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I really need some help on quantum.. i've been trying to find a solution 
on an error for many days now, but google has really betrayed me. I hope 
there is someone who can help me: I have quantum-server on my 
cloud-controller node and a network node with quantum-dhcp and l3 agent. 
It is set up according to this guide: 
https://github.com/mseknibilel/OpenStack-Folsom-Install-guide/blob/GRE/2NICs/OpenStack_Folsom_Install_Guide_WebVersion.rst 


In my quantum l3 and dhcp logs i get the following error: Timeout: 
Timeout while waiting on RPC response

I know that the network node establishes the connection to rabbitmq 
because it says so in the rabbitmq-server log...

I hope someone can help me...

This is the log from dhcp-agent on network node:

2013-04-02 10:33:13    DEBUG [amqplib] Closed channel #1
2013-04-02 10:33:13    DEBUG [amqplib] using channel_id: 1
2013-04-02 10:33:13    DEBUG [amqplib] Channel open
2013-04-02 10:33:13    ERROR [quantum.agent.dhcp_agent] Unable to sync 
network state.
Traceback (most recent call last):
   File "/usr/lib/python2.7/dist-packages/quantum/agent/dhcp_agent.py", 
line 112, in sync_state
     active_networks = set(self.plugin_rpc.get_active_networks())
   File "/usr/lib/python2.7/dist-packages/quantum/agent/dhcp_agent.py", 
line 260, in get_active_networks
     topic=self.topic)
   File 
"/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/proxy.py", line 
80, in call
     return rpc.call(context, self._get_topic(topic), msg, timeout)
   File 
"/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/__init__.py", 
line 102, in call
     return _get_impl().call(cfg.CONF, context, topic, msg, timeout)
   File 
"/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/impl_kombu.py", 
line 712, in call
     rpc_amqp.get_connection_pool(conf, Connection))
   File 
"/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/amqp.py", 
line 368, in call
     rv = list(rv)
   File 
"/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/amqp.py", 
line 329, in __iter__
     self.done()
   File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
     self.gen.next()
   File 
"/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/amqp.py", 
line 326, in __iter__
     self._iterator.next()
   File 
"/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/impl_kombu.py", 
line 595, in iterconsume
     yield self.ensure(_error_callback, _consume)
   File 
"/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/impl_kombu.py", 
line 526, in ensure
     error_callback(e)
   File 
"/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/impl_kombu.py", 
line 576, in _error_callback
     raise rpc_common.Timeout()
Timeout: Timeout while waiting on RPC response.

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