[ovs-discuss] SDN setup on Real hosts

shruti rao shrutirao88 at gmail.com
Mon Dec 1 23:50:50 UTC 2014


Hi,

I am trying to setup a local SDN network using physical hosts. My setup is
as follows:

                                         OpenDayLight Controller (Host4)
                                                    (11.0.0.1)
                                                           |
                                                           |
                                                   (eth0: 11.0.0.2)
   Host1
-------------------------------OpenvSwitch----------------------------------Host2
(11.0.0.5)                  (eth1: 11.0.0.3) Host3  (eth2:
11.0.0.4)                (11.0.0.6)


Each of the machines have Ubuntu 14.04 Kernel version: 3.13.0. The
openvswitch version is 2.3.0.

The hosts and controller are connected to the switch via physical NIC cards.

The output of ovs-vsctl show is as follows:
    Bridge "br0"
        Controller "tcp:11.0.0.1:6633"
            is_connected: true
        Port "eth2"
            Interface "eth2"
        Port "br0"
            Interface "br0"
                type: internal
        Port "eth1"
            Interface "eth1"

The output of ovs-ofctl show br0:
OFPT_FEATURES_REPLY (xid=0x2): dpid:00000014d12dcd24
n_tables:254, n_buffers:256
capabilities: FLOW_STATS TABLE_STATS PORT_STATS QUEUE_STATS ARP_MATCH_IP
actions: OUTPUT SET_VLAN_VID SET_VLAN_PCP STRIP_VLAN SET_DL_SRC SET_DL_DST
SET_NW_SRC SET_NW_DST SET_NW_TOS SET_TP_SRC SET_TP_DST ENQUEUE
 1(eth1): addr:00:14:d1:2d:cd:24
     config:     0
     state:      0
     current:    100MB-FD AUTO_NEG
     advertised: 10MB-HD 10MB-FD 100MB-HD 100MB-FD 1GB-HD 1GB-FD COPPER
AUTO_NEG AUTO_PAUSE AUTO_PAUSE_ASYM
     supported:  10MB-HD 10MB-FD 100MB-HD 100MB-FD 1GB-HD 1GB-FD COPPER
AUTO_NEG
     speed: 100 Mbps now, 1000 Mbps max
 2(eth2): addr:00:1d:09:8b:61:be
     config:     0
     state:      0
     current:    100MB-FD COPPER AUTO_NEG
     advertised: 10MB-HD 10MB-FD 100MB-HD 100MB-FD COPPER AUTO_NEG
     supported:  10MB-HD 10MB-FD 100MB-HD 100MB-FD COPPER AUTO_NEG
     speed: 100 Mbps now, 100 Mbps max
 LOCAL(br0): addr:00:14:d1:2d:cd:24
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
OFPT_GET_CONFIG_REPLY (xid=0x4): frags=normal miss_send_len=0

After the setup is up, when I try to ping from Host2 to Host1, the ping
does not go through. I get the message "Destination Host Unreachable" and
only one flow rule is installed in the OpenvSwitch.

NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=5.022s, table=0, n_packets=0, n_bytes=0, idle_age=5,
priority=1,ip,nw_dst=11.0.0.6 actions=mod_dl_dst:00:1d:09:8b:60:fa,output:2

But once Host1 starts sending some traffic, the following pings from Host2
succeeds. Same is the case other way round too.

I am unable to point where the configuration is failing.

If anybody can guide me, it would be of great help!

Thanks,
Shruti
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