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Message #24087
Re: VM Issues on Grizzly Install on Ubuntu 12.04
Hi Farhan and Rahul,
I think this issue would only be seen by people using the OVS plugin in a multinode setup with GRE tunnels and doing more than simple ping and ssh access. It seems some sites like github.com are either ignoring or not receiving the "destination unreachable - need fragmentation" ICMP to prevent DoS attackes.
Yes - cloud-init/metadata could run a script that sets the mtu.
An alternative workaound is to increase the mtu to 1546 on the interfaces on the network node and the computes nodes that have the GRE tunnel endpoint IPs. Then the instances can stay at their default 1500. This may be a more practical way as long as all the hardware between the endpoints can cope with this mtu size.
I can't say if this is a bug yet, but it needs to be documented.
Darragh.
>________________________________
> From: Farhan Patwa <Farhan.Patwa@xxxxxxxx>
>To: Rahul Sharma <rahulsharmaait@xxxxxxxxx>; Darragh O'Reilly <dara2002-openstack@xxxxxxxxx>
>Cc: OpenStack Maillist <openstack@xxxxxxxxxxxxxxxxxxx>
>Sent: Thursday, 30 May 2013, 15:54
>Subject: Re: [Openstack] VM Issues on Grizzly Install on Ubuntu 12.04
>
>
>
>Hi Darragh,
>Thanks a lot for your suggestion. It solved the issue for me also.
>I also had the same issue on a Folsom install done by following the user guide:
>http://docs.openstack.org/folsom/basic-install/content/index.html
>At that time I thought it was an issue with my setup and so I decided to upgrade to Grizzly.
>
>
>Wouldn't this be an issue that everyone doing a plain openstack install would face? Its hard to imagine why it has not been noticed before.
>
>
>Is there a way I can add the changing of the MTU to the meta data so that it automatically applies to new Vms?
>
>
>Thanks again Darragh for all your time and help.
>
>
>-Farhan.
>
>From: Rahul Sharma <rahulsharmaait@xxxxxxxxx>
>Date: Thursday, May 30, 2013 12:57 AM
>To: Darragh O'Reilly <dara2002-openstack@xxxxxxxxx>
>Cc: Farhan Patwa <Farhan.Patwa@xxxxxxxx>, OpenStack Maillist <openstack@xxxxxxxxxxxxxxxxxxx>
>Subject: Re: [Openstack] VM Issues on Grizzly Install on Ubuntu 12.04
>
>
>
>Hi Darragh,
>
>Even I am facing the same issue of request getting timed out and even updates getting hanged up for very long time. I followed your step of reducing the MTU size from 1500 to 1454 and now everything works fine. I tried this on Ubuntu instances.
>
>This seems to be an issue with the Grizzly release. I had already started email-thread earlier for this but was unable to find the root cause. Here is the link to it:-
>
>https://lists.launchpad.net/openstack/msg23993.html
>
>
>Thank you for your suggestion of reducing the MTU size as it solved the problem. You must file a bug for this so that this issue can be tracked.
>
>
>Thanks and Regards
>Rahul Sharma
>
>
>
>
>On Thu, May 30, 2013 at 2:23 AM, Darragh O'Reilly <dara2002-openstack@xxxxxxxxx> wrote:
>
>Hi Farhan,
>>
>>I was able to reproduce this with curl from the cirros 0.3.1 that supports ssl.
>>
>>cirros$ curl -L github.com # -L follow redirects
>>
>>it just hangs and I get these ICMPs on the netnode's physical nic.
>>
>>20:33:10.811485 IP (tos 0xc0, ttl 63, id 13647, offset 0, flags [none], proto ICMP (1), length 576)
>> 192.168.101.2 > 204.232.175.90: ICMP 192.168.101.2 unreachable - need to frag (mtu 1454), length 556
>>IP (tos 0x0, ttl 51, id 54729, offset 0, flags [DF], proto TCP (6), length 1500)
>> 204.232.175.90.443 > 192.168.101.2.41237: Flags [.], seq 1:1449, ack 225, win 7, options [nop,nop,TS val 4208725487 ecr 171322], length 1448
>>
>>So I reduced the mtu from the default 1500 to 1454 on the instance and now 'curl -L github.com' works
>>
>>cirros$ sudo ip link set mtu 1454 dev eth0
>>
>>Will need to look into this more. Maybe to do with the GRE tunnels (+~20bytes?) or iptables. Anyway try reducing the mtu for now.
>>
>>
>>Darragh.
>>
>>
>>----- Original Message -----
>>> From: Farhan Patwa <Farhan.Patwa@xxxxxxxx>
>>
>>> To: Darragh O'Reilly <dara2002-openstack@xxxxxxxxx>; OpenStack Maillist <openstack@xxxxxxxxxxxxxxxxxxx>
>>> Cc:
>>
>>> Sent: Wednesday, 29 May 2013, 18:14
>>> Subject: Re: [Openstack] VM Issues on Grizzly Install on Ubuntu 12.04
>>>
>>> Hi Darragh,
>>> Thank you soo Much! That was it! Now I am able to connect to the VM with
>>> no issues.
>>>
>>> But I am back to another network issue I had when I had Folsom installed
>>> on the same setup.
>>> I would really appreciate if you can provide any pointers here.
>>>
>>>
>>> I able to spawn VM get IP, set floating IP and now am trying to do some
>>> development within the VM.
>>> I am unable to connect to certain sites and ports:
>>> git clone https://github.com/openstack-dev/devstack.git - <-- This just
>>> times out.
>>>
>>> ###########################################################################
>>> #############
>>> This is what works:
>>> Wget google.com
>>> Wget openstack.com
>>> ###########################################################################
>>> #############
>>> This is what hangs and times out:
>>>
>>> Wget yahoo.com
>>> Wget paypal.com
>>> Wget facebook.com
>>> Wget github.com
>>> ubuntu@fpatwa-1:~$ wget github.com
>>> --2013-05-10 19:08:19-- http://github.com/
>>> Resolving github.com (github.com)... 204.232.175.90
>>> Connecting to github.com (github.com)|204.232.175.90|:80... connected.
>>> HTTP request sent, awaiting response... 301 Moved Permanently
>>> Location: https://github.com/ [following]
>>> --2013-05-10 19:08:20-- https://github.com/
>>> Connecting to github.com (github.com)|204.232.175.90|:443... connected.
>>>
>>> ###########################################################################
>>> #############
>>>
>>> The same commands works on the network node.
>>>
>>>
>>> The pattern that I can see is that any SSL website fails (port 443) but
>>> then something like yahoo fails also and its at port 80.
>>>
>>>
>>> Here are my security rules:
>>> +-------------+-----------+---------+-----------+--------------+
>>> | IP Protocol | From Port | To Port | IP Range | Source Group |
>>> +-------------+-----------+---------+-----------+--------------+
>>> | icmp | -1 | -1 | 0.0.0.0/0 | |
>>> | tcp | 1 | 65535 | 0.0.0.0/0 | |
>>> | tcp | 22 | 22 | 0.0.0.0/0 | |
>>> | udp | 1 | 65535 | 0.0.0.0/0 | |
>>> +-------------+-----------+---------+-----------+--------------+
>>>
>>>
>>>
>>> I have messed around with all kinds of combinations of security rules but
>>> no luck so far.
>>>
>>> Thanks,
>>>
>>> -Farhan.
>>>
>>>
>>>
>>>
>>> On 5/28/13 3:28 PM, "Darragh O'Reilly"
>>> <dara2002-openstack@xxxxxxxxx>
>>> wrote:
>>>
>>>> Hi,
>>>>
>>>> the ping error "connect: Network is unreachable" means a route
>>> could not
>>>> be found.
>>>>
>>>> The gateway 10.245.124.253 for the external subnet is not in the subnet
>>>> CIDR 10.245.124.64/26.
>>>>
>>>>
>>>> So I guess a default route was not setup here:
>>>> netnode$ ip netns exec <router ns> route -n
>>>>
>>>> You will need to create the subnet with a CIDR that includes the gateway
>>>> ip - something like this:
>>>> quantum subnet-create <ext-net-id> 10.245.124.192/26 --gateway
>>>> 10.245.124.253 --enable_dhcp False
>>>>
>>>> Darragh.
>>>>
>>>>
>>>> ----- Original Message -----
>>>>> From: Farhan Patwa <Farhan.Patwa@xxxxxxxx>
>>>>> To: Darragh OReilly <darragh.oreilly@xxxxxxxxx>; OpenStack
>>> Maillist
>>>>> <openstack@xxxxxxxxxxxxxxxxxxx>
>>>>> Cc:
>>>>> Sent: Tuesday, 28 May 2013, 19:52
>>>>> Subject: Re: [Openstack] VM Issues on Grizzly Install on Ubuntu 12.04
>>>>>
>>>>> Hi Darragh,
>>>>> Thanks a lot for your reply and suggestions.
>>>>> I am not able to ping the gateway ip from the namespace.
>>>>> Also eth0 is up but br-ex has unknown state?
>>>>>
>>>>> #########################################################################
>>>>> ##
>>>>> #######################
>>>>>
>>>>> root@openstack-2:~# ip link
>>>>> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state
>>> UNKNOWN
>>>>> link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
>>>>> 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq
>>> state UP
>>>>> qlen
>>>>> 1000
>>>>> link/ether 78:2b:cb:27:1f:c8 brd ff:ff:ff:ff:ff:ff
>>>>> 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq
>>> state UP
>>>>> qlen
>>>>> 1000
>>>>> link/ether 78:2b:cb:27:1f:c9 brd ff:ff:ff:ff:ff:ff
>>>>> 4: br-int: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
>>> noqueue
>>>>> state
>>>>> UNKNOWN
>>>>> link/ether f2:3b:f7:1b:b0:46 brd ff:ff:ff:ff:ff:ff
>>>>> 6: br-ex: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
>>> noqueue state
>>>>> UNKNOWN
>>>>> link/ether 78:2b:cb:27:1f:c8 brd ff:ff:ff:ff:ff:ff
>>>>> 32: br-tun: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
>>> noqueue
>>>>> state
>>>>> UNKNOWN
>>>>> link/ether 7e:6c:65:0f:c9:43 brd ff:ff:ff:ff:ff:ff
>>>>>
>>>>> #########################################################################
>>>>> ##
>>>>> #######################
>>>>>
>>>>>
>>>>> Here is the result of the tcpdump as ping is being done:
>>>>>
>>>>>
>>>>> #########################################################################
>>>>> ##
>>>>> #######################
>>>>>
>>>>> root@openstack-2:~# ip netns exec
>>>>> qrouter-32f35fb4-f9f1-4817-8818-fff832f73810 ping -c1 10.245.124.253
>>>>> connect: Network is unreachable
>>>>>
>>>>> root@openstack-2:~# tcpdump -nei eth0
>>>>> tcpdump: WARNING: eth0: no IPv4 address assigned
>>>>> tcpdump: verbose output suppressed, use -v or -vv for full protocol
>>>>> decode
>>>>> listening on eth0, link-type EN10MB (Ethernet), capture size 65535
>>> bytes
>>>>> 13:46:31.399055 00:26:88:7a:40:87 > 01:80:c2:00:00:00, 802.3, length
>>> 60:
>>>>> LLC, dsap STP (0x42) Individual, ssap STP (0x42) Command, ctrl 0x03:
>>> STP
>>>>> 802.1w, Rapid STP, Flags [Proposal], bridge-id
>>>>> 8000.00:26:88:7a:40:81.8205, length 43
>>>>> 13:46:33.259195 c2:35:07:e7:b0:10 > ff:ff:ff:ff:ff:ff, ethertype ARP
>>>>> (0x0806), length 60: Reply 10.245.0.10 is-at c2:35:07:e7:b0:10, length
>>>>> 46
>>>>> 13:46:33.313988 00:26:88:7a:40:87 > 01:80:c2:00:00:00, 802.3, length
>>> 60:
>>>>> LLC, dsap STP (0x42) Individual, ssap STP (0x42) Command, ctrl 0x03:
>>> STP
>>>>> 802.1w, Rapid STP, Flags [Proposal], bridge-id
>>>>> 8000.00:26:88:7a:40:81.8205, length 43
>>>>>
>>>>> #########################################################################
>>>>> ##
>>>>> #######################
>>>>>
>>>>>
>>>>>
>>>>> The other information that you wanted is:
>>>>>
>>>>> #########################################################################
>>>>> ##
>>>>> #######################
>>>>>
>>>>> root@openstack-2:~# ip link
>>>>> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state
>>> UNKNOWN
>>>>> link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
>>>>> 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq
>>> state UP
>>>>> qlen
>>>>> 1000
>>>>> link/ether 78:2b:cb:27:1f:c8 brd ff:ff:ff:ff:ff:ff
>>>>> 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq
>>> state UP
>>>>> qlen
>>>>> 1000
>>>>> link/ether 78:2b:cb:27:1f:c9 brd ff:ff:ff:ff:ff:ff
>>>>> 4: br-int: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
>>> noqueue
>>>>> state
>>>>> UNKNOWN
>>>>> link/ether f2:3b:f7:1b:b0:46 brd ff:ff:ff:ff:ff:ff
>>>>> 6: br-ex: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
>>> noqueue state
>>>>> UNKNOWN
>>>>> link/ether 78:2b:cb:27:1f:c8 brd ff:ff:ff:ff:ff:ff
>>>>> 32: br-tun: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
>>> noqueue
>>>>> state
>>>>> UNKNOWN
>>>>> link/ether 7e:6c:65:0f:c9:43 brd ff:ff:ff:ff:ff:ff
>>>>>
>>>>> #########################################################################
>>>>> ##
>>>>> #######################
>>>>>
>>>>> root@openstack-2:~# ip netns exec
>>>>> qrouter-32f35fb4-f9f1-4817-8818-fff832f73810 ip address
>>>>> 25: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state
>>> UNKNOWN
>>>>> link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
>>>>> inet 127.0.0.1/8 scope host lo
>>>>> inet6 ::1/128 scope host
>>>>> valid_lft forever preferred_lft forever
>>>>> 39: qr-eebfe1cb-0f: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500
>>> qdisc
>>>>> noqueue state UNKNOWN
>>>>> link/ether fa:16:3e:08:16:19 brd ff:ff:ff:ff:ff:ff
>>>>> inet 50.50.1.1/24 brd 50.50.1.255 scope global qr-eebfe1cb-0f
>>>>> inet6 fe80::f816:3eff:fe08:1619/64 scope link
>>>>> valid_lft forever preferred_lft forever
>>>>> 40: qg-910fef3b-cb: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500
>>> qdisc
>>>>> noqueue state UNKNOWN
>>>>> link/ether fa:16:3e:e3:d5:fa brd ff:ff:ff:ff:ff:ff
>>>>> inet 10.245.124.65/26 brd 10.245.124.127 scope global
>>> qg-910fef3b-cb
>>>>> inet 10.245.124.67/32 brd 10.245.124.67 scope global qg-910fef3b-cb
>>>>> inet6 fe80::f816:3eff:fee3:d5fa/64 scope link
>>>>> valid_lft forever preferred_lft forever
>>>>>
>>>>> #########################################################################
>>>>> ##
>>>>> #######################
>>>>>
>>>>> root@openstack-2:~# quantum net-show
>>>>> 37d27ee8-36a9-4cdb-9966-9b5571526b41
>>>>> +---------------------------+--------------------------------------+
>>>>> | Field | Value |
>>>>> +---------------------------+--------------------------------------+
>>>>> | admin_state_up | True |
>>>>> | id | 37d27ee8-36a9-4cdb-9966-9b5571526b41 |
>>>>> | name | ext_net |
>>>>> | provider:network_type | gre |
>>>>> | provider:physical_network | |
>>>>> | provider:segmentation_id | 1 |
>>>>> | router:external | True |
>>>>> | shared | True |
>>>>> | status | ACTIVE |
>>>>> | subnets | dd6f08f5-bfbd-4bdb-b9e4-c5ca065f3750 |
>>>>> | tenant_id | 2990df1bd46c4dda915b43558d591a2f |
>>>>> +---------------------------+--------------------------------------+
>>>>>
>>>>> #########################################################################
>>>>> ##
>>>>> #######################
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> root@openstack-2:~# quantum subnet-show
>>>>> dd6f08f5-bfbd-4bdb-b9e4-c5ca065f3750
>>>>>
>>>>> +------------------+-----------------------------------------------------
>>>>> +
>>>>> | Field | Value
>>>>> |
>>>>>
>>>>> +------------------+-----------------------------------------------------
>>>>> +
>>>>> | allocation_pools | {"start": "10.245.124.65",
>>>>> "end": "10.245.124.126"} |
>>>>> | cidr | 10.245.124.64/26
>>>>> |
>>>>> | dns_nameservers | 10.245.0.10
>>>>> |
>>>>> | enable_dhcp | False
>>>>> |
>>>>> | gateway_ip | 10.245.124.253
>>>>> |
>>>>> | host_routes |
>>>>> |
>>>>> | id | dd6f08f5-bfbd-4bdb-b9e4-c5ca065f3750
>>>>> |
>>>>> | ip_version | 4
>>>>> |
>>>>> | name |
>>>>> |
>>>>> | network_id | 37d27ee8-36a9-4cdb-9966-9b5571526b41
>>>>> |
>>>>> | tenant_id | 2990df1bd46c4dda915b43558d591a2f
>>>>> |
>>>>>
>>>>> +------------------+-----------------------------------------------------
>>>>> +
>>>>>
>>>>> #########################################################################
>>>>> ##
>>>>> #######################
>>>>>
>>>>>
>>>>>
>>>>> Thanks,
>>>>>
>>>>> -Farhan.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On 5/27/13 4:08 AM, "Darragh OReilly"
>>>>> <darragh.oreilly@xxxxxxxxx> wrote:
>>>>>
>>>>>>
>>>>>> I'd check the external network config first.
>>>>>>
>>>>>> You should be able to ping the external subnet's gateway from
>>> the
>>>>>> router
>>>>>> namespace.
>>>>>> This gateway should correspond to some real external
>>> gateway/router.
>>>>>>
>>>>>> quantum subnet-show <ext sub id> -c gateway_ip #
>>> 10.245.124.1 ?
>>>>>> ip netns exec <router-ns> ping -c1 <ext sub gateway>
>>>>>>
>>>>>> If that is not working use tcpdump as you ping. Br-ex is using
>>> eth0, is
>>>>>> eth0 up? tcpdump -nei eth0
>>>>>>
>>>>>>
>>>>>> If you are still having problems, post the above output and the
>>>>>> following:
>>>>>>
>>>>>> # network node
>>>>>> ip link
>>>>>> ip netns exec <router-ns> ip address
>>>>>>
>>>>>> quantum net-show <uuid of external net>
>>>>>> quantum subnet-show <uuid of external subnet>
>>>>>>
>>>>>>
>>>>>>> ________________________________
>>>>>>> From: Farhan Patwa <Farhan.Patwa@xxxxxxxx>
>>>>>>> To: OpenStack Maillist <openstack@xxxxxxxxxxxxxxxxxxx>
>>>>>>> Sent: Friday, 24 May 2013, 20:28
>>>>>>> Subject: [Openstack] VM Issues on Grizzly Install on Ubuntu
>>> 12.04
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Hello,
>>>>>>> I followed the following guide to install Grizzly release on
>>> 3-node
>>>>>>> setup.
>>>>>>>
>>>>>>> http://docs.openstack.org/grizzly/basic-install/apt/content/basic-insta
>>>>>>> ll
>>>>>>> _intro.html
>>>>>>>
>>>>>>>
>>>>>>> I am stuck at my last issue with Quantum networking (at least
>>> that¹s
>>>>>>> what I think).
>>>>>>> The VM instance comes up and gets the private IP and the
>>> metadata.
>>>>>>> Also I have assigned the floating IP to it but am not able to
>>> ping
>>>>>>> either IP except when I use:
>>>>>>>
>>>>>>>
>>>>>>> ip netns exec qrouter-32f35fb4-f9f1-4817-8818-fff832f73810 ping
>>>>>>> 50.50.1.3 <- fixed IP private network
>>>>>>> ip netns exec qrouter-32f35fb4-f9f1-4817-8818-fff832f73810 ping
>>>>>>> 10.24.124.4 <- floating IP external network
>>>>>>>
>>>>>>>
>>>>>>> Based on that I think the security rules are okay
>>>>>>> The router is tied to the specified tenant and using gateway of
>>> the
>>>>>>> external network.
>>>>>>> I think the issue is routing table or maybe firewall related
>>> but not
>>>>>>> sure how to debug this.
>>>>>>>
>>>>>>>
>>>>>>> Some details of my environment are below.
>>>>>>> Any one have any words of wisdom/guidance?
>>>>>>>
>>>>>>>
>>>>>>> Thanks,
>>>>>>>
>>>>>>>
>>>>>>> -Farhan.
>>>>>>>
>>>>>>>
>>>>>>> Management Network: 192.168.0.0/24
>>>>>>> Data Network: 10.5.5.0/24
>>>>>>> External Network: 10.245.124.0/24
>>>>>>>
>>>>>>>
>>>>>>> Network Node: (192.168.0.2)
>>>>>>> ovs-vsctl show
>>>>>>> ea4fa894-5986-40f2-b10b-55eef2222408
>>>>>>> Bridge br-tun
>>>>>>> Port patch-int
>>>>>>> Interface patch-int
>>>>>>> type: patch
>>>>>>> options: {peer=patch-tun}
>>>>>>> Port "gre-1"
>>>>>>> Interface "gre-1"
>>>>>>> type: gre
>>>>>>> options: {in_key=flow, out_key=flow,
>>>>>>> remote_ip="192.168.0.3"}
>>>>>>> Port br-tun
>>>>>>> Interface br-tun
>>>>>>> type: internal
>>>>>>> Bridge br-int
>>>>>>> Port "tap3fca71a9-c8"
>>>>>>> tag: 4095
>>>>>>> Interface "tap3fca71a9-c8"
>>>>>>> type: internal
>>>>>>> Port patch-tun
>>>>>>> Interface patch-tun
>>>>>>> type: patch
>>>>>>> options: {peer=patch-int}
>>>>>>> Port "tap4b8a22a2-9c"
>>>>>>> tag: 4095
>>>>>>> Interface "tap4b8a22a2-9c"
>>>>>>> type: internal
>>>>>>> Port "tap633ed611-a9"
>>>>>>> tag: 1
>>>>>>> Interface "tap633ed611-a9"
>>>>>>> type: internal
>>>>>>> Port "qr-eebfe1cb-0f"
>>>>>>> tag: 1
>>>>>>> Interface "qr-eebfe1cb-0f"
>>>>>>> type: internal
>>>>>>> Port br-int
>>>>>>> Interface br-int
>>>>>>> type: internal
>>>>>>> Bridge br-ex
>>>>>>> Port "eth0"
>>>>>>> Interface "eth0"
>>>>>>> Port br-ex
>>>>>>> Interface br-ex
>>>>>>> type: internal
>>>>>>> Port "qg-910fef3b-cb"
>>>>>>> Interface "qg-910fef3b-cb"
>>>>>>> type: internal
>>>>>>> ovs_version: "1.4.0+build0"
>>>>>>>
>>>>>>>
>>>>>>> Kernel IP routing table
>>>>>>> Destination Gateway Genmask Flags Metric
>>> Ref
>>>>>>> Use
>>>>>>> Iface
>>>>>>> 0.0.0.0 192.168.0.253 0.0.0.0 UG 0 0
>>>>>>> 0
>>>>>>> eth1
>>>>>>> 10.5.5.0 0.0.0.0 255.255.255.0 U 0 0
>>>>>>> 0
>>>>>>> eth1
>>>>>>> 10.245.124.0 0.0.0.0 255.255.255.0 U 0 0
>>>>>>> 0
>>>>>>> br-ex
>>>>>>> 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0
>>>>>>> 0
>>>>>>> eth1
>>>>>>>
>>>>>>>
>>>>>>> Compute Node: (192.168.0.3)
>>>>>>> ovs-vsctl show
>>>>>>> f0fe78a5-dfd0-4f6b-87be-466dac0b4473
>>>>>>> Bridge br-tun
>>>>>>> Port patch-int
>>>>>>> Interface patch-int
>>>>>>> type: patch
>>>>>>> options: {peer=patch-tun}
>>>>>>> Port br-tun
>>>>>>> Interface br-tun
>>>>>>> type: internal
>>>>>>> Port "gre-2"
>>>>>>> Interface "gre-2"
>>>>>>> type: gre
>>>>>>> options: {in_key=flow, out_key=flow,
>>>>>>> remote_ip="192.168.0.2"}
>>>>>>> Bridge br-int
>>>>>>> Port patch-tun
>>>>>>> Interface patch-tun
>>>>>>> type: patch
>>>>>>> options: {peer=patch-int}
>>>>>>> Port br-int
>>>>>>> Interface br-int
>>>>>>> type: internal
>>>>>>> Port "tap6514a8cc-b2"
>>>>>>> tag: 1
>>>>>>> Interface "tap6514a8cc-b2"
>>>>>>> ovs_version: "1.4.0+build0"
>>>>>>>
>>>>>>>
>>>>>>> Kernel IP routing table
>>>>>>> Destination Gateway Genmask Flags Metric
>>> Ref
>>>>>>> Use
>>>>>>> Iface
>>>>>>> 0.0.0.0 192.168.0.253 0.0.0.0 UG 0 0
>>>>>>> 0
>>>>>>> eth1
>>>>>>> 10.5.5.0 0.0.0.0 255.255.255.0 U 0 0
>>>>>>> 0
>>>>>>> eth1
>>>>>>> 10.245.124.0 0.0.0.0 255.255.255.0 U 0 0
>>>>>>> 0
>>>>>>> eth0
>>>>>>> 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0
>>>>>>> 0
>>>>>>> eth1
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Mailing list: https://launchpad.net/~openstack
>>>>>>> Post to : openstack@xxxxxxxxxxxxxxxxxxx
>>>>>>> Unsubscribe : https://launchpad.net/~openstack
>>>>>>> More help : https://help.launchpad.net/ListHelp
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Mailing list: https://launchpad.net/~openstack
>>>>> Post to : openstack@xxxxxxxxxxxxxxxxxxx
>>>>> Unsubscribe : https://launchpad.net/~openstack
>>>>> More help : https://help.launchpad.net/ListHelp
>>>>>
>>>>
>>>
>>
>>_______________________________________________
>>Mailing list: https://launchpad.net/~openstack
>>Post to : openstack@xxxxxxxxxxxxxxxxxxx
>>Unsubscribe : https://launchpad.net/~openstack
>>More help : https://help.launchpad.net/ListHelp
>>
>
>
>
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