I configured one network node and one compute node on a Xen based server. When a VM is bring up, it cannot get a IP address from DHCP. I tried to set its IP address manually and ping the gateway, of course, all packets are timed out.

In computer node, I run tcpdump to capture packets. For br-int, I do captured packets from client

xxxx@os-compute:~$ sudo tcpdump -i br-int

tcpdump: WARNING: br-int: no IPv4 address assigned

tcpdump: verbose output suppressed, use -v or -vv for full protocol decode

listening on br-int, link-type EN10MB (Ethernet), capture size 65535 bytes

22:48:56.730834 ARP, Request who-has 50.50.1.1 tell http://ge2-0.drr02.snpr.wi.frontiernet.net , length 28

However, in br-tun, there is no traffic.

Anyone can help me on this? Thanks.

The configuration of OpenVSwitch is listed below:

xxxx@os-compute:~$ sudo ovs-vsctl show

2918272c-fa27-48f2-938c-58915f431c49

Bridge br-int

    Port br-int

        Interface br-int

            type: internal

    Port "eth3"

        Interface "eth3"

    Port patch-tun

        Interface patch-tun

            type: patch

            options: {peer=patch-int}

Bridge br-tun

    Port "vxlan-1"

        Interface "vxlan-1"

            type: vxlan

            options: {in_key=flow, local_ip="10.3.0.16", out_key=flow, remote_ip="10.3.0.15"}

    Port br-tun

        Interface br-tun

            type: internal

    Port patch-int

        Interface patch-int

            type: patch

            options: {peer=patch-tun}

ovs_version: "1.10.2"