<div dir="ltr">Hi,<div> I have set up an all-in-one installation using devstack. When I try to create an instance, I get this error when the plugin tries to create a vlan on the nexus switch</div><div><br></div><div><div>
2013-11-27 16:38:29.752 ^[[00;32mDEBUG ncclient.transport.ssh [^[[00;36m-^[[00;32m] ^[[01;35m^[[00;32mstarting thread (client mode): 0x4509ed0L^[[00m ^[[00;33mfrom (pid=13833) _log /usr/lib/python2.6/site-packages/paramiko/transport.py:1406^[[00m</div>
<div>2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mException: Error reading SSH protocol banner^[[00m</div><div>2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mTraceback (most recent call last):^[[00m</div>
<div>2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1557, in run^[[00m</div><div>2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m self._check_banner()^[[00m</div>
<div>2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1683, in _check_banner^[[00m</div>
<div>2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m raise SSHException('Error reading SSH protocol banner' + str(x))^[[00m</div><div>2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m<font color="#0000ff"><b>SSHException: Error reading SSH protocol banner</b></font>^[[00m</div>
<div>2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m^[[00m</div><div>2013-11-27 16:38:29.754 ^[[01;31mERROR neutron.plugins.ml2.managers [^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone None^[[01;31m] ^[[01;35m^[[01;31mMechanism driver 'cisco_nexus' failed in update_port_postcommit^[[00m</div>
<div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00mTraceback (most recent call last):</div><div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 156, in _call_on_drivers</div>
<div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m getattr(driver.obj, method_name)(context)</div><div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 159, in update_port_postcommit</div>
<div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._invoke_nexus_on_port_event(context)</div><div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 149, in _invoke_nexus_on_port_event</div>
<div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._manage_port(vlan_name, vlan_id, host_id, instance_id)</div><div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 114, in _manage_port</div>
<div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m vlan_name, port_id)</div><div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 194, in create_and_trunk_vlan</div>
<div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self.create_vlan(nexus_host, vlan_id, vlan_name)</div><div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 131, in create_vlan</div>
<div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._edit_config(nexus_host, target='running', config=confstr)</div><div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 68, in _edit_config</div>
<div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m mgr = self.nxos_connect(nexus_host)</div><div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 114, in nxos_connect</div>
<div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m raise cexc.NexusConnectFailed(nexus_host=nexus_host, exc=e)</div><div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m<b><font color="#0000ff">NexusConnectFailed: Unable to connect to Nexus 172.25.31.82. Reason: Negotiation failed.</font></b></div>
<div>^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m</div><div>2013-11-27 16:38:29.755 ^[[01;31mERROR neutron.openstack.common.rpc.amqp [^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone None^[[01;31m] ^[[01;35m^[[01;31mException during message handling^[[00m</div>
<div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00mTraceback (most recent call last):</div><div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in _process_data</div>
<div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m **args)</div><div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/common/rpc.py", line 44, in dispatch</div>
<div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m neutron_ctxt, version, method, namespace, **kwargs)</div><div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line 172, in dispatch</div>
<div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m result = getattr(proxyobj, method)(ctxt, **kwargs)</div><div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py", line 192, in update_device_up</div>
<div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m q_const.PORT_STATUS_ACTIVE)</div><div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line 690, in update_port_status</div>
<div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self.mechanism_manager.update_port_postcommit(mech_context)</div><div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 395, in update_port_postcommit</div>
<div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self._call_on_drivers("update_port_postcommit", context)</div><div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 167, in _call_on_drivers</div>
<div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m method=method_name</div><div>^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00mMechanismDriverError: update_port_postcommit failed.</div>
</div><div><br></div><div>Also now when I try to manually ssh to the switch, I get this error</div><div><br></div><div><div>[root@openstackcoi logs]# ssh 172.25.31.82 -l admin</div><div><font color="#0000ff"><b>ssh_exchange_identification: Connection closed by remote host</b></font></div>
</div><div>
<font color="#0000ff"><b><br></b></font></div><div><font color="#000000">This is my ml2_conf_cisco.ini</font></div><div><font color="#000000"><br></font></div><div><div><font color="#000000">[ml2_mech_cisco_nexus:172.25.31.82]</font></div>
<div><font color="#000000">openstackcoi=1/1</font></div><div><font color="#000000">ssh_port=22</font></div><div><font color="#000000">username=admin</font></div><div><font color="#000000">password=*******</font></div><div>
<font color="#000000"><br></font></div><div><font color="#000000">Regards,</font></div><div><font color="#000000">Sayaji</font></div><div>
<br></div></div><div><br></div><div><br></div></div>