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External network Cannot ping vm successfully

asked 2013-08-08 01:42:12 -0500

tardis gravatar image

updated 2013-08-26 00:17:45 -0500

fifieldt gravatar image

My environment is ubuntu 13.04 64bit server and openstack grizzly, single node with OpenVSwitch. Here is my config:


# The loopback network interface
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static

# The primary network interface
auto eth1
iface eth1 inet manual
        up ifconfig $IFACE up
        down ifconfig $IFACE down

auto br-ex
iface br-ex inet static
        # dns-* options are implemented by the resolvconf package, if installed


#Under the database section
sql_connection = mysql://quantumUser:quantumPass@

#Under the OVS section
tenant_network_type = gre
tunnel_id_ranges = 1:1000
integration_bridge = br-int
tunnel_bridge = br-tun
local_ip =
enable_tunneling = True

#Firewall driver for realizing quantum security group function
firewall_driver = quantum.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver

I have two vms, and of floatingip, and of internal ip. In vm, I can ping both floatingip and internal ip succcessfully, but the vm cannot reach external network and either external network. I cannot ping successfully that is the router gateway.

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Please post ovs-vsctl show output

Ashokb gravatar imageAshokb ( 2013-08-09 03:05:31 -0500 )edit

Did you try to set up your eth1 in promiscuous mode ? I think this is needed (yet, I don't know if it will solve the problem). You should add the following line in your /etc/network/interfaces: up ifconfig eth1 promisc

perror gravatar imageperror ( 2013-08-30 04:45:59 -0500 )edit

Check ovs-vsctl show comand, also check security lists. Try to listen interfaces with tcpdump

gagarinq9 gravatar imagegagarinq9 ( 2014-09-15 10:14:03 -0500 )edit

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answered 2014-10-30 06:49:15 -0500

Vinod Pandarinathan gravatar image

Can you check ovs-vsctl show, if your eth0 is attached to br-ex then you can try changing local_ip to the ip address of br-ex and restart the neutron service and l2 agent service.

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Asked: 2013-08-08 01:42:12 -0500

Seen: 533 times

Last updated: Aug 08 '13