• State
  • Locked Locked
  • Replies 5 replies
  • Subscribers 100 subscribers
  • Views 524 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Multiple network interfaces

nitesh chowdhary
Intellectual 460 points

Hi,

I am using AM335x custom board, and we interfaced KSZ8895 micrel 5-port ethernet switch to EMAC1 interface of AM335x. (i.e,connection is MAC to MAC)

My requirement is to create multiple network interfaces and assign each network interface to individual switch port.

To achieve it, i configured the switch with VLAN ids and enabled 802.1Q in kernel as well as in switch.

For example:

Port 1 - VLAN id = 4

Port 2 - VLAN id = 5

Port 3 - VLAN id = 6

Now my main problem is how i can create multiple network interfaces and assign to each port.

I tried to use "vconfig" tool to achieve that, but no success.

so please guide me how can i achieve the same?

regards

Nitesh

 

  • 0
    TI__Guru**** 393215 points

    Hi Nitesh,

    MAC to MAC connection is a use case not supported by TI. There has been customer feedback of successfully implementing MAC to MAC, but this has never been intended in the design of the AM335X, therefore is not timing closed and TI does not support this mode of operation.

  • 0 in reply to Biser Gatchev-XID
    Intellectual 460 points

    Hi Biser,

    1. Can i get detailed information on why MAC to MAC connection use case is not supported by TI?

    2. And what are the use cases that are supported by TI ?

    Since right now i am able to use the KSZ8895 ethernet switch (connected to EMAC1) normally in this mode.

    regards

    Nitesh

  • 0 in reply to nitesh chowdhary
    TI__Guru**** 393215 points

    I will forward this to the factory team.

  • 0 in reply to Biser Gatchev-XID
    TI__Guru 62875 points

    The design team validates device operation based on pre-defined use cases. For AM335x, the MAC to MAC use case was not considered during design validation. Validation of this interface was done by running various simulation test cases with a functional model of an Ethernet PHY connected to the device and was not validated with the MAC to MAC use case. This does not mean AM335x will not work with the MAC to MAC use case, we are just saying TI has not validated this use case. As Biser mentioned, several customer have said they were able to get MAC to MAC to work. I think your question is related to software support of multiple VLANs.

    I will ask the software team to review your question to see if they can offer any suggestions.

    Regards,
    Paul

  • 0 in reply to peaves
    Intellectual 460 points

    HI Paul,

    Thanks for the info, it will help a lot..! :-)

    And yes ,it would be helpful if i get some suggestion from software team regarding Multiple VLANs.

    regards

    Nitesh