[ovs-discuss] Can't enable gre/vxlan for ovs

Alex Wang alexw at nicira.com
Mon Jan 6 17:34:18 UTC 2014


Sorry for the delayed reply, just back from vacation,

Could you run `modinfo openvswitch` and make sure you have the 1.11 kernel
module installed?

Also, here is a link for installing it in CentOS6.4 :
http://n40lab.wordpress.com/2013/06/03/centos-6-4-openvswitch-installation/

Thanks,
Alex Wang,


On Wed, Jan 1, 2014 at 5:19 PM, Li, Chen <chen.li at intel.com> wrote:

>  Sorry, I’m really new to openvswitch.
>
> Not very clear what to do.
>
>
>
> I don’t have the error message.
>
> And I’m working on CentOS 6.4, kernel
> 2.6.32-358.123.2.openstack.el6.x86_64.
>
> I installed openvswitch using command “yum install openvswitch”.
>
> The version I’m using is openvswitch.x86_64      1.11.0_8ce28d-1.el6ost.
>
> My repos is
> http://repos.fedorapeople.org/repos/openstack/openstack-havana/epel-6/
>
>
>
> Thanks.
>
> -chen
>
>
>
> *From:* Alex Wang [mailto:alexw at nicira.com]
> *Sent:* Tuesday, December 31, 2013 2:38 AM
> *To:* Li, Chen
> *Cc:* discuss at openvswitch.org
> *Subject:* Re: [ovs-discuss] Can't enable gre/vxlan for ovs
>
>
>
> Hey Chen,
>
>
>
> Just learned that there is change of way of kernel module installation
> between branch-1.11 and branch-2.0.
>
>
>
> Could you confirm if you have the following error message in 'dmesg'
> output?
>
> [  172.574886] openvswitch: Open vSwitch switching datapath 1.11.1, built
> Dec 30 2013 09:43:15
>
> [  172.575046] openvswitch: cannot register gre protocol handler
>
>
>
> This will prevent the gre module from functioning.  Also, please refer to
> the INSTALL file for the correct way to install kernel module.
>
>
>
> Thanks,
>
> Alex Wang,
>
>
>
> On Mon, Dec 30, 2013 at 9:51 AM, Alex Wang <alexw at nicira.com> wrote:
>
> Hey Chen,
>
>
>
> Thanks for reporting this.  Seems to be a bug.
>
>
>
> I can reproduce it on my machine.  And ovs-dpctl show
>
> did not show the tunnel port,
>
>
>
> root at promg-2n-a-dhcp85:~# ovs-dpctl show
>
> system at ovs-system:
>
>         lookups: hit:53 missed:4 lost:0
>
>         flows: 1
>
>         port 0: ovs-system (internal)
>
>         port 1: br0 (internal)
>
>
>
>
>
> We'll investigate & fix it.
>
>
>
> Thanks,
>
> Alex Wang,
>
>
>
> On Sun, Dec 29, 2013 at 11:54 PM, Li, Chen <chen.li at intel.com> wrote:
>
>   Hi list,
>
>
>
> I’m trying to enable gre/vxlan for Openstack, but unfortunately, I get
> failed. L
>
>
>
> So, I try to easy my job to just enable gre/vxlan on openvswitch by hand.
>
> I followed steps:
> http://networkstatic.net/configuring-vxlan-and-gre-tunnels-on-openvswitch/#!prettyPhoto
>
> But, the network is still not reachable……
>
>
>
> While I’m trying to ping another Node, the action in ovs is drop:
>
> on Node 1:
>
> 1.       Run command : ping 10.1.2.11
>
> 2.       Run command : ovs-dpctl dump-flows
>
> in_port(1),eth(src=fe:34:0f:f9:16:48,dst=ff:ff:ff:ff:ff:ff),eth_type(0x0806),arp(sip=10.1.2.10,tip=10.1.2.11,op=1,sha=fe:34:0f:f9:16:48,tha=00:00:00:00:00:00),
> packets:5, bytes:210, used:0.647s, actions:*drop*
>
>
>
> Hope you guys can give me some advice about this.
>
>
>
> Thanks.
>
> -chen
>
>
>
> Here is my set-up’s status:
>
> *Node 1:*
>
> ifconfig
>
> br-int    Link encap:Ethernet  HWaddr FE:34:0F:F9:16:48
>
>           inet addr:10.1.2.10  Bcast:10.1.2.255  Mask:255.255.255.0
>
>           inet6 addr: fe80::1038:7dff:fec0:c4f1/64 Scope:Link
>
>           UP BROADCAST RUNNING  MTU:1500  Metric:1
>
>           RX packets:393799 errors:0 dropped:0 overruns:0 frame:0
>
>           TX packets:30 errors:0 dropped:0 overruns:0 carrier:0
>
>           collisions:0 txqueuelen:0
>
>           RX bytes:75528724 (72.0 MiB)  TX bytes:1476 (1.4 KiB)
>
>
>
> eth0      Link encap:Ethernet  HWaddr 00:25:90:79:EE:58
>
>           inet addr:192.168.11.102  Bcast:192.168.255.255  Mask:255.255.0.0
>
>           inet6 addr: fe80::225:90ff:fe79:ee58/64 Scope:Link
>
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>
>           RX packets:47704498 errors:0 dropped:0 overruns:0 frame:0
>
>           TX packets:7581995 errors:0 dropped:0 overruns:0 carrier:0
>
>           collisions:0 txqueuelen:1000
>
>           RX bytes:8436995106 (7.8 GiB)  TX bytes:2025995928 (1.8 GiB)
>
>           Memory:dfd20000-dfd40000
>
>
>
> lo        Link encap:Local Loopback
>
>           inet addr:127.0.0.1  Mask:255.0.0.0
>
>           inet6 addr: ::1/128 Scope:Host
>
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>
>           RX packets:57 errors:0 dropped:0 overruns:0 frame:0
>
>           TX packets:57 errors:0 dropped:0 overruns:0 carrier:0
>
>           collisions:0 txqueuelen:0
>
>           RX bytes:5022 (4.9 KiB)  TX bytes:5022 (4.9 KiB)
>
>
>
> ovs-vsctl show
>
> 4ab902f3-5d19-46b9-bd24-0ad080540613
>
>     Bridge br-int
>
>         Port "gre1"
>
>             Interface "gre1"
>
>                 type: gre
>
>                 options: {remotr_ip="192.168.11.103"}
>
>         Port br-int
>
>             Interface br-int
>
>                 type: internal
>
> ovs_version: "1.11.0"
>
>
>
> ovs-ofctl dump-flows br-int
>
> NXST_FLOW reply (xid=0x4):
>
> cookie=0x0, duration=33.562s, table=0, n_packets=0, n_bytes=0,
> idle_age=33, priority=0 actions=NORMAL
>
>
>
> *Node 2:*
>
> ifconfig
>
> br-int    Link encap:Ethernet  HWaddr F6:B2:FB:FA:4F:40
>
>           inet addr:10.1.2.11  Bcast:10.1.2.255  Mask:255.255.255.0
>
>           inet6 addr: fe80::874:14ff:fe1c:6f2d/64 Scope:Link
>
>           UP BROADCAST RUNNING  MTU:1500  Metric:1
>
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>
>           TX packets:60 errors:0 dropped:0 overruns:0 carrier:0
>
>           collisions:0 txqueuelen:0
>
>           RX bytes:0 (0.0 b)  TX bytes:2736 (2.6 KiB)
>
>
>
> eth0      Link encap:Ethernet  HWaddr 00:25:90:79:D3:F4
>
>           inet addr:192.168.11.103  Bcast:192.168.255.255  Mask:255.255.0.0
>
>           inet6 addr: fe80::225:90ff:fe79:d3f4/64 Scope:Link
>
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>
>           RX packets:50628891 errors:0 dropped:0 overruns:0 frame:0
>
>           TX packets:10316125 errors:0 dropped:0 overruns:0 carrier:0
>
>           collisions:0 txqueuelen:1000
>
>           RX bytes:9826925316 (9.1 GiB)  TX bytes:2822135225 (2.6 GiB)
>
>           Memory:dfd20000-dfd40000
>
>
>
> lo        Link encap:Local Loopback
>
>           inet addr:127.0.0.1  Mask:255.0.0.0
>
>           inet6 addr: ::1/128 Scope:Host
>
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>
>           RX packets:1391 errors:0 dropped:0 overruns:0 frame:0
>
>           TX packets:1391 errors:0 dropped:0 overruns:0 carrier:0
>
>           collisions:0 txqueuelen:0
>
>           RX bytes:154486 (150.8 KiB)  TX bytes:154486 (150.8 KiB)
>
>
>
> ovs-vsctl show
>
> 218f9b54-b3e8-47ac-8563-58ff91ca57e9
>
>     Bridge br-int
>
>         Port "gre1"
>
>             Interface "gre1"
>
>                 type: gre
>
>                 options: {remotr_ip="192.168.11.102"}
>
>         Port br-int
>
>             Interface br-int
>
>                 type: internal
>
>     ovs_version: "1.11.0"
>
>
>
> ovs-ofctl dump-flows br-int
>
> NXST_FLOW reply (xid=0x4):
>
> cookie=0x0, duration=7014.936s, table=0, n_packets=60, n_bytes=2736,
> idle_age=6412, priority=0 actions=NORMAL
>
>
>
>
>
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>
>
>
>
>
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