Rare project developers

[Edgard da Cunha Pontes <>]

Hi Csaba,

if you go with 2 vms then you can have 1 controllers each having multiple dataplanes for example....

Yes! R1 is the controller (or "master", how am i calling) and R2 is the worker/dataplane.

In addition to configuring the rout211 example, I understand that it is necessary to configure the R2 server p4lang to indicate that there is a controller (R1), but I still haven't figured out how to do it (or if it is necessary).

Thanks for answering me this far. Some "glimmers" of a solution to the problem are beginning to emerge.

Em sex., 16 de set. de 2022 às 15:59, mc36 <> escreveu:

hi,
if you go with 2 vms then you can have 1 controllers each having multiple dataplanes for example....
br
cs


On 9/16/22 16:33, Edgard da Cunha Pontes wrote:
> Hi Csaba! Thanks again for answering me.
>
> My main question remains which configuration to use in R2 <https://github.com/vixphy/freertr-backplane/blob/main/virtualized/r2/rtr-sw.txt>  (rtr-sw). I'm using a basic p4emu setup,
> but I haven't figured out how to "point" it to R1 <https://github.com/vixphy/freertr-backplane/blob/main/virtualized/r1/rtr-sw.txt>  (rtr-sw) yet.
>
> I'm converting the rout211 example to use on two VMs in Virtualbox for now.
>
> Unfortunately it's a beginner level question as I haven't figured out how to configure R2 or the other workers (R3 and R4) yet.
>
>
> Em sex., 16 de set. de 2022   s 10:31, mc36 < <mailto:>> escreveu:
>
>         could you please verify if the original rout211 works for you?
>     then adding yiu cinfig ibe by ibe until it breaks?
>     thanks
>     cs
>
>     On 9/8/22 16:50, Edgard da Cunha Pontes wrote:
>      > Hi Csaba,   I hope you are better.
>      >
>      > After a few config "baby steps" and a long time, I managed to reach some interesting points, but doubts increased as well.
>      >
>      > Below is a brief description of the steps:
>      >
>      > 1) I created 3 VMs for routers r1, r2 and r5. Besides making connections with internal networks with VirtualBox.
>      > https://github.com/vixphy/freertr-backplane/tree/main/virtualized <https://github.com/vixphy/freertr-backplane/tree/main/virtualized>
>     <https://github.com/vixphy/freertr-backplane/tree/main/virtualized <https://github.com/vixphy/freertr-backplane/tree/main/virtualized>> [Topology]
>      >
>      > 2) I configured the "server dhcp4 eth1" and the ping works on the 10.12.11.0/24 <http://10.12.11.0/24> <http://10.12.11.0/24 <http://10.12.11.0/24>> network between r1 and
>     r2 (which did not happen in the compiled
>      > p4lang-rout211.tst example).
>      > http://sources.freertr.org/cfg/p4lang-rout211.tst <http://sources.freertr.org/cfg/p4lang-rout211.tst> <http://sources.freertr.org/cfg/p4lang-rout211.tst
>     <http://sources.freertr.org/cfg/p4lang-rout211.tst>>
>      >
>      > 3)   I made a configuration similar to the p4lang-rout211.tst example, but in this topology I added a NAT interface for management.
>      > https://github.com/vixphy/freertr-backplane/tree/main/virtualized/r1 <https://github.com/vixphy/freertr-backplane/tree/main/virtualized/r1>
>     <https://github.com/vixphy/freertr-backplane/tree/main/virtualized/r1 <https://github.com/vixphy/freertr-backplane/tree/main/virtualized/r1>>
>      > https://github.com/vixphy/freertr-backplane/tree/main/virtualized/r2 <https://github.com/vixphy/freertr-backplane/tree/main/virtualized/r2>
>     <https://github.com/vixphy/freertr-backplane/tree/main/virtualized/r2 <https://github.com/vixphy/freertr-backplane/tree/main/virtualized/r2>>
>      >
>      > 4)   Using the "tricks" learned in the last email, I was able to verify that there is a pointer to the remote dataplane, but the metrics still haven't changed. I believe I
>     didn't
>      > configure R2 correctly.
>      >
>      > r1(cfg-server)server p4lang p4
>      >      dataplanes 2
>      >      forwarder 0 export-vrf inet
>      >      forwarder 0 export-port sdn11 1 10 0 0 0
>      >      forwarder 0 export-port sdn12 2 10 0 0 0
>      >      forwarder 0 export-port sdn13 3 10 0 0 0
>      >      forwarder 0 export-port sdn14 4 10 0 0 0
>      >      forwarder 0 export-port bundle1 dynamic 0 0 0 0
>      >      forwarder 0 interconnect ethernet3
>      >      forwarder 0 backplane bundle1 1
>      >      forwarder 0 remote 10.11.12.111
>      >      forwarder 1 remote ::
>      >      vrf v9
>      >      exit
>      > !
>      >
>      > r2(cfg-server)server p4lang p4
>      >      export-vrf inet
>      >      export-port sdn1 0 0 0 0 0
>      >      export-port sdn2 1 0 0 0 0
>      >      export-port sdn3 2 0 0 0 0
>      >      export-port sdn4 3 0 0 0 0
>      >      export-port sdn5 4 0 0 0 0
>      >      interconnect ethernet0
>      >      vrf p4
>      >      exit
>      > !
>      >
>      > r1#show p4lang p4 dataplanes
>      > fwd     addr                       name     clsd     recon     ago         since
>      > 0         10.11.12.111     null     3           0              never     1970-01-01 00:59:59
>      > 1         ::                           null     3           0              never     1970-01-01 00:59:59
>      >
>      > 5) I couldn't put only one dataplane with the command "dataplanes 1". And I didn't understand why?
>      >
>      > Thank you so much for your help so far.
>      >
>      > Em ter., 23 de ago. de 2022     s 18:16, mc36 < <mailto:> <mailto: <mailto:>>> escreveu:
>      >
>      >        hi,
>      >
>      >        On 8/23/22 22:55, Edgard da Cunha Pontes wrote:
>      >         > Hi everyone!
>      >         >
>      >         > After some time, I came back to this thread.
>      >         > I started creating the VMs in the virtualbox (with the one-line installation) to get closer to the RENaaS topology. But I stopped at router r2 and did the following
>     steps:
>      >         >
>      >         > I created a debian/sid vm and compiled the freeRtr github repository.
>      >         > I ran the tests: ./tw.sh p4lang-rout211 other p4lang9.ini
>      >
>      >        excellent! that's the easiest way to go!
>      >
>      >         > I accessed routers r1, r5, r6, r7 and r8
>      >         >
>      >        nicee!
>      >
>      >         > But I could not access routers r2, r3 and r4.
>      >         >
>      >        the point is, these are just dataplanes... they even dont have config in the tst file:
>      >
>      >        r1 controls them, that's the main point of the whole feature... :)
>      >        if you're looking at ps aux | grep java, you'll find r1, r5..r8,
>      >        and if you ps aux | grep bin you'll see the 3 dataplanes all pointing to r1...
>      >
>      >        in r1, you'll find similar outputs like, and all the other sho p4 things got that optional (that is, hidden:) parameter
>      >
>      >        wifi>show p4lang p4 port-names ?
>      >                 <cr>
>      >                 [num] - forwarder number
>      >                 |            - output modifier
>      >
>      >        wifi>show p4lang p4 port-names 0
>      >        2022-08-23 23:01:03
>      >        num | name
>      >        1        | veth3a
>      >        0        | veth6b
>      >        2        | veth8b
>      >
>      >        wifi>show p4lang p4 port-names 1
>      >        2022-08-23 23:01:04
>      >        num | name
>      >        2        | eth0.151
>      >        3        | eth0.152
>      >        1        | eth0.167
>      >        0        | gre4t-cpuport
>      >        4        | wlan0
>      >        5        | wlan0-1
>      >        6        | wlan1
>      >
>      >        wifi>show p4lang p4 port-names 2
>      >        2022-08-23 23:01:05
>      >        num | name
>      >        3        | eth0.150
>      >        2        | eth0.151
>      >        1        | eth0.168
>      >        0        | gre4t-cpuport
>      >        4        | wlan0
>      >        5        | wlan0-1
>      >        6        | wlan1
>      >
>      >        wifi>show p4lang p4 port-names 3
>      >        2022-08-23 23:01:06
>      >        num | name
>      >        3        | eth0.150
>      >        2        | eth0.152
>      >        1        | eth0.166
>      >        0        | gre4t-cpuport
>      >        4        | wlan0
>      >        5        | wlan0-1
>      >        6        | wlan1
>      >
>      >        wifi>
>      >
>      >
>      >
>      >
>      >         > The goal was to understand the "controller r1 v9 9080 feature bundle mpls route" settings that Gabriel had commented on.
>      >         >
>      >         > Is there any way to access the compiled configuration of these routers?
>      >         >
>      >        you configure them from r1... they're just forwarders, instructed by r1...
>      >        much like the single box version, you have freerouter and a dataplane...
>      >        but here, freerouter got the capability to control more dataplanes at once...
>      >        do the spf over the backplane, and propagate the computed tables...
>      >
>      >        so as i left the lab before the polka experiments: a eu-sized router, made of 4 stacked pizzaboxes...
>      > https://www.cisco.com/c/en/us/products/collateral/routers/carrier-routing-system/data_sheet_c78-726136.html
>     <https://www.cisco.com/c/en/us/products/collateral/routers/carrier-routing-system/data_sheet_c78-726136.html>
>      >        <https://www.cisco.com/c/en/us/products/collateral/routers/carrier-routing-system/data_sheet_c78-726136.html
>     <https://www.cisco.com/c/en/us/products/collateral/routers/carrier-routing-system/data_sheet_c78-726136.html>>
>      >        was the last i knew about with a similar feature, but that was limited to 1 hop, whereas,
>      >        rare, thanks to the mpls based backplane, can have arbitrary long chassis chain...
>      >
>      >        or, you can build an arbitrarily big data center made of tofino boxes,
>      >        and you need to configure the whole dc at a single controlling router..
>      >        (3+ would be safe enough and that feature is also there: http://sources.freertr.org/cfg/conn-redun.tst <http://sources.freertr.org/cfg/conn-redun.tst>
>     <http://sources.freertr.org/cfg/conn-redun.tst <http://sources.freertr.org/cfg/conn-redun.tst>>
>      >        and was configured in the 4 pizzabox as a single stack experiment)
>      >
>      >        or the same if one finally builds a chassis based tofino switch: you'll have 1 or 2 route processors,
>      >        and let's say 8 line cards, and hopefully some forwarding engines: a good design would be horizontal
>      >        line cards in the front and vertical forwarding engines in the back, and no backplane but connections...
>      >        the line cards could be made of 64x port capable tofino, 32 to the faceplate and 32 toward the forwarding engines...
>      >        or even smaller ones based on the 32 port tofino...
>      >
>      >        br,
>      >        cs
>      >
>