POB-FEC(1) User Command POB-FEC(1)NAME
pob-fec - receive FEC MP3 streams
pob-fec [ -s address ] [ -p port ] [ -b size ] [ -q ]
pob-fec receives a FEC MP3 stream using a custom protocol. The streamed MP3 frames are first decomposed in autonomous data units (ADUs).
These ADUs are grouped into ADU groups, which are encoded redundantly using a FEC method by Luigi Rizzo. For example, a group if 8 ADUs can
be encoded into 16 packets. Any 8 received packets of these 16 packets is sufficient to recover the original 8 ADUs. The incoming MP3
stream is decoded, buffered and written to stdout.
OPTIONS -s address
Specify the address to listen to (default 18.104.22.168). If the address is a multicast address, group membership is requested automat-
Specify the port to listen to.
Specify the number of ADU groups that are hold in the buffer (default 16).
-q Don't output any information on standard error.
pob-fec -s 22.214.171.124 -p 8989 | mpg123 -
Receive the MP3 FEC stream sent to 126.96.36.199 on port 8989 and feed it into the MP3 decoder mpg123.
Manuel Odendahl <email@example.com>, Florian Wesch <firstname.lastname@example.org>
February 2005 POB-FEC(1)
Check Out this Related Man Page
NG_FEC(4) BSD Kernel Interfaces Manual NG_FEC(4)NAME
ng_fec -- netgraph Fast EtherChannel node
The fec node implements Ethernet port trunking using the ``Cisco Fast EtherChannel'' protocol. Upon creation, a fec node creates a network
interface associated with it. Interfaces are named ``fec0'', ``fec1'', etc. New nodes take the first available unit.
The fec node accepts any hooks. However it does not use them. Under normal operation, a fec node should not have any hooks.
Interface membership in the FEC group is configured with the following control messages:
Attach interface to the FEC group. The target interface name is passed as a string argument.
Remove interface from the trunk. The target interface name is passed as a string argument.
The following control messages define the forwarding method for a node:
Forwarding decisions will be based on the link-layer MAC address of the destination.
Forwarding decisions will be based on the IP address of the destination.
This node shuts down upon receipt of a NGM_SHUTDOWN control message.
The following example script creates an fec node, attaches four Ethernet interfaces to it and sets the forwarding method to be IP-address
/usr/sbin/ngctl -f- << SEQ
mkpeer fec dummy fec
msg fec0: add_iface "dc0"
msg fec0: add_iface "dc1"
msg fec0: add_iface "dc2"
msg fec0: add_iface "dc3"
msg fec0: set_mode_inet
SEE ALSO netgraph(4)HISTORY
The fec node type was implemented in FreeBSD 5.0.
The fec node was written by Bill Paul <wpaul@FreeBSD.org>. This manual page was written by Gleb Smirnoff <glebius@FreeBSD.org>.
BSD July 22, 2004 BSD
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Manually checked records. record length and data matched.
diff file1 file2
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