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2018-05-08 03:01:03 +02:00
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@ -0,0 +1,81 @@
.\" .br - line break (nothing else on the line)
.\" .B - bold
.\" .I - green or kursive (on HTML)
.\" .TP - paragraph ? (header line, followed by indented lines)
.\"
.TH igmpproxy 8 "" "igmpproxy 0.1"
.SH NAME
igmpproxy \- Multicast router utilizing IGMP forwarding
.SH SYNOPSIS
.B igmpproxy [-h] [-d] [-v [-v]]
.I config-file
.SH DESCRIPTION
.B igmpproxy
is a simple multicast routing daemon which uses IGMP forwarding to
dynamically route multicast traffic. Routing is done by defining an
"upstream" interface on which the daemon act as a normal Multicast
client, and one or more "downstream" interfaces that serves clients
on the destination networks. This is useful in situations where other
dynamic multicast routers (like 'mrouted' or 'pimd') cannot be used.
Since
.B igmpproxy
only uses IGMP signalling, the daemon is only suited for situations
where multicast traffic comes from only one neighbouring network.
In more advanced cases, 'mrouted' or 'pimd' is probably more suited.
The daemon is not designed for cascading, and probably won't scale
very well.
Currently only IGMPv1 and v2 is supported on downstream interfaces.
On the upstream interface the kernel IGMP client implementation is used,
and supported IGMP versions is therefore limited to that supported by the
kernel.
.SH OPTIONS
.IP -h
Display help.
.IP -v
Verbose logging. Set logging level to INFO instead of WARNING used by default.
.IP -vv
More verbose logging. Set logging level to DEBUG.
.IP -d
Output log messages to STDERR instead of to
.BR syslog (3).
.SH LIMITS
The current version compiles and runs fine with the Linux kernel version 2.4. The known limits are:
.B Multicast routes:
more then 200
.B Multicast group membership:
max. 20
.SH FILES
.TP
.B /proc/net/ip_mr_cache
- contains the active multicast routes
.TP
.B /proc/net/ip_mr_vif
- contains the 'virtual' interfaces used by the active multicast routing daemon
.TP
.B /proc/sys/net/ipv4/conf/<ifname>/force_igmp_version
- can be set to control what IGMP version the kernel should use on the upstream interface.
Ex.: 'echo 2 > /proc/sys/net/ipv4/conf/eth0/force_igmp_version' will force the kernel to
use IGMPv2 on eth0 (provided this is the upstream interface).
.SH SEE ALSO
.BR igmpproxy.conf (5),
.BR mrouted,
.BR pimd,
.BR smcroute
.SH BUGS
Currently none (but there probably will be :-/ )
.SH AUTHOR
Originally written by Johnny Egeland <johnny@rlo.org>.

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@ -0,0 +1,81 @@
.\" .br - line break (nothing else on the line)
.\" .B - bold
.\" .I - green or kursive (on HTML)
.\" .TP - paragraph ? (header line, followed by indented lines)
.\"
.TH igmpproxy 8 "" "@PACKAGE_STRING@"
.SH NAME
igmpproxy \- Multicast router utilizing IGMP forwarding
.SH SYNOPSIS
.B igmpproxy [-h] [-d] [-v [-v]]
.I config-file
.SH DESCRIPTION
.B igmpproxy
is a simple multicast routing daemon which uses IGMP forwarding to
dynamically route multicast traffic. Routing is done by defining an
"upstream" interface on which the daemon act as a normal Multicast
client, and one or more "downstream" interfaces that serves clients
on the destination networks. This is useful in situations where other
dynamic multicast routers (like 'mrouted' or 'pimd') cannot be used.
Since
.B igmpproxy
only uses IGMP signalling, the daemon is only suited for situations
where multicast traffic comes from only one neighbouring network.
In more advanced cases, 'mrouted' or 'pimd' is probably more suited.
The daemon is not designed for cascading, and probably won't scale
very well.
Currently only IGMPv1 and v2 is supported on downstream interfaces.
On the upstream interface the kernel IGMP client implementation is used,
and supported IGMP versions is therefore limited to that supported by the
kernel.
.SH OPTIONS
.IP -h
Display help.
.IP -v
Verbose logging. Set logging level to INFO instead of WARNING used by default.
.IP -vv
More verbose logging. Set logging level to DEBUG.
.IP -d
Output log messages to STDERR instead of to
.BR syslog (3).
.SH LIMITS
The current version compiles and runs fine with the Linux kernel version 2.4. The known limits are:
.B Multicast routes:
more then 200
.B Multicast group membership:
max. 20
.SH FILES
.TP
.B /proc/net/ip_mr_cache
- contains the active multicast routes
.TP
.B /proc/net/ip_mr_vif
- contains the 'virtual' interfaces used by the active multicast routing daemon
.TP
.B /proc/sys/net/ipv4/conf/<ifname>/force_igmp_version
- can be set to control what IGMP version the kernel should use on the upstream interface.
Ex.: 'echo 2 > /proc/sys/net/ipv4/conf/eth0/force_igmp_version' will force the kernel to
use IGMPv2 on eth0 (provided this is the upstream interface).
.SH SEE ALSO
.BR igmpproxy.conf (5),
.BR mrouted,
.BR pimd,
.BR smcroute
.SH BUGS
Currently none (but there probably will be :-/ )
.SH AUTHOR
Originally written by Johnny Egeland <johnny@rlo.org>.

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.\" .br - line break (nothing else on the line)
.\" .B - bold
.\" .I - green or kursive (on HTML)
.\" .TP - paragraph ? (header line, followed by indented lines)
.\"
.TH igmpproxy.conf 5 "" "igmpproxy 0.1"
.SH NAME
igmpproxy.conf \- Configuration file for
.BR igmpproxy (8)
multicast daemon
.SH DESCRIPTION
.B igmpproxy.conf
contains the configuration for the
.B igmpproxy
multicast daemon. It defines which network interfaces should be
used by the routing daemon. Each interface must be give one of the following roles:
.B upstream
,
.B downstream
or
.B disabled
.
The
.B upstream
network interface is the outgoing interface which is responsible for communicating
to availible multicast data sources. There can only be one upstream interface.
.B Downstream
network interfaces are the distribution interfaces to the destination networks,
where multicast clients can join groups and receive multicast data. One or more
downstream interfaces must be configured.
On
.B disabled
network interfaces all IGMP or multicast traffic is ignored altogether. If multiple
IP addresses is used on one single interface (ae. eth0:1 ...), all interface
aliases not in use should be configured as disabled.
Any line in the configuration file starting with
.B #
is treated as a comment. Keywords and parameters can be distributed over many lines.
The configuration file has two main keywords:
.B quickleave
.RS
Enables quickleave mode. In this mode the daemon will send a Leave IGMP message
upstream as soon as it recieves a Leave message for any downstream interface.
The daemon will then ask for Membership reports on the downstream interfaces,
and if a report is recieved the group is joined again upstream. Normally this
is not noticed at all by clients on the downstream networks. If it's vital
that the daemon should act exactly as a real multicast client on the upstream
interface, this function should not be used. Disabling this function increases
the risk of bandwidth saturation.
.RE
.B phyint
.I interface
.I role
[ ratelimit
.I limit
] [ threshold
.I ttl
] [ altnet
.I networkaddr ...
]
.RS
Defines the state and settings of a network interface.
.RE
.SH PHYINT OPTIONS
.B interface
.RS
The name of the interface the settings are for. This option is required for
phyint settings.
.RE
.B role
.RS
The role of the interface. This should be either
.B upstream
(only one interface),
.B downstream
(one or more interfaces) or
.B disabled
. This option is required.
.RE
.B ratelimit
.I limit
.RS
Defines a ratelimit for the network interface. If ratelimit is set to 0 (default),
no ratelimit will be applied. This setting is optional.
.RE
.B threshold
.I ttl
.RS
Defines the TTL threshold for the network interface. Packets with a lower TTL than the
threshols value will be ignored. This setting is optional, and by default the threshold is 1.
.RE
.B altnet
.I networkaddr
...
.RS
Defines alternate sources for multicasting and IGMP data. The network address must be on the
following format 'a.b.c.d/n'. By default the router will accept data from sources on the same
network as configured on an interface. If the multicast source lies on a remote network, one
must define from where traffic should be accepted.
This is especially useful for the upstream interface, since the source for multicast
traffic is often from a remote location. Any number of altnet parameters can be specified.
.RE
.SH EXAMPLE
## Enable quickleave
quickleave
.br
## Define settings for eth0 (upstream)
.br
phyint eth0 upstream
altnet 10.0.0.0/8
## Disable alternate IP on eth0 (eth0:0)
.br
phyint eth0:0 disabled
## Define settings for eth1 (downstream)
.br
phyint eth1 downstream ratelimit 0 threshold 1
## Define settings for eth2 (also downstream)
.br
phyint eth2 downstream
.SH SEE ALSO
.BR igmpproxy (8)
.SH AUTHOR
Originally written by Johnny Egeland <johnny@rlo.org>

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@ -0,0 +1,146 @@
.\" .br - line break (nothing else on the line)
.\" .B - bold
.\" .I - green or kursive (on HTML)
.\" .TP - paragraph ? (header line, followed by indented lines)
.\"
.TH igmpproxy.conf 5 "" "@PACKAGE_STRING@"
.SH NAME
igmpproxy.conf \- Configuration file for
.BR igmpproxy (8)
multicast daemon
.SH DESCRIPTION
.B igmpproxy.conf
contains the configuration for the
.B igmpproxy
multicast daemon. It defines which network interfaces should be
used by the routing daemon. Each interface must be give one of the following roles:
.B upstream
,
.B downstream
or
.B disabled
.
The
.B upstream
network interface is the outgoing interface which is responsible for communicating
to availible multicast data sources. There can only be one upstream interface.
.B Downstream
network interfaces are the distribution interfaces to the destination networks,
where multicast clients can join groups and receive multicast data. One or more
downstream interfaces must be configured.
On
.B disabled
network interfaces all IGMP or multicast traffic is ignored altogether. If multiple
IP addresses is used on one single interface (ae. eth0:1 ...), all interface
aliases not in use should be configured as disabled.
Any line in the configuration file starting with
.B #
is treated as a comment. Keywords and parameters can be distributed over many lines.
The configuration file has two main keywords:
.B quickleave
.RS
Enables quickleave mode. In this mode the daemon will send a Leave IGMP message
upstream as soon as it recieves a Leave message for any downstream interface.
The daemon will then ask for Membership reports on the downstream interfaces,
and if a report is recieved the group is joined again upstream. Normally this
is not noticed at all by clients on the downstream networks. If it's vital
that the daemon should act exactly as a real multicast client on the upstream
interface, this function should not be used. Disabling this function increases
the risk of bandwidth saturation.
.RE
.B phyint
.I interface
.I role
[ ratelimit
.I limit
] [ threshold
.I ttl
] [ altnet
.I networkaddr ...
]
.RS
Defines the state and settings of a network interface.
.RE
.SH PHYINT OPTIONS
.B interface
.RS
The name of the interface the settings are for. This option is required for
phyint settings.
.RE
.B role
.RS
The role of the interface. This should be either
.B upstream
(only one interface),
.B downstream
(one or more interfaces) or
.B disabled
. This option is required.
.RE
.B ratelimit
.I limit
.RS
Defines a ratelimit for the network interface. If ratelimit is set to 0 (default),
no ratelimit will be applied. This setting is optional.
.RE
.B threshold
.I ttl
.RS
Defines the TTL threshold for the network interface. Packets with a lower TTL than the
threshols value will be ignored. This setting is optional, and by default the threshold is 1.
.RE
.B altnet
.I networkaddr
...
.RS
Defines alternate sources for multicasting and IGMP data. The network address must be on the
following format 'a.b.c.d/n'. By default the router will accept data from sources on the same
network as configured on an interface. If the multicast source lies on a remote network, one
must define from where traffic should be accepted.
This is especially useful for the upstream interface, since the source for multicast
traffic is often from a remote location. Any number of altnet parameters can be specified.
.RE
.SH EXAMPLE
## Enable quickleave
quickleave
.br
## Define settings for eth0 (upstream)
.br
phyint eth0 upstream
altnet 10.0.0.0/8
## Disable alternate IP on eth0 (eth0:0)
.br
phyint eth0:0 disabled
## Define settings for eth1 (downstream)
.br
phyint eth1 downstream ratelimit 0 threshold 1
## Define settings for eth2 (also downstream)
.br
phyint eth2 downstream
.SH SEE ALSO
.BR igmpproxy (8)
.SH AUTHOR
Originally written by Johnny Egeland <johnny@rlo.org>