The title is pretty much the TLDR of it. We have some odd stuff going on in our network. To make it short, we have a Large ERPS connected domain with thousands of endpoint. Not a lot of VLANs though. The Master Node of the ERPS domain connects to another set of more powerful Juniper Switches in which connects to other ERPS Master Nodes.
We have a new device (lets just call it an AP) that we need to get onto the network. It get a trunked port since multiple VLANS will be used. When we connect it to one of our L3 Switches, we cannot ping it. Not even if we connect to the same switch directly with a laptop. If we put a dumb L2 switch in-between the AP and the L3 switch, it works.
Here is where it gets even more weird. With L2 Switch connected, and the laptop connected to the L3 switch, the pings are really high (20-30ms with 100+ spikes). If we plug the laptop into the L2 switch, then the pings are where they should be (under 1ms). There are no protection mechanisms on this VLAN like MAC Force Forwarding and IP Source Verify. There's not even a DHCP Server, it's all statically assigned.
Anyone got a clue as to WTH is going on? Our main netadmin is stumped.
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