[f-nsp] Double-switched (looped) traffic on Netiron MLX

[Franz Georg Köhler]

Hello,

I am currently seing traffic being blocked on a MLX setup where there 
are two VLANS:
First vlan (10 in this example) is a vlan with layer-3 ve interface.
Traffic is first sent via the internal VLAN to a firewall device.
Then it is switched using the external VLAN and finally being routed.
This is to make the traffic pass the firewall and not to switch it 
directly to the server, bypassing the firewall.

With this setup, MLX does not switch the traffic correctly until i set 
transparent-hw-flooding on the internal VLAN. ARP works but IP packets 
do not get forwarded.

Does anybody know why this is the case and if ther is any solution apart 
from setting transparent-hw-flooding?



                           +-------+
                           |       |               +-----------+
                           | ICX2  +---------------+  Server   |
              +------------+       |               +-----------+
              |            +-------+
              |
    +-------+ |
    |       +-+
    |  MLX  | VLAN 999
    |       +------------------+
    +-------+                  |
VLAN10/ve10                   |
        |                  +---+-------+
        |                  |           |
        |                  | firewall  |
        +------------------+           |
                           +-----------+



Best regards,

Franz Georg Köhler