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agree with Neil.


thanks
shihanzhang




在 2016-11-01 17:13:54，"Neil Jerram" <neil at tigera.io> 写道：

Hi Zhi Chang,


I believe the answer is that the physical network (aka fabric) should provide routing between those two subnets. This routing between segments is implicit in the idea of a multi-segment network, and is entirely independent of routing between virtual _networks_ (which is done by a Neutron router object connecting those networks).


Hope that helps! 
    Neil 
 


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From: zhi
Sent: Tuesday, 1 November 2016 07:50
To: OpenStack Development Mailing List (not for usage questions)
Reply To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [neutron][routed-network] Host doesn't connected any segments when creating port
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Hi, shihanzhang.


I still have a question about routed network. I have two subnets. One is 10.1.0.0/24 and the other is 10.1.1.0/24. I create two instances in each host.
Such as 10.1.0.10 and 10.1.1.10.


My question is, how does 10.1.0.10 connect to 10.1.1.10 ?  There is no any gateway( 10.1.0.1 and 10.1.1.1 ) in each subnet.




Hope four your reply. ;-)




Thanks
Zhi Chang


2016-11-01 14:31 GMT+08:00 zhi <changzhi1990 at gmail.com>:

Hi, shihanzhang.


Thanks for your advice. Now I can created ports successfully by your advice. 






Thanks
Zhi Chang




2016-11-01 12:50 GMT+08:00 shihanzhang <ayshihanzhang at 126.com>:

Hi Zhi Chang,
Maybe you should add a config option in [ovs] section: bridge_mappings = public:br-ex, physnet1:br-physnet1 to handle the provider network 'physnet1'.


Thanks,
shihanzhang

At 2016-11-01 11:56:33, "zhi" <changzhi1990 at gmail.com> wrote:

hi shihanzhang.


Below is configuration in ml2_conf.ini. Please review it. :)


stack at devstack:~/neutron/neutron$ cat /etc/neutron/plugins/ml2/ml2_conf.ini |grep -v "#"|grep -v ^$
[DEFAULT]
[ml2]
tenant_network_types = vxlan
extension_drivers = port_security
mechanism_drivers = openvswitch,linuxbridge
tenant_network_types = vxlan
[ml2_type_flat]
flat_networks = public,public,
[ml2_type_geneve]
vni_ranges = 1:1000
[ml2_type_gre]
tunnel_id_ranges = 1:1000
[ml2_type_vlan]
network_vlan_ranges = physnet1,physnet2
[ml2_type_vxlan]
vni_ranges = 1:1000
[securitygroup]
firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
[agent]
tunnel_types = vxlan
root_helper_daemon = sudo /usr/local/bin/neutron-rootwrap-daemon /etc/neutron/rootwrap.conf
root_helper = sudo /usr/local/bin/neutron-rootwrap /etc/neutron/rootwrap.conf
[ovs]
datapath_type = system
bridge_mappings = public:br-ex
tunnel_bridge = br-tun
local_ip = 192.168.10.20






Thanks
Zhi Chang


2016-11-01 9:15 GMT+08:00 shihanzhang <ayshihanzhang at 126.com>:

hi Zhi chang,

Could you provide your ml2_conf.ini for ovs agent, I guess the reason is that your ovs-agent on host devstack can't handle the related segment id.


Thanks,
shihanzhang


在 2016-10-31 18:43:36，"zhi" <changzhi1990 at gmail.com> 写道：

Hi, all.


Recently, I watch the OpenStack Summit video named ' Scaling Up OpenStack Networking with Routed Networks '.  Carl and Miguel made this topic.  I learned a lot of your topic. Thanks. 


But I have some questions about the demo in the topic. 


I do some steps according to the topic. 


First, creating two networks like this:


neutron net-create multinet --shared --segments type=dict list=true     provider:physical_network=physnet1,provider:segmentation_id=2016,provider:network_type=vlan     provider:physical_network=physnet2,provider:segmentation_id=2016,provider:network_type=vlan




Second, I get two segments after creating this network. I get these segments by using " openstack network segment list ". 


Third, I create two subnets by these segments by using this command " 


neutron subnet-create --ip_version 4 --name multi-segment1-subnet [net-id] 10.1.0.0/24 --segment_id [segment-id]
neutron subnet-create --ip_version 4 --name multi-segment2-subnet [net-id] 10.1.1.0/24 --segment_id [segment-id]
 "


At last, I want to create a port with host_id. My local environment contains two compute nodes, one is named "devstack"  and the other is "devstack2". So I use this command "  neutron port-create --binding:host_id=devstack [net-id] ". 


Exception happens in neutron server. The exception says "


Host devstack is not connected to any segments on routed provider network [net-id].  It should be connected to one." I can not get this exact point about this exception. 


Why does the "routed network" have relationship with host? 


How they work together between "host info (compute node ?)" and "routed network"?


What should I do if I want to get rid of this exception?




Hope for your reply. Especially Carl and Miguel. ;-)






Many Thanks
Zhi Chang




 


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