Open Stack

Hi,

I've tried without success to attach instances directly to external VLAN
network using "provider:network_type vlan"; below are the details. Using
"provider:network_type flat" I made it work.

I was basically following this:
http://www.s3it.uzh.ch/blog/openstack-neutron-vlan/

Any idea will be appreciated.

ML2 CONFIG
ml2_type_vlan network_vlan_ranges vlannet:81:91
bridge_mappings vlannet:br-vlan
enable_security_group True
enable_ipset True
firewall_driver
neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver

NETWORK CREATION
neutron net-create vlan81 --router:external True
--provider:physical_network vlannet --provider:network_type vlan
--provider:segmentation_id 81 --shared
neutron subnet-create vlan81 10.111.81.0/24 --name vlan81 --allocation-pool
start=10.111.81.65,end=10.111.81.126 --enable-dhcp --gateway 10.111.81.254
--dns-nameserver 10.1.1.68 --dns-nameserver 10.1.1.42 --host-route
destination=169.254.169.254/32,nexthop=10.111.81.65

NETWORK CONFIGURATION OF COMPUTE/NETWORK NODES
em1  \
       bond0 -> vlan81 -> | br-vlan | <-> | br-int |
em2  /

DEBUGGING

root at juno-dev02:~# ovs-ofctl dump-flows br-vlan
NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=2991.439s, table=0, n_packets=5374, n_bytes=357405,
idle_age=2, priority=4,in_port=5,dl_vlan=1 actions=mod_vlan_vid:81,NORMAL
 cookie=0x0, duration=3439.498s, table=0, n_packets=3792, n_bytes=159460,
idle_age=0, priority=2,in_port=5 actions=drop
 cookie=0x0, duration=3440.064s, table=0, n_packets=113217,
n_bytes=18712371, idle_age=0, priority=1 actions=NORMAL

root at juno-dev02:~# ovs-ofctl dump-flows br-int
NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=3891.241s, table=0, n_packets=1448, n_bytes=157908,
idle_age=1236, priority=3,in_port=7,dl_vlan=81 actions=mod_vlan_vid:1,NORMAL
 cookie=0x0, duration=4339.435s, table=0, n_packets=26538, n_bytes=1584268,
idle_age=1, priority=2,in_port=7 actions=drop
 cookie=0x0, duration=4340.224s, table=0, n_packets=10686, n_bytes=590535,
idle_age=1, priority=1 actions=NORMAL
 cookie=0x0, duration=4340.153s, table=23, n_packets=0, n_bytes=0,
idle_age=4340, priority=0 actions=drop

root at juno-dev02:~# nova list
+--------------------------------------+------+--------+------------+-------------+---------------------+
| ID                                   | Name | Status | Task State | Power
State | Networks            |
+--------------------------------------+------+--------+------------+-------------+---------------------+
| 2f1a2cba-6fc7-45ae-a251-e709ab8b7ecc | test | ACTIVE | -          |
Running     | vlan81=10.111.81.66 |
+--------------------------------------+------+--------+------------+-------------+---------------------+


Instance can reach DHCP server on network node (10.111.81.65), but cannot
reach default gateway (10.111.81.254), nor any host of the external network.

The br-vlan bridge shows outgoing ARP packets tagged with vlan 81, and ARP
replies not tagged, which I suppose it then drops because it does not match
the first rule of br-vlan.

The br-int bridge shows only outgoin ARP packets:


root at juno-dev02:~# tcpdump -env -i br-vlan icmp or arp
tcpdump: listening on br-vlan, link-type EN10MB (Ethernet), capture size
65535 bytes
11:45:56.463254 fa:16:3e:58:74:5b > ff:ff:ff:ff:ff:ff, ethertype 802.1Q
(0x8100), length 46: vlan 81, p 0, ethertype ARP, Ethernet (len 6), IPv4
(len 4), Request who-has 10.111.81.254 tell 10.111.81.66, length 28
11:45:56.464491 78:19:f7:9b:2a:41 > fa:16:3e:58:74:5b, ethertype ARP
(0x0806), length 56: Ethernet (len 6), IPv4 (len 4), Reply 10.111.81.254
is-at 78:19:f7:9b:2a:41, length 42
11:45:57.461253 fa:16:3e:58:74:5b > ff:ff:ff:ff:ff:ff, ethertype 802.1Q
(0x8100), length 46: vlan 81, p 0, ethertype ARP, Ethernet (len 6), IPv4
(len 4), Request who-has 10.111.81.254 tell 10.111.81.66, length 28
11:45:57.462765 78:19:f7:9b:2a:41 > fa:16:3e:58:74:5b, ethertype ARP
(0x0806), length 56: Ethernet (len 6), IPv4 (len 4), Reply 10.111.81.254
is-at 78:19:f7:9b:2a:41, length 42

root at juno-dev02:~# tcpdump -env -i br-int icmp or arp
tcpdump: WARNING: br-int: no IPv4 address assigned
tcpdump: listening on br-int, link-type EN10MB (Ethernet), capture size
65535 bytes
11:29:49.330084 fa:16:3e:58:74:5b > ff:ff:ff:ff:ff:ff, ethertype 802.1Q
(0x8100), length 46: vlan 1, p 0, ethertype ARP, Ethernet (len 6), IPv4
(len 4), Request who-has 10.111.81.254 tell 10.111.81.66, length 28
11:29:50.162106 fa:16:3e:58:74:5b > ff:ff:ff:ff:ff:ff, ethertype 802.1Q
(0x8100), length 46: vlan 1, p 0, ethertype ARP, Ethernet (len 6), IPv4
(len 4), Request who-has 10.111.81.49 tell 10.111.81.66, length 28
11:29:51.180111 fa:16:3e:58:74:5b > ff:ff:ff:ff:ff:ff, ethertype 802.1Q
(0x8100), length 46: vlan 1, p 0, ethertype ARP, Ethernet (len 6), IPv4
(len 4), Request who-has 10.111.81.49 tell 10.111.81.66, length 28
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