi8 to the cloud, should NOT be green, as this is not exactly vlan30. The Gi8 link is a transit link on the ISP side. Nothing that I administer.