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[Darragh OReilly <darragh.oreilly@xxxxxxxxx>]

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-install_intro.html
>
>
>I am stuck at my last issue with Quantum networking (at least that’s 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
>
>
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