No, I did not configure gre tunnel on backend server. Since I was able to
make connection on the VPP LB host to backend server, I thought that is not
needed. So far, I just configured VIP on the dummy device on the backend
servers.
Can you give me instructions on how to configure gre tunnel? I saw some
write-up, but not sure if they are applicable to VPP LB.
John
On Thu, Oct 19, 2017 at 11:27 PM, Pierre Pfister (ppfister) <
ppfis...@cisco.com> wrote:
> Can you do a trace (trace add dpdk-input 4 , show trace ) to see what VPP
> is doing ?
> Did you configure the gre tunnel on backend servers ?
> Can you show the full tcpdump capture on the backend server (with max
> verbosity) ?
>
> Thanks,
>
> - pierre
>
> Le 20 oct. 2017 à 04:25, John Wei <johnt...@gmail.com> a écrit :
>
> Hi Pierre,
> Thanks for the info, I was able to bring up the VPP LB node, with 3
> backend servers. I used ping and telnet to verify that backend servers can
> be reached using telnet or ping on the VPP LB node. I'll deal with DPDK
> later.
> Then I tried to do the same thing on a client, VPP LB node got the
> request, but did not perform the forwarding to backend server.
> Below are the relevant information, let me know if you can see where did I
> do wrong.
>
> VIP is on 10.99.99.0/24 network
>
> VPP LB Client:
> 10.145.207.151
> I have setup route to reach VIP subnet through VPP LB node
> ip route add ${VIP}/24 dev eth0
> eth0 is on 10.145.207.0 (both client, VPP LB, and backend servers
> are all on this subnet)
> VPP LB
> 10.145.207.166
> lb conf ip4-src-address 10.145.207.1 timeout 10
>
> # configure VIP
> lb vip ${VIP}/24 encap gre4 new_len 1024
>
> # 3 backend servers
> lb as ${VIP}/24 10.145.207.141
> lb as ${VIP}/24 10.145.207.142
> lb as ${VIP}/24 10.145.207.168
>
> On backend servers (141, 142, 168)
> In addition to its own host IP. I have one of the VIP (10.99.99.101)
> configured on dummy device.
>
> As mentioned, on VPP LB node, I can telnet or ping 10.99.99.101. But, I
> was not able to do that on the client node.
> On the VPP LB node, I used "tcpdump -n -i eth0 port 23" and can see the
> income request from 10.145.207.151, wanting to reach 10.99.99.101.
> But. no further response.
> I wonder why VPP LB is not doing the forwarding from request coming from
> the outside the node?
>
> John
>
>
>
>
>
>
>
>
>
> On Wed, Oct 18, 2017 at 11:40 PM, Pierre Pfister (ppfister) <
> ppfis...@cisco.com> wrote:
>
>> Hello !
>>
>> Great that you managed to answer your prior questions.
>> Did you see this little doc: https://docs.fd.io/vpp/16
>> .12/lb_plugin_doc.html (Not very thorough, but it should help).
>>
>> LB does not require specific NIC. The fact that the lb plugin is loaded
>> does not interfere with the NICs.
>> You should look at DPDK's configuration in startup.conf file (uncomment
>> and fill the dpdk section).
>> Also make sure that the DPDK plugin is loaded (I wild guess based on your
>> previous question might be that you moved the lb plugin into a different
>> folder, and the dpdk plugin is not loaded by VPP).
>>
>> "lb conf <ip4-src-address>" is required to tell VPP which IPv4 source
>> address to use when sending tunnelled packets.
>> Since there is no return traffic with Maglev, this address does not need
>> to be one of VPP's addresses. But it should be properly routable toward VPP
>> to not cause drops due to ingress-filtering.
>>
>> Cheers,
>>
>> - Pierre
>>
>>
>>
>>
>>
>> Le 19 oct. 2017 à 04:34, John Wei <johnt...@gmail.com> a écrit :
>>
>> Hi Pierre,
>> Sorry for the spam, I made further progress and don't want to waste your
>> time answering questions that I already found answer.
>> - Once I got lb pluging loaded properly, I was able to configure it using
>> vppctl
>> Remaining questions:
>> - why I am got just "local0" device from "vppctl show int"? Does VPP LB
>> require special NIC? How about DPDK?
>> - Do I need to set "vppctl lb conf <ip4-src-address>"? Should that be
>> the IP of the host where VPP LB is run?
>>
>> John
>>
>>
>> On Wed, Oct 18, 2017 at 6:08 PM, John Wei <johnt...@gmail.com> wrote:
>>
>>> Hi Pierre,
>>> I made further progress.
>>> I did the "rpm -i vpp-plugins-17.07.01-release.x86_64.rpm", and got
>>> plugin installed.
>>> I updated the /etc/vpp/startup.conf file, and how I can see plugins
>>> using "vppctl show plugins".
>>> My questions remains are:
>>> - how to configure lb and what is the syntax
>>> - instead of load all the plugins in /usr/lib/vpp_plugins/, how to
>>> configure and load just one plugin?
>>>
>>> John
>>>
>>>
>>>
>>> On Wed, Oct 18, 2017 at 5:35 PM, John Wei <johnt...@gmail.com> wrote:
>>>
>>>> Hi Pierre,
>>>> I was using "yum install vpp and vpp-lib" and there was no plugins.
>>>> Now I build the whole vpp source, including plugins, and added
>>>> plugin_path /<home_dir>/vpp/extras/rpm/vpp
>>>> -17.07.01/build-root/build-vpp-native/vpp/plugins
>>>> to /etc/vpp/startup.conf file. Then restarted vpp.service.
>>>> Now
>>>> - how to do know that VPP lb plugin is loaded
>>>> - I still cant find the "lb" command. I guess it is really not a
>>>> command. But, where I need to add these "lb" configuration and what is the
>>>> syntax?
>>>> - In the monitoring section, it mentioned "show lb, show lv vips, .."
>>>> Are they subcommands for vppctl? I tried and it does not work.
>>>>
>>>> John
>>>>
>>>>
>>>> On Tue, Oct 3, 2017 at 11:19 PM, Pierre Pfister (ppfister) <
>>>> ppfis...@cisco.com> wrote:
>>>>
>>>>> Do you start VPP with the 'make run' command ?
>>>>>
>>>>> It looks like the way you start VPP, it doesn't specify the righ
>>>>> plugins directory.
>>>>> I'd suggest your try with adding "plugin_path
>>>>> </path/to/plugin/directory>" to VPP's command-line arguments.
>>>>>
>>>>> - Pierre
>>>>>
>>>>>
>>>>> Le 3 oct. 2017 à 20:40, John Wei <johnt...@gmail.com> a écrit :
>>>>>
>>>>> Pierre,
>>>>> Thanks for the response.
>>>>> I follow instructions to install VPP:
>>>>> https://wiki.fd.io/view/VPP/Installing_VPP_binaries_from_packages
>>>>> That gives me vpp utility. There is no lb command.
>>>>> I did a build of vpp by follow the instructions below to build vpp on
>>>>> linux
>>>>> https://wiki.fd.io/view/VPP/Pulling,_Building,_Running,_Hack
>>>>> ing_and_Pushing_VPP_Code#Linux
>>>>> I found "lb" in the plugins directory.
>>>>>
>>>>> But, how to bring up vpp with lb plugin? I hoping to see some
>>>>> instructions that I can follow to try this VPP lb.
>>>>>
>>>>> John
>>>>>
>>>>>
>>>>> On Sun, Oct 1, 2017 at 11:55 PM, Pierre Pfister (ppfister) <
>>>>> ppfis...@cisco.com> wrote:
>>>>>
>>>>>> Hello John,
>>>>>>
>>>>>> The LB plugin comes with VPP by default (no need for additional
>>>>>> download, sources are in src/plugins/lb).
>>>>>>
>>>>>> As far as instructions are concerned, I am afraid the link you
>>>>>> pointed to is all there is for now.
>>>>>> But please ask if you feel like something in particular is missing.
>>>>>>
>>>>>> - Pierre
>>>>>>
>>>>>>
>>>>>>
>>>>>> Le 30 sept. 2017 à 00:07, John Wei <johnt...@gmail.com> a écrit :
>>>>>>
>>>>>> I saw a VPP Load Balancer mentioned in this document:
>>>>>>
>>>>>> https://docs.fd.io/vpp/17.07/lb_plugin_doc.html
>>>>>>
>>>>>> But, I did not see installation information.
>>>>>> Can someone point me to where I can get download and setup
>>>>>> instructions?
>>>>>>
>>>>>> Thanks
>>>>>> John
>>>>>>
>>>>>> _______________________________________________
>>>>>> vpp-dev mailing list
>>>>>> vpp-dev@lists.fd.io
>>>>>> https://lists.fd.io/mailman/listinfo/vpp-dev
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>
>>
>
>
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