3com 3031 Instruccion De Instalación
600
C
HAPTER
46: C
OMMON
M
ULTICAST
C
ONFIGURATION
Three types of multicast routing tables are involved in the multicast
implementation of V2.00: individual multicast routing tables of each multicast
routing protocol; a multicast kernel table integrating the routing information of
those individual routing tables; and a multicast forwarding table in conformity
with the kernel routing table and in charge of the multicast packet forwarding.
implementation of V2.00: individual multicast routing tables of each multicast
routing protocol; a multicast kernel table integrating the routing information of
those individual routing tables; and a multicast forwarding table in conformity
with the kernel routing table and in charge of the multicast packet forwarding.
Multicast forwarding table is mainly used in debugging. Generally, users can
obtain required information by viewing multicast kernel routing table.
obtain required information by viewing multicast kernel routing table.
Tracing the Network
Path of Multicast Data
You can use the
mtracert
command in any view to trace the network path
multicast data take from multicast source to destination receiver and locate the
faults.
faults.
■
If only multicast source address and the last hop address defaults to the address
of a physical interface of the local router, and the group address defaults to
0.0.0.0. In that case, reverse trace hop by hop from the local router to the first
hop router that connects directly to multicast source, following RPF rule .
of a physical interface of the local router, and the group address defaults to
0.0.0.0. In that case, reverse trace hop by hop from the local router to the first
hop router that connects directly to multicast source, following RPF rule .
■
If only multicast source address and the last hop address are specified, the
group address defaults to 0.0.0.0. In that case, reverse trace hop by hop from
the last hop router to the first hop router that connects directly to multicast
source following RPF rule.
group address defaults to 0.0.0.0. In that case, reverse trace hop by hop from
the last hop router to the first hop router that connects directly to multicast
source following RPF rule.
■
If only source address and group address are specified, the last hop address
defaults to that of a physical interface of the local router. In that case, reverse
defaults to that of a physical interface of the local router. In that case, reverse
Display the multicast
forwarding table
forwarding table
display multicast forwarding-table [
group-address [ mask { mask | mask-length }
] | source-address [ mask { mask |
mask-length } ] | incoming-interface {
interface-type interface-number | register }
]*
Display the RPF routing
information
information
display multicast rpf-info source-address
Enable debugging of multicast
packet forwarding
packet forwarding
debugging multicast forwarding
Disable debugging of multicast
packet forwarding
packet forwarding
undo debugging multicast forwarding
Enable debugging of multicast
forwarding status
forwarding status
debugging multicast status-forwarding
Disable debugging of multicast
forwarding status
forwarding status
undo debugging multicast status-forwarding
Enable debugging of multicast
kernel routing
kernel routing
debugging multicast kernel-routing
Disable debugging of multicast
kernel routing
kernel routing
undo debugging multicast kernel-routing
Table 694 Displaying and debugging common multicast configuration
Operation
Command
Table 695 Tracing the network path of multicast data
Operation
Command
Trace the network path multicast
data take from multicast source to
destination receiver
data take from multicast source to
destination receiver
mtracert { source-address } [
last-hop-address ] [ group-address ]