# raw-packet-template > RouterOS directory reference for /tool/traffic-generator/raw-packet-template. ----------- ## tool/traffic-generator/raw-packet-template **Type:** Directory Builds packet content from a raw header string. Use this when you need low-level packets that the packet-template builder cannot express. See the [Traffic Generator](../../../diagnostics-monitoring-and-troubleshooting/traffic-generator) guide. dynamic Descriptive name of the RAW packet template. Name of the port (from the port menu) the packets are sent out through. RAW packet header as a hexadecimal string; it fully defines the header stack. How the packet payload (after the header) is filled: uninitialized (not zeroed; fastest), specific-byte (with data-byte), incrementing (bytes 00 01 02 ...), random (random bytes; slowest). Byte used to fill the payload when data=specific-byte. Byte offsets in the packet, each with a bit mask, that are filled with random values. Fields at given byte offsets that are filled with random values: `width` sets the field size (8, 16 or 32 bits) and `range` the range of the values. Byte offset of the IPv4 header within the packet, so the generator can locate and parse it. Byte offset of the IPv6 header within the packet. Byte offset of the UDP header within the packet. Whether the UDP checksum is computed by the generator. Byte offset of the TCP header within the packet. Whether a special footer is appended to the generated packets. Byte offset from which the 2-byte checksum is calculated; for example 14 skips the Ethernet header. no-checksum disables the checksum. Total length of the packet header in bytes.