Hi, I've been trying to use sflow on a BigIron 4000 (J-BxGMR4 with firmware 8.00.00b) with sflow v2 (the older standard, but the only available until v7.x of the firmware) for accounting traffic based on ports/VLANs. Most parts have been successful.
But I occasionally receive traffic from other routers that I know for sure send traffic through a VLAN. The "inputPort" given in the flow is correct, but in_vlan in those cases is simply "0". This does not appearr for one remote router or VLAN only, but happens on a repeatable basis of (it seems) randomly selected flows/packets. Anybody seen this as well? Looks like my only chance now is to take the srcMAC to know where traffic came from - but knowing the correct VLAN was used would be much more helpful. Regards, Stefan
