If PIM is configured on the interface, the virtual router supplies a list of the
interface's PIM neighbors and indicates which neighbors are leaf neighbors.
■
Information about DVMRP and GRE tunnels:
If the interface is an endpoint of a tunnel, the virtual router specifies the IP
address of the endpoint of the tunnel.
BGP Multicasting
BGP multicasting (MBGP) is an extension of the BGP unicast routing protocol. Many
of the functions available for BGP unicasting are also available for MBGP.
The MBGP extensions specify that BGP can exchange information within different
types of
address families
. The address families available are unicast IPv4, multicast
IPv4, and VPN-IPv4. When you enable BGP, the router employs unicast IPv4 addresses
by default.
We recommend you be thoroughly familiar with BGP before configuring MBGP. See
Configuring BGP Routing
in the
JUNOSe BGP and MPLS Configuration Guide
for detailed
information about BGP and MBGP.
Investigating Multicast Routes
You can use the
mtrace
command to trace the path that multicast packets take from
a source to a destination through a multicast group address. This command is similar
to the
traceroute
command for investigating unicast routes.
mtrace
■
Use to trace the path that multicast packets take to a destination.
■
Specify the unicast IP address of the source for the packets.
■
To direct the packets to a particular destination, specify the unicast address for
that destination. If you do not specify a destination, the router traces the route
from the device on which you issue the command.
■
To direct the packets through a particular multicast group address, specify that
multicast group address. If you do not specify a multicast group address, the
router traces the route through the MBone audio multicast group.
■
To send the trace to a particular device, specify the IP address of that device. If
you do not specify a response address, the router sends the trace to an IP address
on the router.
■
To investigate a problem at a particular point in the route, specify the maximum
number of hops for the trace. The default number of hops is 64.
■
The trace starts at the destination and works back to the source.
■
Field descriptions
■
Tracing multicast route from
a.a.a.a
to
b.b.b.b
for group
c.c.c.c
using response
address
d.d.d.d
—A description of the trace is as follows:
40
■
BGP Multicasting
JUNOSe 11.1.x Multicast Routing Configuration Guide
Содержание JUNOSE 11.1.X MULTICAST ROUTING
Страница 6: ...vi...
Страница 8: ...viii JUNOSe 11 1 x Multicast Routing Configuration Guide...
Страница 16: ...xvi List of Figures JUNOSe 11 1 x Multicast Routing Configuration Guide...
Страница 18: ...xviii List of Tables JUNOSe 11 1 x Multicast Routing Configuration Guide...
Страница 24: ...2 Internet Protocol Version 4 JUNOSe 11 1 x Multicast Routing Configuration Guide...
Страница 64: ...42 Investigating Multicast Routes JUNOSe 11 1 x Multicast Routing Configuration Guide...
Страница 100: ...78 Monitoring IGMP Proxy JUNOSe 11 1 x Multicast Routing Configuration Guide...
Страница 145: ...Monitoring PIM 123 Chapter 3 Configuring PIM for IPv4 Multicast...
Страница 146: ...124 Monitoring PIM JUNOSe 11 1 x Multicast Routing Configuration Guide...
Страница 166: ...144 Monitoring DVMRP JUNOSe 11 1 x Multicast Routing Configuration Guide...
Страница 168: ...146 Internet Protocol Version 6 JUNOSe 11 1 x Multicast Routing Configuration Guide...
Страница 204: ...182 BGP Multicast JUNOSe 11 1 x Multicast Routing Configuration Guide...
Страница 263: ...Part 3 Index Index on page 243 Index 241...
Страница 264: ...242 Index JUNOSe 11 1 x Multicast Routing Configuration Guide...