If you are using virtio as the network adapter model for your VMs then you will 
see the interface speed reported as 10MB interfaces (virtio has no limit, and 
is reported falsely in most tools). 

You can run a bandwidth test between 2 VMs (or from a VM to another system in 
your infrastructure) using a tool like iperf to validate. Here's a good blog 
post that gives a brief overview on how to use it: 

http://linux.cloudibee.com/2009/02/iperf-network-throughput-measurement-tool/ 

If using CentOS/RHEL, EPEL has this tool. I believe it is in the Ubuntu/Debian 
default repositories. 

----- Original Message -----

From: "Shek Mohd Fahmi Abdul Latip" <fahmi.la...@mimos.my> 
To: users@lists.opennebula.org 
Cc: "Hadi Noira Omar" <hadi.o...@mimos.my>, "Shahrin Mohamad Fuzi" 
<shahrin.f...@mimos.my> 
Sent: Thursday, September 26, 2013 6:52:15 AM 
Subject: [one-users] OpenvSwitch intergration 

Hi experts, 
I’m integrating OpenvSwitch with Opennebula. The good news is, they work 
beautifully together J . Bad news is very less documentation available for 
OpenvSwitch. Then I have doubt on the new setup of OpenvSwitch. When I 
deploying VM through Opennebula, it created vnet as expected. Somehow the speed 
of it downgraded to 10MB-FD compare what I have on physical hardware, 1GB-FD. 
Could someone please advise me how to ensure that vnet speed same at physical 
network card? Here is my current configuration: 
# ovs-vsctl show 
8167368c-a8f8-41dd-beab-7984a3e63ddb 
Bridge "ovsbr0" 
Port "ovsbr0" 
Interface "ovsbr0" 
type: internal 
Port "vnet1" 
tag: 407 
Interface "vnet1" 
Port "ovsbond0" 
Interface "eth1" 
Interface "eth0" 
Port "vnet0" 
tag: 264 
Interface "vnet0" 
ovs_version: "1.10.0" 
# ovs-appctl bond/show 
---- ovsbond0 ---- 
bond_mode: active-backup 
bond-hash-basis: 0 
updelay: 0 ms 
downdelay: 0 ms 
lacp_status: negotiated 
slave eth0: enabled 
may_enable: true 
slave eth1: enabled 
active slave 
may_enable: true 
# ovs-ofctl show ovsbr0 
OFPT_FEATURES_REPLY (xid=0x2): dpid:0000e8393524b2b6 
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(eth0): addr:e8:39:35:24:b2:b6 
config: 0 
state: 0 
current: 1GB-FD COPPER AUTO_NEG 
advertised: 10MB-HD 10MB-FD 100MB-HD 100MB-FD 1GB-FD AUTO_NEG 
supported: 10MB-HD 10MB-FD 100MB-HD 100MB-FD 1GB-FD COPPER AUTO_NEG 
speed: 1000 Mbps now, 1000 Mbps max 
2(eth1): addr:e8:39:xx:xx:xx:xx 
config: 0 
state: 0 
current: 1GB-FD COPPER AUTO_NEG 
advertised: 10MB-HD 10MB-FD 100MB-HD 100MB-FD 1GB-FD AUTO_NEG 
supported: 10MB-HD 10MB-FD 100MB-HD 100MB-FD 1GB-FD COPPER AUTO_NEG 
speed: 1000 Mbps now, 1000 Mbps max 
11(vnet0): addr:fe:00:xx:xx:xx:xx 
config: 0 
state: 0 
current: 10MB-FD COPPER 
speed: 10 Mbps now, 0 Mbps max 
12(vnet1): addr:fe:00:xx:xx:xx:xx 
config: 0 
state: 0 
current: 10MB-FD COPPER 
speed: 10 Mbps now, 0 Mbps max 
LOCAL(ovsbr0): addr:e8:39:xx:xx:xx:xx 
config: 0 
state: 0 
speed: 0 Mbps now, 0 Mbps max 
OFPT_GET_CONFIG_REPLY (xid=0x4): frags=normal miss_send_len=0 
Best regards, 
.fahmie 


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