I want to know is there any conflict and inconsistency between my tenant network vlan and infrastructure vlan?

asked 2015-10-14 00:34:27 -0500

sara-kh gravatar image

Hi every one; I have installed openstack on 3 servers. One for controller and network the remaining two servers for computing. I used openstack neutron for networking with linux bridging plugin. The tenant network type is vlan and external network type is flat. I have installed openstack remotely and unable to modify physical switches and routers. The openstack use one vlan in datacenter with id 20 . The problem is that my two instance reside on two physical compute node cannot ping each other !!. I have checked the security rules and these two instances belong to one logical vlan. I want to know is there any conflict and inconsistency between my tenant network vlan and infrastructure vlan? The logical vlan id is 30 and datacenter vlan is 20 . Thank you

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Comments

You might be having the problem that nested VLANs increase the MTU above the usual limit of 1500 bytes. Such as case is documented in http://docs.openstack.org/openstack-o..., though Nova-Network is used here.

Bernd Bausch gravatar imageBernd Bausch ( 2015-10-16 00:46:25 -0500 )edit

Thank you Bernd , I have changed the MTU size but it didn't work. I have to use openstack neutron, I want to know is there any way to have vlan for tenant network without changing the physical switch config?

sara-kh gravatar imagesara-kh ( 2015-10-26 06:29:49 -0500 )edit