Ip Encapsulation, Fec Parameters - Ericsson RX8000 Reference Manual

Using the Equipment
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3.18.4.6.5

IP encapsulation, FEC parameters

Figure 3.162 Output Tab > IP Encapsulation, FEC Parameters Section
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Spanning Tree – Checking this box enables the Spanning Tree Protocol (STP).
User Redundancy Mode – If checked, the output status (transmit or not) will be
determined by the TX Enable settings. If not checked, the status of the outputs
is determined by the redundancy engine.
FEC Status – Displays whether Forward Error Correction is enabled or disabled.
Stream Mode – Determines which protocol to use for forwarding Transport
Stream packets, and which version of FEC to use:
- Protocols can be UDP (User Datagram Protocol) or RTP (Real-time
Transport Protocol).
- FEC packets can be computed per rows (for n consecutive packets), per
columns (for m of every n
Linearise Mode – Determines where to put the FEC packets in the stream:
- Minimum delay – Packets are emitted immediately after the last related
data packet. This can cause uneven bandwidth as columns are ended nearly
the same time.
- Non block alignment – Columns are shifted (begin at different rows),
resulting in a more even bandwidth but are delayed.
- Block alignment – Columns begin in the same row, but the FEC packets
are emitted evenly.
UDP Checksum Enable – Reports if UDP checksum computation is needed
and therefore enabled, or not and therefore disabled.
FEC rows – Reports how many rows are needed to compute a column FEC.
FEC columns – Reports how many columns are needed to compute a row FEC.
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packet) or both.
EN/LZT 790 0005 R7A