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TCI6638K2K: ALE on 10gbe for tci6638k2k

Marius Cristea
Prodigy 50 points
Part Number: TCI6638K2K


Hi,

 

The question is about TCI6638K2K:
Is it possible for the ALE of the 10GBe to filter incoming multicast frames in VLAN unaware mode?

SPRUHJ5 documentation page 68 (2-42) states in the ALE rules:

   If (VLAN_Unaware)

      FORCE_UNTAGGED_EGRESS = “000000”

      REG_MCAST_FLOOD_MASK = “111111”

      UNREG_MCAST_FLOOD_MASK = “111111”

      VLAN_MEMBER_LIST = “111111”

So this will flood all mcast frames to all ports.


How can we receive ONLY desired mcast frames with destination addresses that we enter in the ALE Table in VLAN unaware mode?

Or is it better to move to VLAN Aware mode but how can we keep the VLAN part transparent when we do not have VLAN tags in the frames?

 

Best Regards,

Marius

  • 0
    TI__Guru 50170 points

    Hi, Marius,

    By running the CPSW in VLAN_aware==0 mode and the ALE in VLAN_aware=1 mode, you can program the default VLAN registers to filter registered or un-registered multicast.

    Since the CPSW is not in VLAN aware mode it will not add, remove or replace any VLANs, but the ALE will use the default rules to deal with traffic.

    Rex