# /etc/mrouted.conf example, refer to mrouted(8) for more details:
#   Thanks to John Andrews of UCL for the instructions.
#   Related commands: mrouted(8), mtrace(8), mrinfo(8), netstat -g.
#
# General Multicast Topology: 
#
#    Note: This is NOT the Internet (traceroute) topology.
#  
#    OM--|                                                    |--RD
#    RD--|--[MRouter/mrouted]--(Internet)--[MRouter/mrouted]--|--RD
#    RD--|                                                    |--RD
#
#    To minimize the TTLs on the multicast packets, we need to setup mrouted
#    tunnels between the two multicast router boxes shown above.
#    * Mrouted MUST be run on both subnets, but not necessarily on the
#      routers. MRouters above can be any hosts on the same subnets of the
#      XBone hosts, even the hosts running OM or RD.
#    * The setting on both ends of the tunnel should be identical except the
#      route/subnet & tunnel endpoints should be reversed. (Don't forget the
#      interface name on "phyint", or just use IP addresses.)
#
# Multicast Topology for the following example:
#                                                                 |--RD
#    [OM:dee.isi.edu/mrouted]--(Internet)--[128.16.64.9/mrouted]--|--RD
#             ISI                                  UCL            |--RD
#
#    The following is the mrouted.conf on our OM, dee.isi.edu (128.9.160.175):
#       > fxp0 on dee:	128.9.160.175.
#       > UCL mrouter:	128.16.64.9
#       > UCL subnet:	128.16.64/20
# 
#    1. Make mrouted DENY route 128.16.64/20 on interface fxp0 for it will be
#       handled by the tunnel interface (vif).

phyint fxp0 deny 128.16.64/20 bidir

#   2. Define the tunnel interface (vif) [128.9.160.175--128.16.64.9] for
#      mrouted to handle the route on 128.16.64/20.

tunnel 128.9.160.175 128.16.64.9 metric 1 threshold 1 rate_limit 500 accept 128.16.64/20