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PROCESSOR-SDK-AM64X: Need Help: Integrating hsr0 into br0 Bridge Configuration

Pengfei Ge
Prodigy 20 points

Part Number: PROCESSOR-SDK-AM64X

Tool/software:

Hello experts,

I need assistance with implementing a requirement to add hsr0 to bridge br0.


(1)The topology diagram above shows my solution design, with the objective of establishing network communication between PC1 and PC2.
(2)Steps performed:
ip link add name br0 type bridge
ip link set eth0 master br0
ip link set hsr0 master br0
ip link set br0 up
(3)Unfortunately, PC1 and PC2 are unable to ping each other.
(4)Through detailed packet capture analysis, I confirmed that the ARP broadcast packets sent from PC1 successfully reached PC2. PC2 has also generated ARP reply packets, which were verified via port mirroring on Red Box to have been transmitted. However, tcpdump captures on the hsr0 interface of the Linux development device show no ARP reply packets received. The current troubleshooting bottleneck lies at this stage.

This issue is critically impacting our project. Your urgent assistance is appreciated.
  • 0
    TI__Mastermind 20430 points

    Hello Pengfei, 

    1. What Linux SDK version are you currently using?

    2. Is the "Linux DEV" what I assume is using AM64x? Is this a custom board or a TI AM64x EVM?

    3. What steps did you use to setup hsr0? I assume you used eth1 and eth2 (the PRU-ICSSG Ethernet interfaces) to setup hsr0?

    4. Is the connection between hsr0 and the Red BOX a physical Ethernet cable connection? If so, were you connecting both physical eth1 and eth2 ports to the Red BOX?

    -Daolin

  • 0 in reply to Daolin Qiu
    Prodigy 20 points

    1.ti-processor-sdk-linux-rt-am64xx-evm-09.02.00.08-Linux.

    2.yes.it's a a custom board.

    3.I am using TI's script file.

    https://software-dl.ti.com/processor-sdk-linux-rt/esd/AM64X/09_02_00_08/exports/docs/linux/Foundational_Components/Kernel/Kernel_Drivers/Network/HSR_PRP_Non_Offload.html

    4.hsr0 and the red box are connected via Ethernet. Moreover, I believe that for the red box, whether eth1 and eth2 are connected individually or both are connected does not affect this issue. Before br0 was established, PC2 could successfully ping hsr0 through the red box.

  • 0 in reply to Pengfei Ge
    TI__Mastermind 20430 points

    Hi Pengfei, 

    Just to double check are eth1 and eth2 both PRU-ICSSG Ethernet interfaces in your setup?

    Is your intention to make the AM64x function essentially like a Redbox? I.e. eth1 and eth2 are used for the hsr interface and eth0 to connect to a non-redundant network?

    -Daolin

  • 0 in reply to Daolin Qiu
    Prodigy 20 points

    1.Both eth1 and eth2 are ‌PRU-ICSSG Ethernet interfaces‌, and the ‌hsr0‌ interface has been established using the official script files。

    2.As shown in the topology diagram and described earlier, the ‌implementation functionality of our Linux device‌ in this project ‌does appear to bear some resemblance to a Redbox‌.

  • 0 in reply to Pengfei Ge
    TI__Mastermind 20430 points

    Hello Pengfei, 

    Unfortunately we currently don't have software support to enable AM64x to function as a Redbox. Currently AM64x is able to function as an HSR DAHN (double attached HSR node), however not as a Redbox. There are simply additional changes that are required to enable AM64x as a Redbox. 

    I'm planning on bringing this Redbox use case internally to see if this is something we can enable. However, I need a bit more information about what is the ultimate end application your team is planning on using AM64x in this configuration for? Do you have information on the volume/estimated shipment of this end device you are developing? What is the expected start of production?

    -Daolin