Syntax
debugging multicast forwarding
undo debugging multicast forwarding
View
User view
Parameter
None
Description
Use the debugging multicast forwarding
command to enable multicast packet forwarding debugging functions.
Use the undo debugging multicast
forwarding command to disable the debugging functions.
By default, the debugging function is
disabled.
Example
# Enable multicast packet forwarding
debugging functions.
<H3C> debugging multicast
forwarding
Syntax
debugging multicast kernel-routing
undo debugging multicast kernel-routing
View
User view
Parameter
None
Description
Use the debugging multicast
kernel-routing command to enable multicast kernel routing debugging
functions.
Use the undo debugging multicast
kernel-routing command to disable the debugging functions.
By default, the multicast kernel routing
debugging function is disabled.
Example
# Enable multicast kernel routing debugging
functions.
<H3C> debugging multicast
kernel-routing
Syntax
debugging multicast status-forwarding
undo debugging multicast
status-forwarding
View
User view
Parameter
None
Description
Use the debugging multicast
status-forwarding command to enable multicast forwarding status debugging
functions.
Use the undo debugging multicast
status-forwarding command to disable the debugging functions.
By default, the multicast status debugging
function is disabled.
Example
# Enable multicast forwarding status
debugging functions.
<H3C> debugging multicast
status-forwarding
Syntax
display
multicast forwarding-table [ group-address [
mask { mask | mask-length } ] | source-address [ mask
{ mask | mask-length } ] | incoming-interface { interface-type
interface-number | register } ] *
View
Any view
Parameter
group-address: Multicast group address, used to specify a multicast group,
ranging from 224.0.0.0 to 239.255.255.255.
mask: Mask.
mask-length:
Length of mask. Because “1”s in 32-bit mask are required to be
continuous, the mask in dotted decimal notation format can be replaced by mask-length
(mask-length is the number of continuous “1”s in the mask).
source-address: Unicast IP address of the multicast source.
incoming-interface: Incoming interface of the multicast forwarding entry.
register:
Register interface of PIM-SM.
Description
Use the display multicast
forwarding-table command to view the information of multicast forwarding
table.
source-address and group-address of multicast forwarding table are
displayed in hexadecimal notation format and its incoming and outgoing port
numbers are displayed by virtual port number. This information can be viewed
via display pim interface command.
Related command: display multicast
routing-table.
Example
# Display the multicast forwarding table
information.
<H3C> display multicast
forwarding-table
Syntax
display multicast routing-table [ group-address [ mask { mask | mask-length
} ] | source-address [ mask { mask | mask-length }
] | incoming-interface { interface-type interface-number | register
} ]*
View
Any view
Parameter
group-address: Multicast group address, used to specify a multicast group and
display the corresponding routing table information of the group. The value
ranges from 224.0.0.0 to 239.255.255.255.
source-address: Unicast IP address of the multicast source.
mask: Mask.
mask-length:
Length of mask. Because “1” in 32-bit mask is required to be
continuous, the mask in dotted decimal notation format can be replaced by mask-length
(mask-length is the number of continuous “1”s in the mask).
incoming-interface: Incoming interface of the multicast route entry.
register:
Register interface of PIM-SM.
Description
Use the display multicast routing-table
command to view the information of IP multicast routing table.
This command displays the multicast routing
table information, while the display multicast forwarding-table command
displays the multicast forwarding table information.
The entry (S, G) in the multicast routing
table, i.e., (multicast source, multicast group) acts as the independent entry
in the table. Each entry has a unique Upstream, indicating the interface
through which RPF goes to the multicast source. Each entry has also a
Downstream List, indicating which interfaces need multicast forwarding. The
related information about (S, G) includes:
l
proto: the multicast protocol number which
possesses the (S, G) (in hexadecimal notation format).
l
Flags: all kinds of flags, such as RPT 0x1, WC
0x2, SPT 0x4, NEG CACHE 0x8 and JOIN SUPP 0x10. All the flags are marked by
binary “bit”. In which, RPT indicates the (S, G) is in the shared
tree status. WC is the abbreviation of wildcard. SPT indicates the shortest
path tree. NEG CACHE indicates the cache record that the downstream interface
list is null. JOIN SUPP indicates the prune suppression status.
Example
# Display the corresponding route entry
information of multicast group in the multicast routing table.
<H3C> display multicast
routing-table
Multicast Routing Table
Total 1 entry
(10.10.1.2, 225.1.1.1)
UpTime: 00:01:28, Timeout in 278
sec
Upstream interface:
Ethernet0/0/0(10.10.1.20)
Downstream interface list:
LoopBack0(20.20.20.30),
Protocol 0x1: IGMP
Syntax
display multicast routing-table static [ config ] [ source-address [ mask | mask-length
] ]
View
Any view
Parameter
config: When
this parameter is chosen, all the routing information configured will be
displayed. If this parameter is not chosen, only effective routing
information is displayed.
source-address: IP address of the multicast source.
mask: Mask.
mask-length:
Length of mask. Because “1”s in 32-bit mask are required to be
continuous, the mask in dotted decimal notation format can be replaced by mask-length
(mask-length is the number of continuous “1”s in the mask).
Description
Use the display multicast routing-table
static command to view the configuration information of static multicast
route.
Example
# Display the configuration information of
static multicast route.
<H3C> display multicast
routing-table static
100.10.0.0/16
RPF interface =
10.10.1.20(Ethernet0/0/0), RPF neighbor = 10.10.1.20
Matched routing protocol =
<none>, route-policy = <none>, preference = 1
Running config = ip
rpf-route-static 100.10.0.0 16 Ethernet0/0/0 preference 1
Syntax
display
multicast rpf-info source-address
View
Any view
Parameter
source-address: IP address of the multicast source.
Description
Use the display multicast rpf-info
command to view the Reverse Path Forwarding (RPF) routing information for
specified multicast source.
Example
# Display all the RPF routing information.
<H3C> display multicast
rpf-info 192.193.194.192
Multicast source's RPF route
information about 192.193.194.192
RPF interface: InLoopBack0, RPF
neighbor: 127.0.0.1
Referenced route/mask:
192.193.194.192/32
Referenced route type: unicast
(DIRECT)
RPF-route selecting rule:
preference-preferred
Syntax
mtracert source-address [ last-hop-address ] [ group-address ]
View
Any view
Parameter
source-address: Address of the multicast source.
last-hop-address: Unicast address, which is the starting address of path tracing.
This address must be an interface address of a hop router. By default, it is a
physical interface address of the local router.
group-address: Address of multicast group. By default, the value is 0.0.0.0.
Description
Use the mtracert
command to trace the network path from the multicast source to the destination
receiver along Multicast Distribution Tree, according to either the multicast
kernel routing table or RPF rule to the source. This command can help to locate
the faults, such as information loss and configuration error.
The trace mode to the group address of
0.0.0.0 is called weak trace mode.
Example
# Trace the path reversely from the local
hop router 18.110.0.1 to the multicast source 10.10.1.2 in weak trace mode.
<H3C> mtracert 10.10.1.2
Type Ctrl+C to abort
Mtrace from 10.10.1.2 to 18.110.0.1
via RPF
Querying full reverse path...
-1 18.110.0.1
Incoming Interface Address:
18.110.0.1
Previous-Hop Router Address:
18.110.0.2
Input packet count on incoming
interface: 0
Output packet count on outgoing
interface: 0
Total number of packets for this
source-group pair: 0
Protocol: PIM
Forwarding TTL: 0
Forwarding Code: No error
-2 18.110.0.2
Incoming Interface Address:
11.110.0.2
Previous-Hop Router Address: 11.110.0.4
Input packet count on incoming
interface: 0
Output packet count on outgoing
interface: 0
Total number of packets for this
source-group pair: 0
Protocol: PIM
Forwarding TTL: 0
Forwarding Code: No error
-3 11.110.0.4
Incoming Interface Address:
10.10.1.3
Previous-Hop Router Address:
0.0.0.0
Input packet count on incoming
interface: 0
Output packet count on outgoing
interface: 0
Total number of packets for this
source-group pair: 0
Protocol: PIM
Forwarding TTL: 0
Forwarding Code: No error
# Trace reversely the path information of
multicast group 225.1.1.1 from the multicast source 10.10.1.3 to the
destination address 12.110.0.2.
<H3C> mtracert 10.10.1.3
12.110.0.2 225.1.1.1
Type Ctrl+C to abort
Mtrace from 10.10.1.3 to 12.110.0.2
via group 225.1.1.1
Querying full reverse path...
-1 12.110.0.2
Incoming Interface Address:
11.110.0.2
Previous-Hop Router Address:
11.110.0.4
Input packet count on incoming
interface: 316
Output packet count on outgoing
interface: 135
Total number of packets for this
source-group pair: 4
Protocol: PIM
Forwarding TTL: 0
Forwarding Code: No error
-2 11.110.0.4
Incoming Interface Address:
127.0.0.5
Previous-Hop Router Address:
0.0.0.0
Input packet count on incoming
interface: 0
Output packet count on outgoing
interface: 0
Total number of packets for this
source-group pair: 4
Protocol: Unknown
Forwarding TTL: 0
Forwarding Code: No error
Syntax
multicast minimum-ttl ttl-value
undo multicast minimum-ttl
View
Interface view
Parameter
ttl-value:
The minimum TTL value, ranging from 0 to 255.
Description
Use the multicast minimum-ttl
command to configure the minimum TTL value for multicast forwarding.
Use the undo multicast
minimum-ttl command to remove the minimum TTL value configured.
By default, no minimum TTL value for
multicast forwarding is configured.
Example
# Configure the minimum TTL value for
multicast forwarding to 8.
[H3C-Ethernet1/0/1] multicast
minimum-ttl 8
Syntax
multicast packet-boundary acl-number
undo multicast packet-boundary
View
Interface view
Parameter
acl-number:
Number of basic or advanced ACL, ranging from 2000 to 3999.
Description
Use the multicast packet-boundary
command to configure a multicast forwarding boundary.
Use the undo multicast
packet-boundary command to remove the multicast forwarding boundary
configured.
By default, no multicast forwarding
boundary is configured.
You can set boundary conditions for
multicast packets on an interface via basic or advanced Access Control List
(ACL). Packets denied by the ACL will be discarded. The source address of a
multicast packet can be filtered through the basic ACL. Both the source address
and the destination address (source group address) of a multicast packet can be
filtered through the advanced ACL.
Example
# Set boundary conditions for multicast
packets through the basic ACL 2001.
[H3C-Ethernet1/0/1] multicast
packet-boundary 2001
Syntax
multicast route-limit limit
View
System view
Parameter
limit: Limit
of multicast routing table capacity, ranging from 0 to MAX_MROUTE_LIMIT. In
which, MAX_MROUTE_LIMIT differs with the different router types.
Description
Use the multicast route-limit
command to limit the multicast routing table capacity. If the capacity exceeds
the limit, the router will discard protocols and data packets of the
newly-added (S, G).
By default, the limit of multicast routing
table capacity is MAX_MROUTE_LIMIT.
If the number of route entries in the
routing table has exceeded the configured number when configuring the command,
the previous route entry in the routing table will not be deleted. The system
will prompt “The number of current route entries is more than that
configured.”
If this command is executed repeatedly, the
new configuration will overwrite the previous one.
Example
# Limit the multicast routing table
capacity to 1000.
[H3C] multicast route-limit 1000
Syntax
multicast routing-enable
undo multicast routing-enable
View
System view
Parameter
None
Description
Use the multicast routing-enable
command to enable IP multicast routing.
Use the undo multicast routing-enable
command to disable IP multicast routing.
By default, IP multicast routing is disabled.
the system will not forward any multicast
packet when IP multicast routing is disabled.
Related command: pim dm and pim
sm.
Example
# Enable IP
multicast routing.
<H3C>
system-view
[H3C]
multicast routing-enable
Syntax
reset multicast forwarding-table [ statistics ] { all | { group-address [ mask
{ group-mask | group-mask-length } ] | source-address [ mask
{ source-mask | source-mask-length } ] | { incoming-interface
interface-type interface-number } | { slot slot-number
} } * }
View
User view
Parameter
statistics:
If this parameter is used, the statistics of MFC forwarding entries will be
cleared. Otherwise, the MFC forwarding entries will be cleared.
all: All the
MFC forwarding entries.
group-address: Address of the specified group.
group-mask:
Address mask of the specified group.
group-mask-length: Address mask length of the specified group.
source-address: Address of the specified source.
source-mask:
Address mask of the specified source.
source-mask-length: Address mask length of the specified source.
incoming-interface: Incoming interface of the specified forwarding entry.
interface-type interface-number: Interface type and interface number.
slot-number:
Number of the slot where the interface board resides. This parameter is only
present in the distributed router.
Description
Use the reset multicast forwarding-table
command to clear MFC forwarding entries or the statistics of MFC forwarding
entries.
The sequence of group-address and source-address
can be reversed, but the input group-address and source-address
must be valid. Otherwise, the system will prompt input error.
Related
command: reset pim routing-table, reset multicast routing-table, display
multicast forwarding-table.
Example
# Clear the forwarding entry whose group
address is 225.5.4.3 from the MFC forwarding table.
<H3C> reset multicast
forwarding-table 225.5.4.3
# Clear the statistics of the forwarding
entry whose group address is 225.5.4.3 from MFC forwarding table.
<H3C> reset multicast
forwarding-table statistics 225.5.4.3
Syntax
reset multicast routing-table { all | { group-address [ mask { group-mask
| group-mask-length } ] | source-address [ mask { source-mask
| source-mask-length } ] | { incoming-interface interface-type
interface-number } } * }
View
User view
Parameter
all: All the
route entries in multicast kernel routing table.
group-address: Address of the specified group.
group-mask:
Address mask of the specified group.
group-mask-length: Address mask length of the specified group.
source-address: Address of the specified source.
source-mask:
Address mask of the specified source.
source-mask-length: Address mask length of multicast source.
incoming-interface: Incoming interface of the specified route entry.
interface-type interface-number: Interface type and interface number.
Description
Use the reset multicast routing-table
command to clear the route entry in the multicast kernel routing table and
remove the corresponding forwarding entry in MFC.
The sequence of group-address and source-address
can be reversed, but the input group-address and source-address
must be valid. Otherwise, the system will prompt input error.
Related
command: reset pim routing-table, reset multicast forwarding-table,
display multicast forwarding-table.
Example
# Clear the route entry whose group address
is 225.5.4.3 from the multicast kernel routing table.
<H3C> reset multicast
routing-table 225.5.4.3
Syntax
debugging igmp { all | event | host | packet | timer
}
undo debugging igmp { all | event | host | packet | timer
}
View
User view
Parameter
all: All
debugging information of IGMP.
event:
Debugging for IGMP events.
host:
Debugging for IGMP hosts.
packet:
Debugging for IGMP messages.
timer:
Debugging for IGMP timers.
Description
Use the debugging igmp command to
enable IGMP debugging.
Use the undo debugging igmp command
to disable IGMP debugging.
By default, IGMP debugging is disabled.
Example
# Enable all IGMP debugging functions
<H3C> debugging igmp all
Syntax
display igmp group [ group-address | interface interface-type
interface-number | local ]
View
Any view
Parameter
group-address: Multicast group address.
interface-type
interface-number: Interface type and interface
number of the router, used to specify the interface.
local:
Displays the information of the local interface which receives and sends
multicast data.
verbose:
Displays detailed IGMP group information. This option displays the information
of multicast groups on subnets attached to IGMPv3-enabled interfaces only.
Description
Use the display igmp group command
to view the member information of the IGMP multicast group.
You can specify to view the information of
a group or the member information of the multicast group on an interface. The
information displayed includes the multicast groups joined through IGMP and
those joined statically through command lines by the downstream host.
Related command: igmp host-join.
Example
# Display the member information of the
directly connected sub-network.
<H3C> display igmp group
LoopBack0 (20.20.20.20): Total 3 IGMP
Groups reported:
Group Address Last Reporter
Uptime Expires
225.1.1.1 20.20.20.20
00:02:04 00:01:15
225.1.1.3 20.20.20.20
00:02:04 00:01:15
225.1.1.2 20.20.20.20
00:02:04 00:01:17
Table 2-1
Description on the fields of the display ip igmp
group command
|
Item
|
Description
|
|
Group
address
|
Multicast
group address
|
|
Last
Reporter
|
Report the
last host which becomes the multicast group member
|
|
Uptime
|
The time
since the multicast group is found (hour, minute, second)
|
|
Expires
|
The
predicted time when the record will be removed from the IGMP group table
(hour, minute, second)
|
Syntax
display
igmp interface [ interface-type interface-number
]
View
Any view
Parameter
interface-type interface-number: Interface type and interface number of the router, used to specify
the interface. If the parameters are not specified, information about all the
interfaces running IGMP will be displayed.
Description
Use the display igmp interface
command to view the IGMP configuration and running information on an interface.
The information displayed through display
igmp interface will be different according to the configuration of IGMP
proxy on an interface.
l
If the interface is neither a proxy nor a
client, the configuration of IGMP Proxy will not be displayed.
l
If the interface is a proxy, all the clients
will be displayed.
l
If the interface is a client, the proxy will be
displayed.
Example
# Display the IGMP configuration and
running information on an interface.
<H3C> display igmp interface
Ethernet0/0/0 (10.10.1.20):
IGMP is enabled
Current IGMP version is 2
Value of query interval for IGMP(in
seconds): 60
Value of other querier time out for
IGMP(in seconds): 120
Value of maximum query response
time for IGMP(in seconds): 10
Policy to accept IGMP reports: none
Querier for IGMP: 10.10.1.10
Total 2 IGMP groups reported
LoopBack0 (20.20.20.30):
IGMP is enabled
Current IGMP version is 2
Value of query interval for IGMP(in
seconds): 60
Value of other querier time out for
IGMP(in seconds): 120
Value of maximum query response
time for IGMP(in seconds): 10
Policy to accept IGMP reports: none
Querier for IGMP: 20.20.20.30 (this
router)
No IGMP group reported
Syntax
display igmp local
View
Any view
Parameter
local:
Information of the local interface which receives and sends multicast data.
Description
Use the display igmp local command
to view the IGMP configuration and running information of the local interface
which receives and sends multicast data.
Example
# Display the IGMP configuration and
running information of the local interface which receives and sends multicast
data.
<H3C> display igmp local
Mcast_Out_IF (127.0.0.6):
IGMP is enabled on interface
Current IGMP version is 2
No IGMP group reported
Mcast_In_IF (127.0.0.5):
IGMP is disabled on interface
Syntax
igmp enable
undo igmp
enable
View
Interface view
Parameter
None
Description
Use the igmp enable command to
enable IGMP on an interface.
Use the undo igmp enable
command to disable IGMP on an interface.
By default, IGMP is disabled on an
interface.
Only after multicast is enabled, can this
command take effect. After this command is configured, the configuration of
other attributes of IGMP can be performed.
Related command: multicast
routing-enable.
Example
# Enable IGMP on interface Ethernet0/0/0.
[H3C-Ethernet0/0/0] igmp enable
Syntax
igmp group-limit limit
undo igmp group-limit
View
Interface view
Parameter
limit:
Number of IGMP groups, ranging from 0 to MAX_IF_IGMP_GROUP_LIMIT. The value of
MAX_IF_IGMP_GROUP_LIMIT on routers is MAX_MROUTE_LIMIT, which differs with the
different router types.
Description
Use the igmp group-limit command to
limit the number of IGMP groups joined on the interface. If the number exceeds
the limit, the router will not process the joined IGMP packet any more.
Use the undo igmp group-limit
command to restore the default configuration.
By default, the maximum number of IGMP
groups joined on the interface is 1024.
If the number of IGMP groups joined on the
interface has exceeded the configuration value during configuration, the
previously joined IGMP groups will not be deleted.
If this command is executed repeatedly, the
new configuration will overwrite the previous one.
This command
is not supported on an IGMPv3-enabled interface.
Example
# Limit the maximum number of IGMP groups
joined on the interface Ethernet1/0/0 to 100.
[H3C-Ethernet1/0/0] igmp group-limit
100
Syntax
igmp group-policy acl-number [ 1 | 2 ]
undo igmp
group-policy
View
Interface view
Parameter
acl-number:
Number of basic IP ACL, defining the range of a multicast group. The value
ranges from 2000 to 2999.
1: IGMP
version 1.
2: IGMP
version 2 (default).
Description
Use the igmp group-policy command to
set the filter of multicast groups on an interface to control the accessing to
the IP multicast groups.
Use the undo igmp group-policy
command to remove the filter configured.
By default, no filter is configured, that
is, a host can join any multicast group.
If you do not want the hosts on the network
that the interface is on to join some multicast groups, you can use this
command to limit the range of the multicast groups served by the interface.
Related command: igmp host-join.
Example
# Permit the hosts on the interface
Ethernet1/0/0 to join multicast group 225.1.1.1 only.
[H3C] acl number 2005
[H3C-acl-basci-2005] rule permit
source 225.1.1.1 0
[H3C-acl-basci-2005] quit
[H3C] interface ethernet 1/0/0
[H3C-Ethernet1/0/0] igmp group-policy
2005
Syntax
igmp
host-join group-address
undo igmp
host-join group-address
View
Interface view
Parameter
group-address: Multicast address of the multicast group that an interface will
join.
Description
Use the igmp host-join command to
enable an interface of a router to join a multicast group.
Use the undo igmp host-join
command to disable the configuration.
By default, an interface does not join any
multicast group.
On one router, up to 1024 interfaces can be
configured with igmp host-join command at best.
This command is not supported on an
IGMPv3-enabled interface.
Related command: igmp group-policy.
Example
# Configure Ethernet1/0/0 to join the
multicast group 255.0.0.1.
[H3C-Ethernet1/0/0] igmp host-join
225.0.0.1
Syntax
igmp lastmember-queryinterval seconds
undo igmp lastmember-queryinterval
View
Interface view
Parameter
seconds:
Interval at which IGMP querier sends the IGMP group-specific query message when
it receives IGMP Leave message from the host, in second. The value ranges from
1 to 5 seconds. By default, the value is 1 second.
Description
Use the igmp
lastmember-queryinterval command to set the interval at which IGMP querier
sends the IGMP group-specific query message when it receives IGMP Leave message
from the host.
Use the undo igmp
lastmember-queryinterval command to restore the default value.
On a multi-access network where multiple
hosts and multicast routers are present, the query router (querier for short)
takes charge of maintaining IGMP group membership on an interface. When an
IGMPv2 or IGMPv3 host leaves a group, the host sends IGMP Leave message. When
the IGMP querier receives the message, it must send robust-value IGMP
group-specific query messages at the interval of seconds configured via igmp
lastmember-queryinterval command (if the command is not configured, seconds
is 1) and the robustness variable robust-value configured via igmp
robust-count (if the command is not configured, robust-value is 2).
If another host receives the IGMP group-specific query message from IGMP
querier and is interested in the group, it will send an IGMP Membership Report
message within the maximum response time carried in the message. If the IGMP
querier receives an IGMP Membership Report message within the time robust-value
x seconds, it will go on maintaining the group membership. If not, it
will regard the group has timed out and stop maintaining the group membership.
As an IGMPv1 host does not send a Leave
message when it leaves a group, this command is valid only when the IGMP
querier is running IGMPv2 or IGMPv3.
Related command: igmp robust-count and
display igmp interface.
Example
# Configure the query interval of the
querier for the last group member on the interface Ethernet1/0/0 to 3 seconds.
[H3C-Ethernet1/0/0] igmp
lastmember-queryinterval 3
Syntax
igmp max-response-time seconds
undo igmp max-response-time
View
Interface view
Parameter
seconds: The
maximum response time in the IGMP query message in second, ranging from 1 to
25. By default, the value is 10 seconds.
Description
Use the igmp
max-response-time command to configure the maximum response time contained
in the IGMP query message.
Use the undo igmp
max-response-time command to restore the default value.
The maximum query response time determines
the period for a router to detect quickly that there are no longer directly
connected group members in a LAN.
Related command: display igmp group.
Example
# Configure the maximum response time to 8
seconds.
[H3C-Ethernet1/0/0] igmp
max-response-time 8
Syntax
igmp proxy interface-type
interface-number
undo igmp proxy
View
Interface view
Parameter
interface-type: Proxy interface type.
interface-number: Proxy interface number.
Description
Use the igmp proxy command to
specify an interface of a leaf network router as the IGMP proxy of another
interface.
Use the undo igmp proxy command to
remove the configuration.
By default, IGMP proxy function is
disabled.
You must enable PIM on the interface before
you configure the igmp proxy command. An interface cannot act as the
IGMP proxy of two or more other interfaces at the same time.
If an interface is configured with IGMP
proxy for multiple times, the last one overrides all the previous
configurations.
This command is not supported on an
IGMPv3-enabled interface.
Related command: pim neighbor-policy.
Example
# Configure
the IGMP proxy of router Ethernet0/0/0 to Ethernet1/0/0.
[H3C-Ethernet0/0/0]
igmp proxy ethernet 1/0/0
Syntax
igmp robust-count robust-value
undo igmp robust-count
View
Interface view
Parameter
robust-value:
IGMP robustness variable, indicating the times IGMP querier sends the IGMP
group-specific query message when it receives IGMP Leave message from the host.
The value ranges from 2 to 5. By default, the value is 2.
Description
Use the igmp robust-count command to
set the times IGMP querier sends the IGMP group-specific query message when it
receives IGMP Leave message from the host.
Use the undo igmp robust-count
command to restore the default value.
On a multi-access network w
