Hi Greg,
*ens256:*
- Source interface which is intended to receive all traffic (the reason
why promisc mode is ON)
- Trying to tunnel all traffic that I receive in this interface
*Output for* *ip addr show ens256:*
4: ens256: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc
pfifo_fast state UP group default qlen 1000
link/ether 00:50:56:95:ed:4f brd ff:ff:ff:ff:ff:ff
inet6 fe80::26b9:a4a6:c518:8738/64 scope link noprefixroute
valid_lft forever preferred_lft forever
-
Keerthana
On Wed, Mar 27, 2019 at 11:39 PM Gregory Rose <[email protected]> wrote:
>
>
> On 3/27/2019 2:30 AM, Ammu wrote:
>
> Hello Greg,
>
> I still don't see any change to my previous results.
>
> I am attaching the results along with the configurations made.
>
> I have attached first few packets of the capture.
>
> Kindly let me know if I am missing something or I am obscure in my
> explanation.
>
>
> I'm curious - why do you do this in your configuration?
>
> ovs-vsctl add-port br0 ens256
> ip link set ens256 up
> ip link set ens256 promisc on
>
> Can you provide the output of 'ip addr show ens256'?
> And what is the source of that interface?
>
> Thanks,
>
> - Greg
>
>
> -
> Keerthana
>
>
>
> On Tue, Mar 26, 2019 at 12:24 PM Ammu <[email protected]> wrote:
>
>> Hi Greg,
>>
>> Thank you for the update!
>>
>> Yeah, we are all in the same page.
>>
>> Maybe I will update the OS version to 7.5 and get back on the result at
>> the earliest.
>>
>> -
>> Keerthana
>>
>> On Tue, Mar 26, 2019 at 2:34 AM Gregory Rose <[email protected]>
>> wrote:
>>
>>>
>>>
>>> On 3/25/2019 9:03 AM, Gregory Rose wrote:
>>> >
>>> > On 3/23/2019 2:28 AM, Ammu wrote:
>>> >> Hey Greg,
>>> >>
>>> >> The recent check with OVS 2.10.1 version was done with CentOS Linux
>>> >> release 7.3.1611
>>> >>
>>> >> But, I will have to support the solution with distributions
>>> >> CentOS/Red Hat/Ubuntu.
>>> >>
>>> >> Currently giving you the output of distribution CentOS alone.
>>> >>
>>> >> [root@localhost ~]# modinfo openvswitch
>>> >> filename:
>>> >>
>>> /lib/modules/3.10.0-514.el7.x86_64/kernel/net/openvswitch/openvswitch.ko
>>> >> license: GPL
>>> >> description: Open vSwitch switching datapath
>>> >> rhelversion: 7.3
>>> >> srcversion: B31AE95554C9D9A0067F935
>>> >> depends:
>>> >> nf_conntrack,nf_nat,libcrc32c,nf_nat_ipv6,nf_nat_ipv4,nf_defrag_ipv6
>>> >> intree: Y
>>> >> vermagic: 3.10.0-514.el7.x86_64 SMP mod_unload modversions
>>> >> signer: CentOS Linux kernel signing key
>>> >> sig_key: D4:88:63:A7:C1:6F:CC:27:41:23:E6:29:8F:74:F0:57:AF:19:FC:54
>>> >> sig_hashalgo: sha256
>>> >
>>> > OK, I wanted to make sure that's the case before I do the repro
>>> > attempt today. I'm using a 7.5 based
>>> > driver but it should be substantially the same. I'll update in a bit
>>> > after I try it out.
>>> >
>>>
>>> Hi Ammu,
>>>
>>> I have tried your setup but am not seeing the same results.
>>>
>>> Here is my configuration on machine A:
>>>
>>> [root@localhost ovs-test-scripts]# ovs-vsctl show
>>> a83453d5-27f8-4873-9356-e94b0d488797
>>> Bridge "br0"
>>> Port "vxlan1"
>>> Interface "vxlan1"
>>> type: vxlan
>>> options: {df_default="false", key="100",
>>> remote_ip="200.0.0.102"}
>>> Port "br0"
>>> Interface "br0"
>>> type: internal
>>> ovs_version: "2.10.1"
>>>
>>> I have the identical configuration on Machine B, with the tunnel
>>> pointing back
>>> to machine A:
>>>
>>> [root@localhost ovs-test-scripts]# ovs-vsctl show
>>> bd184ee4-6e36-415b-ab90-e447046470c9
>>> Bridge "br0"
>>> Port "vxlan1"
>>> Interface "vxlan1"
>>> type: vxlan
>>> options: {df_default="false", key="100",
>>> remote_ip="200.0.0.109"}
>>> Port "br0"
>>> Interface "br0"
>>> type: internal
>>> ovs_version: "2.10.1"
>>>
>>> Both machines are running RHEL 7.5 which should be equivalent to CentOS
>>> 7.5.
>>>
>>> I ran an iperf session and captured the first 500 packets. I have
>>> attached the
>>> packet capture file.
>>>
>>> On Frame # 4 below we see the outer IPv4 header does not have the DF bit
>>> set on the
>>> outer IPv4 UDP encapsulating frame.
>>>
>>> Frame 4: 1514 bytes on wire (12112 bits), 1514 bytes captured (12112
>>> bits)
>>> Ethernet II, Src: RealtekU_a3:69:97 (52:54:00:a3:69:97), Dst:
>>> RealtekU_3a:a4:cd (52:54:00:3a:a4:cd)
>>> Internet Protocol Version 4, Src: 200.0.0.102, Dst: 200.0.0.109
>>> 0100 .... = Version: 4
>>> .... 0101 = Header Length: 20 bytes (5)
>>> Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
>>> Total Length: 1500
>>> Identification: 0xd87c (55420)
>>> Flags: 0x0000
>>> 0... .... .... .... = Reserved bit: Not set
>>> .0.. .... .... .... = Don't fragment: Not set <---------------
>>> not set
>>> ..0. .... .... .... = More fragments: Not set
>>> ...0 0000 0000 0000 = Fragment offset: 0
>>> Time to live: 64
>>> Protocol: UDP (17)
>>> Header checksum: 0x0bc1 [validation disabled]
>>> [Header checksum status: Unverified]
>>> Source: 200.0.0.102
>>> Destination: 200.0.0.109
>>> User Datagram Protocol, Src Port: 34290, Dst Port: 4789
>>> Source Port: 34290
>>> Destination Port: 4789
>>> Length: 1480
>>> [Checksum: [missing]]
>>> [Checksum Status: Not present]
>>> [Stream index: 2]
>>>
>>> CentOS 7.3 is pretty old - could you try upgrading to Centos 7.5 or
>>> higher and then
>>> see if the issue is resolved? Or is there perhaps some step you're
>>> doing that I'm
>>> missing?
>>>
>>> Here is my modinfo for openvswitch:
>>> filename:
>>>
>>> /lib/modules/3.10.0-862.el7.x86_64/kernel/net/openvswitch/openvswitch.ko.xz
>>> alias: net-pf-16-proto-16-family-ovs_packet
>>> alias: net-pf-16-proto-16-family-ovs_flow
>>> alias: net-pf-16-proto-16-family-ovs_vport
>>> alias: net-pf-16-proto-16-family-ovs_datapath
>>> license: GPL
>>> description: Open vSwitch switching datapath
>>> retpoline: Y
>>> rhelversion: 7.5
>>> srcversion: E70A19E64B8AC42B9A7641F
>>> depends:
>>> nf_conntrack,nf_nat,libcrc32c,nf_nat_ipv6,nf_nat_ipv4,nf_defrag_ipv6
>>> intree: Y
>>> vermagic: 3.10.0-862.el7.x86_64 SMP mod_unload modversions
>>> signer: Red Hat Enterprise Linux kernel signing key
>>> sig_key: 51:73:02:3B:F8:16:37:D7:BF:3C:51:50:13:4E:EC:84:1B:96:FD:0B
>>> sig_hashalgo: sha256
>>>
>>> Thanks,
>>>
>>> - Greg
>>>
>>>
>
_______________________________________________
discuss mailing list
[email protected]
https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
