weizhouapache commented on issue #7364: URL: https://github.com/apache/cloudstack/issues/7364#issuecomment-1484768562
> @weizhouapache > > Thank you for the response. My apologies for my late response. > > Currently the system running the management server and the first host is connected to the switch via two ethernet interfaces `A (10.4.1.1/16)` and `B (10.6.1.1/16)`. **Note**: Both interface A and interface B is connected to an untagged port on the switch (we are using 802.1q VLAN on the switch and it only has options for tagged and untagged ports). The ethernet interface A is used for creating `cloudbr0` and the ethernet interface B is being used to created `cloudbr1`. `cloudbr0` is being used by the Management Network which is using isolation of type VLAN `cloudbr1` is being used by the Guest and Public Network whose isolation type is what we are discussing about. > > Provided the scenario, correct me if I am wrong, based on my understanding if I used VLAN as my isolation type for the Public and Guest, I am assuming, I will need to connect `ethernet interface B` associated to `cloudbr1` to a trunk or tagged port on the switch. I already tried isolation of type VLAN for the Public and Guest Network and had the same issue where VM on the second host couldn't communicate virtual router on the first host. So I am assuming `interface B` being connected to an untagged port on the switch was the issue. > > However, if I use isolation type of VXLAN, which uses layer 3 UDP packets, `ethernet interface B` associated to `cloudbr1` can be connected to an untagged to access port. > > Correct me if I am wrong, provided, my assumptions are correct, I am assuming VXLAN is more likely to work with the existing switch configuration (`interface A` and `interface B` being connected to untagged switch ports) > > Additionally, I am wondering, is there any additional configuration I have to do the system running the management server and the host or install any additional software on it. As I did try isolation type of VXLAN for the Public and the Guest Network with VLAN isolation type for the Management Network. It seemed like, I was having internet connectivity issues on the VMs (regardless of the host they are on). I tried installing Ubuntu 20.04 server, however, the process for fetching updates from the server and downloading was very slow and would eventually crash. I am really confused as to why I was getting such behavior. I checked, the management server log, however, I didnt notice any error messages. @Atiqul-Islam from what I understand (maybe wrong), - if the isolated method is VLAN, switch port needs to be configured as trunk mode. otherwise, the traffic (with vlan tag) from a guest vm on a host cannot be sent to vms on hosts. - if the isolated method is VXLAN, it is not required to configure trunk switch port for traffic between guest vms. However, you still need to configure the switch port for public traffic (from guest vm or virtual router to the Internet). What's the vlan/vxlan tag of your public ip ranges ? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
