Udp Helper With Configured Broadcast Addresses - Dell Z9000 Configuration Manual

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Packet 2 is sent from the host on VLAN 101. It has a broadcast MAC address and a destination IP address

of 1.1.1.255. In this case, it is flooded on VLAN 101 in its original condition as the forwarding process is

Figure 39. UDP Helper with Subnet Broadcast Addresses

UDP Helper with Configured Broadcast Addresses

Incoming packets with a destination IP address matching the configured broadcast address of any

interface are forwarded to the matching interfaces.

In the following illustration, Packet 1 has a destination IP address that matches the configured broadcast

address of VLAN 100 and 101. If you enabled UDP helper and the UDP port number matches, the packet

is flooded on both VLANs with an unchanged destination address.

Packet 2 is sent from a host on VLAN 101. It has broadcast MAC address and a destination IP address that

matches the configured broadcast address on VLAN 101. In this case, Packet 2 is flooded on VLAN 101

with the destination address unchanged because the forwarding process is Layer 2. If you enabled UDP

helper, the packet is flooded on VLAN 100 as well.

Figure 40. UDP Helper with Configured Broadcast Addresses

IPv4 Routing