Problem Description: Wierd L2 BUM traffic Behaviour SW - MS 15.21.1 HW - MS250-24P Topology : Interface 3 | | L2 Vlan 100 Interface 1 -----------Switch MS 250----------- Interface 2 | | Interface 4 All ports are part of VLAN 100(access port), Nothing else is configured on the switch like storm control. On all ports, the Servers are connected which can capture the packets. This is my lab device hence there is no production traffic or any other traffic load on the switch. Summary : When we send broadcast traffic from Interface 1, It is received on some of the interfaces not all(like sometimes I see the broadcast packet received on Interface 2 or 3 or 4 sometime 3 and 4). I have a packet capture setup to see on what interface I receive the broadcast. Packet Test: Injected packet from interface 1 - mac_src aa:aa:aa:aa:aa:10 mac_dst ff:ff:ff:ff:ff:ff eth_type 0x800 ip_version 4 vlan_vid untagged ipv4_src 101.10.10.10 ipv4_dst 101.10.10.100 ip_proto 6 I received the above packet on interface 3 only(validated through captures setup on all connected servers.). At the same time, I took the combined captures on the Dashboard for interfaces 2,3,4. it also shows one packet. Ideally, it should show three broadcast packets as the captures are for combined interfaces 2,3,4. I just want to confirm if you see this behaviour in your LAB for the MS switch. Regards, Pavan Pawar
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