type interface-number | register | none } | statistics ] 
*
 command in any view to check the
multicast forwarding table.
l Run the following commands in any view to check the multicast routing table.
– display multicast { vpn-instance vpn-instance-name | all-instance } routing-table
[ group-address [ mask { group-mask | group-mask-length } ] | source-address
[ mask { source-mask | source-mask-length } ] | incoming-interface { interface-type
interface-number | register } | outgoing-interface { include | exclude | match }
{ interface-type interface-number | register | none } ] 
*
 [ outgoing-interface-
number [ number ] ]
– display multicast routing-table [ group-address [ mask { group-mask | group-mask-
length } ] | source-address [ mask { source-mask | source-mask-length } ] | incoming-
interface { interface-type interface-number | register } | outgoing-interface
{ include | exclude | match } { interface-type interface-number | vpn-instance vpn-
instance-name | register | none } ] 
*
 [ outgoing-interface-number [ number ] ]
l Run the display multicast routing-table [ vpn-instance vpn-instance-name ] static
[ config ] [ source-address { mask-length | mask } ] command in any view to check the
static multicast routing table.
l Run the display multicast [ vpn-instance vpn-instance-name | all-instance ] rpf-info
source-address [ group-address ] [ rpt | spt ] command in any view to check the RPF
routing information.
----End
9.7.5 Debugging Multicast Routing and Forwarding
When a fault occurs during IPv4 multicast routing management, run the debugging commands
in the user view and locate the fault based on the debugging information. Debugging affects the
performance of the system. So, after debugging, disable it immediately.
Context
CAUTION
Debugging affects the performance of the system. After debugging, run the undo debugging
all command to disable it immediately.
When a fault occurs when multicast is enabled, run the following debugging commands in the
user view to debug multicast routes and to locate the fault.
Procedure
l Run the following commands in the user view to enable the debugging of multicast
forwarding.
– debugging mfib [ vpn-instance vpn-instance-name | all-instance ] all
– debugging mfib [ vpn-instance vpn-instance-name | all-instance ] { no-cache |
module | packet | register | route | sync | upcall | wrong-iif } [ advanced-acl-
number ]
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 9 IPv4 Multicast Routing Management
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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