igmpproxy.conf(5)igmpproxy.conf(5)NAMEigmpproxy.conf - Configuration file for igmpproxy(8) multicast daemon
DESCRIPTIONigmpproxy.conf contains the configuration for the igmpproxy multicast
daemon. It defines which network interfaces should be used by the rout‐
ing daemon. Each interface must be give one of the following roles:
upstream , downstream or disabled
The upstream network interface is the outgoing interface which is
responsible for communicating to availible multicast data sources.
There can only be one upstream interface.
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 con‐
figured.
On 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 # is treated as a com‐
ment. Keywords and parameters can be distributed over many lines. The
configuration file has two main keywords:
quickleave
Enables quickleave mode. In this mode the daemon will send a
Leave IGMP message upstream as soon as it recieves a Leave mes‐
sage 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 multi‐
cast client on the upstream interface, this function should not
be used. Disabling this function increases the risk of bandwidth
saturation.
phyint interface role [ ratelimit limit ] [ threshold ttl ] [ altnet
networkaddr ... ]
Defines the state and settings of a network interface.
PHYINT OPTIONS
interface
The name of the interface the settings are for. This option is
required for phyint settings.
role
The role of the interface. This should be either upstream (only
one interface), downstream (one or more interfaces) or disabled
ratelimit limit
Defines a ratelimit for the network interface. If ratelimit is
set to 0 (default), no ratelimit will be applied. This setting
is optional.
threshold ttl
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.
altnet networkaddr
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.
EXAMPLE
## Enable quickleave quickleave
## Define settings for eth0 (upstream)
phyint eth0 upstream
altnet 10.0.0.0/8
## Disable alternate IP on eth0 (eth0:0)
phyint eth0:0 disabled
## Define settings for eth1 (downstream)
phyint eth1 downstream ratelimit 0 threshold 1
## Define settings for eth2 (also downstream)
phyint eth2 downstream
SEE ALSOigmpproxy(8)AUTHOR
Originally written by Johnny Egeland <johnny@rlo.org>
igmpproxy 0.1igmpproxy.conf(5)
