![]() (more can be added, but requires more networking understanding). Eth1, by virtue of it being a bridged interface is in promiscuous mode and is listening to EVERYTHING.ĮSXi, as a Type 1 hypervisor does not have the ability to be on the same host as the desktop client (unless you are doing some black magic deep nested virtualization that you probably should not be doing), thus why it only has an eth0 for the GNS3 VM interfaces. So in your case, you have both interfaces (eth0/eth1) plugged into the same switch. ![]() (actually, I believe it defaults to bridging to ALL of the physical interface on the host computer. VMNet0, is also a separate virtual switch, however it bridges to a physical interface on the host system. It basically creates an isolated virtual switch and connects the VM and a virtual interface on the computer to it. This segregates the "control plane" traffic and does not expose it to the real network or the physical devices physical NIC. What is the significance of it being deigned as Host-Only? My configuration for EVE-NG is identical, and I never have this issue.ĮSXi and VMware Workstation are 2 different animals. Seems like there's some weird behavior going on here. it created a huge loop, even when not plugged into a cloud node. This is JUST the effect of creating the connection between the two nodes.ĮDIT: I went ahead and created a bridge (br0) and added eth1 to it to see what would happen. Note: The IOU device isn't even turned on. Even then, it still created a loop (tons of TCP duplicate errors). Note: in the past, I didn't have eth1 I just connected everything to eth0. However, the moment I connect eth1 into my VM environment, eth0 suddenly starts copying ALL of its network traffic into eth1 (and into my GNS3 topology) and creates a loop. I would expect that, once I hook up eth1 (via the Cloud node) to my GNS3 network, that would stay the same. Under normal circumstances, eth1 receives no traffic (other than broadcasts on my home network). Why do I have eth1 at all? Because I don't want all of the GNS3 Client GNS3 VM traffic copied into my topology. It does not have an IP addressThis is what I connect the "cloud" node to. eth1 - Exists only to bridge the GNS3 environment to the real world.eth0 - Hosts the GNS3 VM's management/control plane has an IP address of 192.168.1.230.I have had this same issue in the past with GNS3 on ESXi as well. I have my GNS3 VM set up with 2 interfaces, both of which connect to VMNet0 (Bridged Network) via VMware Workstation Pro on Windows 11. The problem I'm running into is the way you guys do bridging on the "cloud" node. I like to bridge my GNS3 networks into the real world I don't NAT them, because I want them all to have direct communication with my home network. Am I overthinking it? It works just fine in WM Player, which I do understand is a completely different animal.This has been an ongoing issue for a while. I fell like this is a limitation of the GNS3 VM as I have tried to create VLAN interfaces and / or bridges in netplan for eth0 but that seems to break it as well. We have read up on how to configure trunking in ESXi and it works to other devices (PAN-OS-VMs) but not GNS3. ![]() I have to restore snapshots (THANK YOU SNAPSHOTS!) to restore connectivity. Even if we disconnect it in VCenter it still breaks ETH0. If we present a new VNIC to GNS3 it breaks the original connection and I get an error stating ETH0 is not configured. ![]() I am trying to trunk to our GNS3 VM and am having quite the time. I'm a mere packet jockey with limited experience on the UCS and ESXi. Unfortunately we don't have any ESXi / Cisco UCS experts on the team. ![]() I am reaching out to the community because I cannot be the only one who has tried this. ![]()
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