Rare project developers

["Rafael S. Guimaraes" <>]

Hi Csaba, sorry for my late reply!

Yesterday, we observed the same issue happening in the PCAP file, the packets coming with Ethertype as 0x0000 and the routeID 0x800489e7. TBH, we did not know what was going on...thanks for answering and let's see if it is something happening between AMS and SAO. I am attaching the pcap file that we used. 

Best regards, 

Rafael Guimaraes

On Sat, 5 Nov 2022 at 03:03, mc36 <> wrote:

finally i got an idea on how to have the pcap, attached...
as you can see, the packets somehow arrive with ethertype=0x0000

MS0001#show polka routeid tunnel115
mode  routeid
hex   00 00 00 00 00 00 00 00 00 00 00 00 80 04 89 e7
poly  10000000000001001000100111100111
[..]

interestingly, the polka coefficient is somehow present in the packet...

fl: what transit do we have in between ams and sao that can rewrite the ethertype???
br,
cs

On 11/5/22 06:52, mc36 wrote:
> hi,
> a strange thing is going on here...
>
> i ping flooded into your tunnel by the following:
> AMS0001#ping 30.1.15.2 vrf CORE size 1111 repeat 1111111 tim 11
>
> then i verified if it exits the switch as polka:
> AMS0001#show interfaces sdn3.1916 ethertypes | include polka
> ethtyp  8842   polka      16939  0      0     19189793  0        0
>
> AMS0001#
> it increases as i repeatedly issue the command....
>
> but i get no polka packet at the sao switch:
> SAO0021#show interfaces sdn51.459 ethertypes
> info userReader.cmdEnter:userReader.java:1032 command SAO0021#show interfaces sdn51.459 ethertypes  from telnet tunnel123 22222 -> 172.16.11.16 50016
>                            packet                byte
> type    value  handler    tx     rx       drop  tx       rx         drop
> ethtyp  0000   null       0      2626139  0     0        313913310  0
> ethtyp  0800   ip4        30943  30770    0     3460858  3770587    0
> ethtyp  0806   arp4       147    146      0     4410     6424       0
> ethtyp  86dd   ip6        40624  39721    0     4909863  5773324    0
> ethtyp  8842   polka      0      0        0     0        0          0
> ethtyp  8847   mplsUni    0      0        0     0        0          0
> ethtyp  8848   mplsMulti  0      0        0     0        0          0
> ethtyp  88cc   lldp       876    0        0     134028   0          0
>
> SAO0021#
> moreove the null increases here, which is an indicator of the unknown ethertype....
> that is, my suspect here is the link between the two switches...
>
> i did a packet capture on the intreface but i found no way to get the file...
> can you please grab the /sdn51.459.pcap file from sao0021 and attach it here?
> thanks,
> cs
>
>
> On 11/4/22 23:57, Everson Borges wrote:
>> Hi All,
>>
>> We have a problem when sending traffic using the polka tunnel, if someone can help us, that would be great.
>>
>> image.png
>>
>> We are sending Traffic from the DTN-AMS-bm6(10.1.101.101) host via the polka tunnel (in blue), to DTN-OX(10.0.15.2), but we are facing the following issue:
>> - As shown below in the figure the packets have been dropped at the switch sao0001 in the interface sdn51.459. The switch ams0001 forwards according to the traffic.
>>
>> image.png
>>
>>
>> All the configurations are available in p4lab.
>> %3CmxGraphModel%3E%3Croot%3E%3CmxCell%20id%3D%220%22%2F%3E%3CmxCell%20id%3D%221%22%20parent%3D%220%22%2F%3E%3CmxCell%20id%3D%222%22%20style%3D%22edgeStyle%3DorthogonalEdgeStyle%3Brounded%3D0%3BorthogonalLoop%3D1%3BjettySize%3Dauto%3Bhtml%3D1%3BexitX%3D0%3BexitY%3D0.5%3BexitDx%3D0%3BexitDy%3D0%3BentryX%3D1%3BentryY%3D0.5%3BentryDx%3D0%3BentryDy%3D0%3BstrokeColor%3D%23FF3333%3BstrokeWidth%3D2%3B%22%20edge%3D%221%22%20source%3D%223%22%20target%3D%2210%22%20parent%3D%221%22%3E%3CmxGeometry%20relative%3D%221%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%223%22%20value%3D%22AMS0001%26lt%3Bbr%26gt%3BTofino%201%22%20style%3D%22rounded%3D1%3BwhiteSpace%3Dwrap%3Bhtml%3D1%3BfillColor%3D%23CCCCCC%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22343%22%20y%3D%22150%22%20width%3D%22100%22%20height%3D%2250%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%224%22%20style%3D%22edgeStyle%3DorthogonalEdgeStyle%3Brounded%3D0%3BorthogonalLoop%3D1%3BjettySize%3Dauto%3Bhtml%3D1%3BexitX%3D0%3BexitY%3D0.5%3BexitDx%3D0%3BexitDy%3D0%3BentryX%3D1%3BentryY%3D0.5%3BentryDx%3D0%3BentryDy%3D0%3BstrokeColor%3D%23000000%3BstrokeWidth%3D2%3B%22%20edge%3D%221%22%20source%3D%225%22%20target%3D%223%22%20parent%3D%221%22%3E%3CmxGeometry%20relative%3D%221%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%225%22%20value%3D%22SAO0001%26lt%3Bbr%26gt%3BTofino%201%22%20style%3D%22rounded%3D1%3BwhiteSpace%3Dwrap%3Bhtml%3D1%3BfillColor%3D%23CCCCCC%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22599.5%22%20y%3D%22150%22%20width%3D%22100%22%20height%3D%2250%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%226%22%20style%3D%22edgeStyle%3DorthogonalEdgeStyle%3Brounded%3D0%3BorthogonalLoop%3D1%3BjettySize%3Dauto%3Bhtml%3D1%3BexitX%3D0.5%3BexitY%3D0%3BexitDx%3D0%3BexitDy%3D0%3BentryX%3D0.5%3BentryY%3D1%3BentryDx%3D0%3BentryDy%3D0%3BstrokeWidth%3D2%3B%22%20edge%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20relative%3D%221%22%20as%3D%22geometry%22%3E%3CmxPoint%20x%3D%22653.5%22%20y%3D%22430%22%20as%3D%22sourcePoint%22%2F%3E%3CmxPoint%20x%3D%22653.5%22%20y%3D%22200%22%20as%3D%22targetPoint%22%2F%3E%3C%2FmxGeometry%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%227%22%20style%3D%22edgeStyle%3DorthogonalEdgeStyle%3Brounded%3D0%3BorthogonalLoop%3D1%3BjettySize%3Dauto%3Bhtml%3D1%3BexitX%3D0%3BexitY%3D0.5%3BexitDx%3D0%3BexitDy%3D0%3BentryX%3D1%3BentryY%3D0.5%3BentryDx%3D0%3BentryDy%3D0%3BstrokeColor%3D%23FF0000%3BstrokeWidth%3D2%3B%22%20edge%3D%221%22%20source%3D%228%22%20target%3D%229%22%20parent%3D%221%22%3E%3CmxGeometry%20relative%3D%221%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%228%22%20value%3D%22MIA0001%26lt%3Bbr%26gt%3BTofino%201%22%20style%3D%22rounded%3D1%3BwhiteSpace%3Dwrap%3Bhtml%3D1%3BfillColor%3D%23CCCCCC%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22599.5%22%20y%3D%22430%22%20width%3D%22100%22%20height%3D%2250%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%229%22%20value%3D%22DTN-OX%22%20style%3D%22whiteSpace%3Dwrap%3Bhtml%3D1%3Baspect%3Dfixed%3BfillColor%3D%23CCCCCC%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22370%22%20y%3D%22425%22%20width%3D%2260%22%20height%3D%2260%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%2210%22%20value%3D%22DTN-ams-bms6%22%20style%3D%22whiteSpace%3Dwrap%3Bhtml%3D1%3Baspect%3Dfixed%3BfillColor%3D%23CCCCCC%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22124%22%20y%3D%22145%22%20width%3D%2260%22%20height%3D%2260%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%2211%22%20value%3D%22sdn1.1779%26lt%3Bbr%26gt%3B10.15.16.1%22%20style%3D%22rounded%3D0%3BwhiteSpace%3Dwrap%3Bhtml%3D1%3BfillColor%3D%23f8cecc%3BstrokeColor%3D%23b85450%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22659%22%20y%3D%22390%22%20width%3D%2274%22%20height%3D%2230%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%2212%22%20value%3D%22sdn51.2500%26lt%3Bbr%26gt%3B10.15.16.2%22%20style%3D%22rounded%3D0%3BwhiteSpace%3Dwrap%3Bhtml%3D1%3BfillColor%3D%23f8cecc%3BstrokeColor%3D%23b85450%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22656%22%20y%3D%22215%22%20width%3D%2274%22%20height%3D%2230%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%2213%22%20value%3D%22sdn51.459%26lt%3Bbr%26gt%3B10.19.16.2%22%20style%3D%22rounded%3D0%3BwhiteSpace%3Dwrap%3Bhtml%3D1%3BfillColor%3D%23f8cecc%3BstrokeColor%3D%23b85450%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22530%22%20y%3D%22178%22%20width%3D%2267%22%20height%3D%2230%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%2214%22%20value%3D%22%26lt%3Bdiv%26gt%3B%26lt%3Bspan%20style%3D%26quot%3Bbackground-color%3A%20initial%3B%26quot%3B%26gt%3Bsdn3.1916%26lt%3B%2Fspan%26gt%3B%26lt%3Bbr%26gt%3B%26lt%3B%2Fdiv%26gt%3B%26lt%3Bdiv%26gt%3B10.19.16.1%26lt%3Bbr%26gt%3B%26lt%3B%2Fdiv%26gt%3B%22%20style%3D%22rounded%3D0%3Bwhi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>> I'
>> --
>> Best regards
>> Everson

Attachment: sdn51.459.pcap
Description: application/vnd.tcpdump.pcap