IP packet
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... The architecture defined in this document describes a set of
protocols that support transmission of IP packets over the MPEG-2 TS.
...
... Protocol Data Units, PDUs, such as Ethernet frames or IP
packets, and formats each into a Sub-Network Data Unit, SNDU ...
... Receiver must filter (accept) IP packets sent with a number of PID
values, and must independently reassemble each SNDU.
...
... must be sent using the same PID. It should not be assumed that all
IP packets are carried on a single PID, as in some cable modem
...
... RF)
front-ends and demodulators). Some applications also envisage the
concurrent reception of IP Packets over other media that may not
necessarily use MPEG-2 transmission.
...
... network device, known as an Encapsulator receives PDUs (e.g., IP
Packets or Ethernet frames) and formats these into Subnetwork Data
Units ...
... The DVB family of standards currently defines a mechanism for
transporting an IP packet, or Ethernet frame using the Multi-Protocol
Encapsulation (MPE ...
... ATSC-DAT,ATSC-DATG]. It allows transmission of
IP packets or (by using LLC) Ethernet frames by encapsulation ...
... encapsulation that
will be truly IP-centric. Carrying IP packets over a TS Logical
Channel involves several convergence protocol functions. This
...
... Ethernet (currently 1500 bytes). Although the IPv4
and IPv6 packet format permits an IP packet of size up to 64 KB, such
packets are seldom seen on the current Internet. Since high speed
...
... SNAP (subnetwork access
protocol) header is also required for IP packets.
A Next Level Protocol Type field ...
... An encapsulation must provide a strong integrity check for each IP
packet. The requirements for usage of a link CRC ...
... TS Packets intended for one scope from being
received by another. Similar functionality may be achieved by
ensuring that only IP packets that do not have overlapping scope are
sent on the same TS Logical Channel. In some cases, this may imply
...
... sender: an IP system wishing to
send an IP packet encapsulates it and places it into an L2 frame. It
then identifies the appropriate L3 ...
... elements to the L2 information required to perform AR
before an IP packet is sent over an MPEG-2 TS. These are:
...
... address to be determined is the L2 address of the device at the
Hub to which the IP packet should be forwarded, which then relays the
IP packet back to the forward (broadcast ...
... Hub to which the IP packet should be forwarded, which then relays the
IP packet back to the forward (broadcast) MPEG-2 channel ...
...
If the Hub is an L2 bridge, then case 2 still has to relay the IP
packet back to the outbound MPEG-2 channel. The AR ...
... 6.2).
IP packets with these addresses must not be allowed to travel outside
their intended scope, and may cause unexpected behaviour if allowed
...
... filter received
unicast IP packets based on their assigned IP address. Reception of
the additional network traffic ...
... When the Receiver acts as an IP router, the receipt of such an IP
packet may lead to unexpected protocol behaviour. This also provides
a security vulnerability since arbitrary packets may be passed to the
...
... private networks.
IP packets with these addresses must not be allowed to travel outside
their intended scope (see Section 5.3). Performing multicast ...
... services in both the unicast and multicast modes. Resolution
protocols will support IP packet transmission using both the
Multiprotocol Encapsulation (MPE ...
... ETSI-DAT] uses private
Sections for the transport of IP packets and uses
encapsulation that is similar to the IEEE ...
... delivery of data
packets. This encapsulation maps an IP packet into a single
PES Packet payload ...