Open Stack

Hi James,

Thanks a lot for explaing everything from basic level.

I will surely help us to understand the working.

Everything seems working now.

I will kepp i touch with you.

On Sat, Jun 6, 2015 at 5:43 AM, James Denton <james.denton at rackspace.com>
wrote:

>  Hi Geo,
>
>  When configuring multiple provider bridges, try to think of a 1:1
> relationship between a provider bridge and a physical interface on the host
> that connects to a particular switching layer (in many cases). For example:
>
>  br-eth0 is a bridge containing eth0. Eth0 connects to a switching
> infrastructure behind a firewall.
>
>  br-eth1 is a bridge containing eth1. Eth1 connects to a dedicated backup
> infrastructure.
>
>  There are countless combinations here, and they depend greatly on your
> network infrastructure.
>
>  Now, for each of these bridges I am allowed a single flat network and up
> to ~4,096 vlans. The real number will depend on the physical
> infrastructure, however.
>
> When using OVS, you will create your provider bridges using the 'ovs-vsctl
> add-br' command. You will need to add a physical interface to each of those
> bridges using the 'ovs-vsctl add-port' command. Within the ML2 conf file,
> you will define the provider label to provider bridge mappings. Using my
> examples above, it may look like this:
>
>  externalnet:br-eth0,backupnet:br-eth1
>
>  So when I go to create my network (as an admin) I can specify the
> provider attributes including label name, segmentation id, and network
> type. If I wanted to create a Neutron network that used vlan id 200 on my
> external infrastructure I would use the following attributes:
>
>  Network type: vlan
> Provider label: externalnet
> Segmentation id: 200
>
>  If I create a router and use externalnet as the network in the
> 'router-gateway-set' command, the OVS agent is smart enough to put the flow
> rules that manipulate traffic on both br-int (where my router qg and qr
> ports live) and the br-eth0 bridge thanks to the mappings I defined in the
> ML2 conf file. If I create a network using the backupnet label, the OVS
> agent would put rules on br-int and br-eth1, accordingly.
>
>  Now, network_vlan_ranges is used specifically for tenant network
> allocation. Non-admin users have no visibility into the network type, ids,
> bridges, etc. So, if tenant_network_types is set to vlan,  you can define
> WHICH provider bridge is used and the IDs to be allocated when a tenant
> creates a network. You may have an interface and corresponding bridge
> dedicated to tenant network traffic, so tenantnet:br-eth2, for example. You
> could set the network_vlan_ranges to tenantnet:1000:1999, which would allow
> tenants to create 2000 vlans. When they're gone, tenants cannot create
> add'l networks. Tenant_network_types is an ordered list, so you could have
> vlan,vxlan,gre, for example. When the vlans have been consumed, it moves to
> vxlan then to gre.
>
>  All of the tenant network stuff is abstracted from the user, so they
> have no idea WHAT type of network they've created. Just FYI.
>
>  I apologize for being a bit long winded here. Hope this helps!
>
>  James
>
>
>
>
>
>
> Sent from my iPhone
>
> On Jun 5, 2015, at 2:45 AM, Geo Varghese <gvarghese at aqorn.com> wrote:
>
>    Kevin,
>
>  Thanks for the reply.
>
>  Have added these names of external network in any other configurations
>
> On Fri, Jun 5, 2015 at 4:18 AM, Fox, Kevin M <Kevin.Fox at pnnl.gov> wrote:
>
>>  Those are the 4 external networks. In this cloud, they are all linux
>> bridges.
>>
>> I'm not using vlan tagging on this cloud, so I'm not sure what that would
>> look like.
>>
>> Thanks,
>> Kevin
>>  ------------------------------
>> *From:* Geo Varghese [gvarghese at aqorn.com]
>> *Sent:* Thursday, June 04, 2015 1:02 PM
>>
>> *To:* Fox, Kevin M
>> *Cc:* openstack-operators at lists.openstack.org;
>> openstack at lists.openstack.org
>> *Subject:* Re: Help with multiple external network in openstack
>>
>>    Kevin,
>>
>>  Thanks. Can you please explain these values
>>
>>  pub:br-pub,scz:br-scz,osg:br-osg,mgmt:br-mgmt
>>
>>  These 4 networks are external networks? How you created these bridges.
>>
>>  Can you please specify the value added for
>>
>>  network_vlan_ranges =
>>
>>  Are you using vlan tag fro external network.
>>
>>  Sorry for many questions :)
>>
>>
>>
>>
>>
>> ---------- Forwarded message ----------
>> From: Fox, Kevin M <Kevin.Fox at pnnl.gov>
>> Date: Fri, Jun 5, 2015 at 1:24 AM
>> Subject: RE: Help with multiple external network in openstack
>> To: Geo Varghese <gvarghese at aqorn.com>
>> Cc: "openstack-operators at lists.openstack.org" <
>> openstack-operators at lists.openstack.org>, "openstack at lists.openstack.org"
>> <openstack at lists.openstack.org>
>>
>>
>>  In /etc/neutron/plugins/openvswitch/ovs_neutron_plugin.ini currently we
>> have:
>> bridge_mappings = pub:br-pub,scz:br-scz,osg:br-osg,mgmt:br-mgmt
>>
>> Thanks,
>> Kevin
>>  ------------------------------
>> *From:* Geo Varghese [gvarghese at aqorn.com]
>> *Sent:* Thursday, June 04, 2015 12:29 PM
>> *To:* Fox, Kevin M
>> *Cc:* openstack-operators at lists.openstack.org;
>> openstack at lists.openstack.org
>> *Subject:* Re: Help with multiple external network in openstack
>>
>>    Thanks for the reply Kevin.
>>
>>  Currently bridge mapping is empty string.
>>
>>  As I am not creating br-ex bridge due to multiple external network. Can
>> you please explain what i have to do.
>>
>> On Thursday, June 4, 2015, Fox, Kevin M <Kevin.Fox at pnnl.gov> wrote:
>>
>>> Bridge mappings set in plugin.ini?
>>>
>>> Thanks,
>>> Kevin
>>>
>>> ------------------------------
>>> *From:* Geo Varghese
>>> *Sent:* Thursday, June 04, 2015 6:25:46 AM
>>> *To:* openstack-operators at lists.openstack.org;
>>> openstack at lists.openstack.org
>>> *Subject:* [Openstack-operators] Help with multiple external network in
>>> openstack
>>>
>>>   Hi Team,
>>>
>>>  I need some help to setup multiple external network
>>>
>>> In normal single external network we create *br-ex* bridge and add it
>>> in
>>>
>>>  /etc/neutron/l3_agent.ini
>>>
>>>  As
>>>
>>> external_network_bridge = br-ex
>>>
>>>  It is working for me.
>>>
>>>
>>>  But in the case of multiple external network, this variable to be set
>>> to empty according to the docs. I did that but seems working.
>>>
>>>  Any one please specify whta other changes i have to do to make it
>>> working.
>>>
>>>  Thanks for your support guys.
>>>
>>>
>>>  --
>>> Regards,
>>> Geo Varghese
>>>
>>
>>
>>
>>  --
>>  --
>> Regards,
>> Geo Varghese
>>
>
>
>
> --
>  --
> Regards,
> Geo Varghese
>
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>


-- 
--
Regards,
Geo Varghese
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