You also need to change the MTU of either instance or of the network node. Check the mailthread https://lists.launchpad.net/openstack/msg24056.html for further details. -Regards Rahul On 8/15/13, Di DX Xu <xudi at cn.ibm.com> wrote: > > > Deal all, > > I followed this instruction - > https://github.com/mseknibilel/OpenStack-Grizzly-Install-Guide/blob/OVS_MultiNode/OpenStack_Grizzly_Install_Guide.rst > and finished Grizzly installation on ubuntu 12.04 (3 nodes), and followed > this instruction - > https://github.com/mseknibilel/OpenStack-Folsom-Install-guide/blob/master/OpenStack_Folsom_Install_Guide_WebVersion.rst > for the network configuration using OpenVSwitch and VLAN mode. > > The VM can be associated with a floating IP successfully so I can ping some > external IPs from the VM, e.g., www.baidu.com, but when I try to get the > web page using "wget www.baidu.com", it will stuck: > > $ wget www.baidu.com > --2013-08-15 05:41:55-- http://www.baidu.com/ > Resolving www.baidu.com (www.baidu.com)... 115.239.210.27, 115.239.210.26 > Connecting to www.baidu.com (www.baidu.com)|115.239.210.27|:80... > connected. > HTTP request sent, awaiting response... > > It's weird as the external ip is pingable and the http connection is > established but can not get the http response... > > Cloud anybody help on this? Many thanks! > > Scott