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Thanks, Hiroki and Bob!


Thanks

Changbin


On Tue, Apr 1, 2014 at 1:34 AM, Hiroki Aramaki <h-aramaki at netone.co.jp>wrote:

> GRE and VXLAN packet use 24bit id range. Max number of ID is 1,677,000
>
> and per host max number of subnet is 4094 that is inner VLAN limitation.
>
>
>
> Hiroki Aramaki
>
>
>
> *From:* Robert Kukura [mailto:kukura at noironetworks.com]
> *Sent:* Tuesday, April 01, 2014 11:17 AM
> *To:* openstack at lists.openstack.org
> *Subject:* Re: [Openstack] Limit of tunnel_id_ranges in Neutron
>
>
>
>
>
> On 3/31/14, 1:31 PM, Changbin Liu wrote:
>
> I notice that there are flow_mod flows on OVS which handle 1-to-1
> translations between VLAN IDs and GRE/VXLAN tunnel IDs. Does it mean the
> range of tunnel_ids is limited by VLAN tags?
>
> These local VLAN IDs on br-int are assigned separately on each compute or
> network node by neutron's openvswitch-agent, so you should be able to use
> any number of networks simultaneously in your deployment as long as no more
> than 4094 networks are active at once on any one node.
>
> -Bob
>
>
>
>
> Thanks
>
>
>
> Changbin
>
>
>
> On Sun, Mar 30, 2014 at 5:31 PM, Kyle Mestery <mestery at noironetworks.com>
> wrote:
>
> On Fri, Mar 28, 2014 at 11:39 PM, Changbin Liu <changbin.liu at gmail.com>
> wrote:
>
> Hi All,
>
>
>
> Maybe this is a simple question: is there any limit on "tunnel_id_ranges"
> in Neutron configuration? Say, can I configured it to e.g., "1:10000" if I
> have 10000 tenants in the cloud. I know VLAN is limited to 4094 tags.
>
>
>
> I googled around this issue but found that most commonly it  is configured
> to default "1:1000".
>
>
>
> There should not be a limit here, although the code will verify the tunnel
> ID falls within an allowed range for your tunnel protocol (currently GRE or
> VXLAN).
>
>
>
> Thanks,
>
> Kyle
>
>
>
> Thanks
>
>
>
> Changbin
>
>
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