[Rdo-list] [Neutron] router can't ping external gateway

Marius Cornea mcornea at redhat.com
Tue May 19 11:00:13 UTC 2015 

Also, I'm seeing that you have 2 default routes on your host. I'm not sure it affects the setup but try keeping only one: e.g. 'ip route del default via 192.168.4.1' to delete the eth1 one.  

======[root at localhost ~(keystone_admin)]# ip r
default via 192.168.5.1 dev br-ex
default via 192.168.4.1 dev eth1

----- Original Message -----
> From: "Marius Cornea" <mcornea at redhat.com>
> To: "ICHIBA Sara" <ichi.sara at gmail.com>
> Cc: rdo-list at redhat.com
> Sent: Tuesday, May 19, 2015 12:50:45 PM
> Subject: Re: [Rdo-list] [Neutron] router can't ping external gateway
> 
> Hi,
> 
> Try to see if any of the ICMP requests leave the eth0 interface like 'tcpdump
> -i eth0 icmp' while pinging 192.168.5.1 from the router namespace.
> 
> Thanks,
> Marius
> 
> ----- Original Message -----
> > From: "ICHIBA Sara" <ichi.sara at gmail.com>
> > To: "Boris Derzhavets" <bderzhavets at hotmail.com>, rdo-list at redhat.com
> > Sent: Tuesday, May 19, 2015 12:12:30 PM
> > Subject: Re: [Rdo-list] [Neutron] router can't ping external gateway
> > 
> > ====updates
> > 
> > I have deleted my networks, rebooted my machines and configured an other
> > network. Now I can see the qr bridge mapped to the router but still can't
> > ping the external gateway:
> > 
> > ====[root at localhost ~(keystone_admin)]# ip netns exec
> > qrouter-85fa9459-503d-4996-86f3-6042604fed74 ip r
> > default via 192.168.5.1 dev qg-e1b584b4-db
> > 10.0.0.0/24 dev qr-7b330e0e-5c proto kernel scope link src 10.0.0.1
> > 192.168.5.0/24 dev qg-e1b584b4-db proto kernel scope link src 192.168.5.70
> > 
> > ====[root at localhost ~(keystone_admin)]# ip netns exec
> > qrouter-85fa9459-503d-4996-86f3-6042604fed74 ip a
> > 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 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
> > valid_lft forever preferred_lft forever
> > inet6 ::1/128 scope host
> > valid_lft forever preferred_lft forever
> > 12: qg-e1b584b4-db: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
> > noqueue
> > state UNKNOWN
> > link/ether fa:16:3e:68:83:f8 brd ff:ff:ff:ff:ff:ff
> > inet 192.168.5.70/24 brd 192.168.5.255 scope global qg-e1b584b4-db
> > valid_lft forever preferred_lft forever
> > inet 192.168.5.73/32 brd 192.168.5.73 scope global qg-e1b584b4-db
> > valid_lft forever preferred_lft forever
> > inet6 fe80::f816:3eff:fe68:83f8/64 scope link
> > valid_lft forever preferred_lft forever
> > 13: qr-7b330e0e-5c: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
> > noqueue
> > state UNKNOWN
> > link/ether fa:16:3e:92:9c:90 brd ff:ff:ff:ff:ff:ff
> > inet 10.0.0.1/24 brd 10.0.0.255 scope global qr-7b330e0e-5c
> > valid_lft forever preferred_lft forever
> > inet6 fe80::f816:3eff:fe92:9c90/64 scope link
> > valid_lft forever preferred_lft forever
> > 
> > 
> > =====[root at localhost ~(keystone_admin)]# ip netns exec
> > qrouter-85fa9459-503d-4996-86f3-6042604fed74 ping 192.168.5.1
> > PING 192.168.5.1 (192.168.5.1) 56(84) bytes of data.
> > From 192.168.5.70 icmp_seq=10 Destination Host Unreachable
> > From 192.168.5.70 icmp_seq=11 Destination Host Unreachable
> > From 192.168.5.70 icmp_seq=12 Destination Host Unreachable
> > From 192.168.5.70 icmp_seq=13 Destination Host Unreachable
> > From 192.168.5.70 icmp_seq=14 Destination Host Unreachable
> > From 192.168.5.70 icmp_seq=15 Destination Host Unreachable
> > From 192.168.5.70 icmp_seq=16 Destination Host Unreachable
> > From 192.168.5.70 icmp_seq=17 Destination Host Unreachable
> > 
> > 
> > =====[root at localhost ~(keystone_admin)]# ovs-vsctl show
> > 19de58db-509d-4de8-bd88-9222019b13f1
> > Bridge br-int
> > fail_mode: secure
> > Port "tap2decc1bc-bf"
> > tag: 2
> > Interface "tap2decc1bc-bf"
> > type: internal
> > Port br-int
> > Interface br-int
> > type: internal
> > Port patch-tun
> > Interface patch-tun
> > type: patch
> > options: {peer=patch-int}
> > Port "qr-7b330e0e-5c"
> > tag: 2
> > Interface "qr-7b330e0e-5c"
> > type: internal
> > Port "qvo164afbd4-0c"
> > tag: 2
> > Interface "qvo164afbd4-0c"
> > Bridge br-ex
> > Port "eth0"
> > Interface "eth0"
> > Port br-ex
> > Interface br-ex
> > type: internal
> > Port "qg-e1b584b4-db"
> > Interface "qg-e1b584b4-db"
> > type: internal
> > Bridge br-tun
> > Port br-tun
> > Interface br-tun
> > type: internal
> > Port "vxlan-c0a80520"
> > Interface "vxlan-c0a80520"
> > type: vxlan
> > options: {df_default="true", in_key=flow, local_ip="192.168.5.33",
> > out_key=flow, remote_ip="192.168.5.32"}
> > Port patch-int
> > Interface patch-int
> > type: patch
> > options: {peer=patch-tun}
> > ovs_version: "2.3.1"
> > 
> > 
> > 
> > 
> > 2015-05-19 11:58 GMT+02:00 ICHIBA Sara < ichi.sara at gmail.com > :
> > 
> > 
> > 
> > can you show me your plugin.ini file? /etc/neutron/plugin.ini and the other
> > file /etc/neutron/plugins/openvswitch/ovs_neutron_plugin.ini
> > 
> > 
> > 2015-05-19 10:47 GMT+02:00 Boris Derzhavets < bderzhavets at hotmail.com > :
> > 
> > 
> > 
> > There is one thing , which I clearly see . It is qrouter-namespace
> > misconfiguration. There is no qr-xxxxx bridge attached to br-int
> > Picture , in general, should look like this
> > 
> > ubuntu at ubuntu-System:~$ sudo ip netns exec
> > qrouter-6cb93ddd-2637-449d-8b10-7c07da49ee8c route -n
> > 
> > Kernel IP routing table
> > Destination Gateway Genmask Flags Metric Ref Use Iface
> > 0.0.0.0 192.168.12.15 0.0.0.0 UG 0 0 0 qg-a753a8f5-c8
> > 10.254.1.0 0.0.0.0 255.255.255.0 U 0 0 0 qr-393d9f71-53
> > 192.168.12.0 0.0.0.0 255.255.255.0 U 0 0 0 qg-a753a8f5-c8
> > 
> > ubuntu at ubuntu-System:~$ sudo ip netns exec
> > qrouter-6cb93ddd-2637-449d-8b10-7c07da49ee8c ifconfig
> > 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:65536 Metric:1
> > RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> > TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
> > collisions:0 txqueuelen:0
> > RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
> > 
> > qg-a753a8f5-c8 Link encap:Ethernet HWaddr fa:16:3e:a2:11:b4
> > inet addr:192.168.12.150 Bcast:192.168.12.255 Mask:255.255.255.0
> > inet6 addr: fe80::f816:3eff:fea2:11b4/64 Scope:Link
> > UP BROADCAST RUNNING MTU:1500 Metric:1
> > RX packets:24504 errors:0 dropped:0 overruns:0 frame:0
> > TX packets:17367 errors:0 dropped:0 overruns:0 carrier:0
> > collisions:0 txqueuelen:0
> > RX bytes:24328699 (24.3 MB) TX bytes:1443691 (1.4 MB)
> > 
> > qr-393d9f71-53 Link encap:Ethernet HWaddr fa:16:3e:9e:ec:01
> > inet addr:10.254.1.1 Bcast:10.254.1.255 Mask:255.255.255.0
> > inet6 addr: fe80::f816:3eff:fe9e:ec01/64 Scope:Link
> > UP BROADCAST RUNNING MTU:1500 Metric:1
> > RX packets:22487 errors:0 dropped:5 overruns:0 frame:0
> > TX packets:24736 errors:0 dropped:0 overruns:0 carrier:0
> > collisions:0 txqueuelen:0
> > RX bytes:2379287 (2.3 MB) TX bytes:24338711 (24.3 MB)
> > 
> > I would also advise you to post a question also on ask.openstack.org
> > 
> > Boris.
> > 
> > 
> > 
> > Date: Tue, 19 May 2015 09:48:58 +0200
> > From: ichi.sara at gmail.com
> > To: rdo-list at redhat.com
> > Subject: [Rdo-list] [Neutron] router can't ping external gateway
> > 
> > 
> > Hey people,
> > I have an issue with my networking. I connected my openstack to an external
> > network I did all the changes required. But still my router can't reach the
> > external gateway.
> > 
> > =====ifcfg-br-ex
> > DEVICE=br-ex
> > DEVICETYPE=ovs
> > TYPE=OVSBridge
> > BOOTPROTO=static
> > IPADDR=192.168.5.33
> > NETMASK=255.255.255.0
> > ONBOOT=yes
> > GATEWAY=192.168.5.1
> > DNS1=8.8.8.8
> > DNS2=192.168.5.1
> > 
> > 
> > ====ifcfg-eth0
> > DEVICE=eth0
> > HWADDR=00:0c:29:a2:b1:b9
> > ONBOOT=yes
> > TYPE=OVSPort
> > NM_CONTROLLED=yes
> > DEVICETYPE=ovs
> > OVS_BRIDGE=br-ex
> > 
> > ======[root at localhost ~(keystone_admin)]# ovs-vsctl show
> > 19de58db-509d-4de8-bd88-9222019b13f1
> > Bridge br-int
> > fail_mode: secure
> > Port "tap8652132e-b8"
> > tag: 1
> > Interface "tap8652132e-b8"
> > type: internal
> > Port br-int
> > Interface br-int
> > type: internal
> > Port patch-tun
> > Interface patch-tun
> > type: patch
> > options: {peer=patch-int}
> > Bridge br-ex
> > Port "qg-5f8ebe30-40"
> > Interface "qg-5f8ebe30-40"
> > type: internal
> > Port "eth0"
> > Interface "eth0"
> > Port br-ex
> > Interface br-ex
> > type: internal
> > Bridge br-tun
> > Port "vxlan-c0a80520"
> > Interface "vxlan-c0a80520"
> > type: vxlan
> > options: {df_default="true", in_key=flow, local_ip="192.168.5.33",
> > out_key=flow, remote_ip="192.168.5.32"}
> > Port br-tun
> > Interface br-tun
> > type: internal
> > Port patch-int
> > Interface patch-int
> > type: patch
> > options: {peer=patch-tun}
> > ovs_version: "2.3.1"
> > 
> > =====[root at localhost ~(keystone_admin)]# ping 192.168.5.1
> > PING 192.168.5.1 (192.168.5.1) 56(84) bytes of data.
> > 64 bytes from 192.168.5.1 : icmp_seq=1 ttl=64 time=1.76 ms
> > 64 bytes from 192.168.5.1 : icmp_seq=2 ttl=64 time=1.88 ms
> > 64 bytes from 192.168.5.1 : icmp_seq=3 ttl=64 time=1.45 ms
> > ^C
> > --- 192.168.5.1 ping statistics ---
> > 3 packets transmitted, 3 received, 0% packet loss, time 2002ms
> > rtt min/avg/max/mdev = 1.452/1.699/1.880/0.187 ms
> > [root at localhost ~(keystone_admin)]#
> > 
> > ======[root at localhost ~(keystone_admin)]# ip netns exec
> > qrouter-85fa9459-503d-4996-86f3-6042604fed74 ip a
> > 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 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
> > valid_lft forever preferred_lft forever
> > inet6 ::1/128 scope host
> > valid_lft forever preferred_lft forever
> > 14: qg-5f8ebe30-40: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
> > noqueue
> > state UNKNOWN
> > link/ether fa:16:3e:c2:1b:5e brd ff:ff:ff:ff:ff:ff
> > inet 192.168.5.70/24 brd 192.168.5.255 scope global qg-5f8ebe30-40
> > valid_lft forever preferred_lft forever
> > inet6 fe80::f816:3eff:fec2:1b5e/64 scope link
> > valid_lft forever preferred_lft forever
> > [root at localhost ~(keystone_admin)]#
> > 
> > 
> > ======[root at localhost ~(keystone_admin)]# ip r
> > default via 192.168.5.1 dev br-ex
> > default via 192.168.4.1 dev eth1
> > 169.254.0.0/16 dev eth0 scope link metric 1002
> > 169.254.0.0/16 dev eth1 scope link metric 1003
> > 169.254.0.0/16 dev br-ex scope link metric 1005
> > 192.168.4.0/24 dev eth1 proto kernel scope link src 192.168.4.14
> > 192.168.5.0/24 dev br-ex proto kernel scope link src 192.168.5.33
> > [root at localhost ~(keystone_admin)]#
> > 
> > 
> > ======[root at localhost ~(keystone_admin)]# ip netns exec
> > qrouter-85fa9459-503d-4996-86f3-6042604fed74 ip r
> > default via 192.168.5.1 dev qg-5f8ebe30-40
> > 192.168.5.0/24 dev qg-5f8ebe30-40 proto kernel scope link src 192.168.5.70
> > [root at localhost ~(keystone_admin)]#
> > 
> > 
> > ======[root at localhost ~(keystone_admin)]# ip netns exec
> > qrouter-85fa9459-503d-4996-86f3-6042604fed74 ping 192.168.5.1
> > PING 192.168.5.1 (192.168.5.1) 56(84) bytes of data.
> > ^C
> > --- 192.168.5.1 ping statistics ---
> > 5 packets transmitted, 0 received, 100% packet loss, time 3999ms
> > 
> > any hints??
> > 
> > 
> > 
> > 
> > 
> > _______________________________________________ Rdo-list mailing list
> > Rdo-list at redhat.com https://www.redhat.com/mailman/listinfo/rdo-list To
> > unsubscribe: rdo-list-unsubscribe at redhat.com
> > 
> > 
> > 
> > _______________________________________________
> > Rdo-list mailing list
> > Rdo-list at redhat.com
> > https://www.redhat.com/mailman/listinfo/rdo-list
> > 
> > To unsubscribe: rdo-list-unsubscribe at redhat.com
> 
> _______________________________________________
> Rdo-list mailing list
> Rdo-list at redhat.com
> https://www.redhat.com/mailman/listinfo/rdo-list
> 
> To unsubscribe: rdo-list-unsubscribe at redhat.com
>

More information about the dev mailing list