Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510 Table of Contents
i
Table of Contents
Chapter 1 IGMP Snooping Configuration Commands............................................................... 1-1
1.1 IGMP Snooping Configuration Commands .......................................................................1-1
1.1.1 display igmp-snooping configuration.......................................................................1-1
1.1.2 display igmp-snooping group..................................................................................1-2
1.1.3 display igmp-snooping statistics..............................................................................1-3
1.1.4 igmp-snooping.........................................................................................................1-4
1.1.5 igmp-snooping fast-leave........................................................................................1-5
1.1.6 igmp-snooping general-query source-ip .................................................................1-6
1.1.7 igmp-snooping group-limit.......................................................................................1-7
1.1.8 igmp-snooping group-policy....................................................................................1-8
1.1.9 igmp-snooping host-aging-time.............................................................................1-10
1.1.10 igmp-snooping max-response-time.....................................................................1-11
1.1.11 igmp-snooping querier ........................................................................................1-12
1.1.12 igmp-snooping query-interval..............................................................................1-12
1.1.13 igmp-snooping router-aging-time........................................................................1-13
1.1.14 reset igmp-snooping statistics.............................................................................1-14
1.1.15 service-type multicast..........................................................................................1-14
Chapter 2 Common IP Multicast Configuration Commands.....................................................2-1
2.1 Common IP Multicast Configuration Commands............................................................... 2-1
2.1.1 display mpm forwarding-table.................................................................................2-1
2.1.2 display mpm group..................................................................................................2-2
2.1.3 display multicast forwarding-table...........................................................................2-3
2.1.4 display multicast routing-table.................................................................................2-5
2.1.5 display multicast-source-deny.................................................................................2-6
2.1.6 multicast route-limit .................................................................................................2-7
2.1.7 multicast routing-enable..........................................................................................2-8
2.1.8 multicast-source-deny.............................................................................................2-9
2.1.9 reset multicast forwarding-table............................................................................2-10
2.1.10 reset multicast routing-table................................................................................2-11
Chapter 3 Multicast MAC Address Entry Configuration Commands.......................................3-1
3.1 Multicast MAC Address Entry Configuration Commands..................................................3-1
3.1.1 mac-address multicast interface .............................................................................3-1
3.1.2 mac-address multicast vlan.....................................................................................3-2
3.1.3 display mac-address multicast static.......................................................................3-2
Chapter 4 Unknown Multicast Drop Configuration Command.................................................4-1
4.1 Unknown Multicast Drop Configuration Command............................................................4-1
4.1.1 unknown-multicast drop enable ..............................................................................4-1
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510 Table of Contents
ii
Chapter 5 IGMP Configuration Commands................................................................................5-1
5.1 IGMP Configuration Commands........................................................................................5-1
5.1.1 display igmp group..................................................................................................5-1
5.1.2 display igmp interface .............................................................................................5-2
5.1.3 igmp enable.............................................................................................................5-3
5.1.4 igmp group-limit.......................................................................................................5-4
5.1.5 igmp group-policy....................................................................................................5-5
5.1.6 igmp group-policy vlan............................................................................................5-6
5.1.7 igmp host-join port...................................................................................................5-7
5.1.8 igmp host-join vlan ..................................................................................................5-8
5.1.9 igmp lastmember-queryinterval...............................................................................5-9
5.1.10 igmp max-response-time.....................................................................................5-10
5.1.11 igmp proxy...........................................................................................................5-11
5.1.12 igmp robust-count ...............................................................................................5-12
5.1.13 igmp timer other-querier-present.........................................................................5-13
5.1.14 igmp timer query..................................................................................................5-14
5.1.15 igmp version........................................................................................................5-15
5.1.16 reset igmp group .................................................................................................5-16
Chapter 6 PIM Configuration Commands...................................................................................6-1
6.1 PIM Configuration Commands...........................................................................................6-1
6.1.1 bsr-policy.................................................................................................................6-1
6.1.2 c-bsr ........................................................................................................................6-2
6.1.3 c-rp..........................................................................................................................6-3
6.1.4 crp-policy.................................................................................................................6-4
6.1.5 display pim bsr-info .................................................................................................6-5
6.1.6 display pim interface ...............................................................................................6-6
6.1.7 display pim neighbor ...............................................................................................6-7
6.1.8 display pim routing-table.........................................................................................6-8
6.1.9 display pim rp-info...................................................................................................6-9
6.1.10 pim.......................................................................................................................6-11
6.1.11 pim bsr-boundary ................................................................................................6-11
6.1.12 pim dm.................................................................................................................6-12
6.1.13 pim neighbor-limit................................................................................................6-13
6.1.14 pim neighbor-policy.............................................................................................6-14
6.1.15 pim sm.................................................................................................................6-14
6.1.16 pim timer hello.....................................................................................................6-15
6.1.17 register-policy......................................................................................................6-16
6.1.18 reset pim neighbor ..............................................................................................6-17
6.1.19 reset pim routing-table ........................................................................................6-17
6.1.20 spt-switch-threshold ............................................................................................6-19
6.1.21 source-policy.......................................................................................................6-20
6.1.22 static-rp................................................................................................................6-21
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510 Table of Contents
iii
Chapter 7 MSDP Configuration Commands............................................................................... 7-1
7.1 MSDP Configuration Commands.......................................................................................7-1
7.1.1 cache-sa-enable......................................................................................................7-1
7.1.2 display msdp brief ...................................................................................................7-1
7.1.3 display msdp peer-status........................................................................................7-2
7.1.4 display msdp sa-cache............................................................................................7-3
7.1.5 display msdp sa-count ............................................................................................7-5
7.1.6 import-source ..........................................................................................................7-6
7.1.7 msdp........................................................................................................................7-6
7.1.8 msdp-tracert............................................................................................................7-7
7.1.9 mtracert...................................................................................................................7-9
7.1.10 originating-rp .......................................................................................................7-10
7.1.11 peer description...................................................................................................7-11
7.1.12 peer mesh-group.................................................................................................7-11
7.1.13 peer minimum-ttl..................................................................................................7-12
7.1.14 peer request-sa-enable.......................................................................................7-13
7.1.15 peer sa-cache-maximum.....................................................................................7-13
7.1.16 peer connect-interface ........................................................................................7-14
7.1.17 peer sa-policy......................................................................................................7-15
7.1.18 peer sa-request-policy.........................................................................................7-16
7.1.19 reset msdp peer ..................................................................................................7-17
7.1.20 reset msdp sa-cache...........................................................................................7-17
7.1.21 reset msdp statistics............................................................................................7-18
7.1.22 shutdown.............................................................................................................7-18
7.1.23 static-rpf-peer......................................................................................................7-19
7.1.24 timer retry............................................................................................................7-20
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-1
Chapter 1 IGMP Snooping Configuration
Commands
Note:
z AmongS3600 series Ethernet switches,S3600-EI series support all the multicast
protocols listed in this manual, whileS3600-SI series only support IGMP Snooping
z An Ethernet switch serves as a router when an IP multicast protocol is running on it.
The routers mentioned here refer to common routers and Layer 3 Ethernet switches
running an IP multicast protocol.
1.1 IGMP Snooping Configuration Commands
1.1.1 display igmp-snooping configuration
Syntax
display igmp-snooping configuration
View
Any view
Parameter
None
Description
Use the display igmp-snooping configuration command to display IGMP Snooping
configuration information.
When IGMP Snooping is enabled on the switch, this command displays the following
information: IGMP Snooping status, aging time of the router port, query response
timeout time, and aging time of multicast member ports.
Related command: igmp-snooping.
Example
# Display IGMP Snooping configuration information on the switch.
<H3C> display igmp-snooping configuration
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-2
Enable IGMP-Snooping.
The router port timeout is 105 second(s).
The max response timeout is 10 second(s).
The host port timeout is 260 second(s).
The above-mentioned information shows: IGMP Snooping is enabled, the aging time of
the router port is 105 seconds, the query response timeout time is 10 seconds, and the
aging time of multicast member ports is 260 seconds.
1.1.2 display igmp-snooping group
Syntax
display igmp-snooping group [ vlan vlan-id ]
View
Any view
Parameter
vlan-id: VLAN under which the multicast group information is to be displayed. If you do
not provide this argument, this command displays the multicast group information of all
VLANs.
Description
Use the display igmp-snooping group command to display information about the IP
and MAC multicast groups under the specified VLAN (with vlan vlan-id) or all VLANs
(without vlan vlan-id).
This command displays the following information: VLAN ID, router port, IP multicast
group address, member ports included in the IP multicast group, MAC multicast group,
MAC multicast group address, and member ports included in the MAC multicast group.
Example
# Display the information about the multicast groups under all the VLANs.
<H3C> display igmp-snooping group
Total 1 IP Group(s).
Total 1 MAC Group(s).
Vlan(id):99.
Total 1 IP Group(s).
Total 1 MAC Group(s).
Static Router port(s):
Ethernet1/0/11
Dynamic Router port(s):
Ethernet1/0/22
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-3
IP group(s):the following ip group(s) match to one mac group.
IP group address:228.0.0.0
Static host port(s):
Ethernet1/0/23
Dynamic host port(s):
Ethernet1/0/10
MAC group(s):
MAC group address:0100-5e00-0000
Host port(s):Ethernet1/0/10 Ethernet1/0/23
Table 1-1 Description on the fields of the display igmp-snooping group command
Field Description
Total 1 IP Group(s).
Total 1 MAC Group(s).
Total number of IP multicast groups and
MAC multicast groups
Vlan(id):
ID of the VLAN whose multicast group
information is displayed
Static Router port(s): Static router port
Dynamic Router port(s): Dynamic router port
IP group address: IP address of a multicast group
MAC group(s): MAC multicast group
MAC group address: Address of a MAC multicast group
Host port(s) Member ports
1.1.3 display igmp-snooping statistics
Syntax
display igmp-snooping statistics
View
Any view
Parameter
None
Description
Use the display igmp-snooping statistics command to display IGMP Snooping
statistics.
This command displays the following information: the numbers of the IGMP general
query packets, IGMP group-specific query packets, IGMPv1 report packets, IGMPv2
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-4
report packets, IGMP leave packets and error IGMP packets received, and the number
of the IGMP group-specific query packets sent.
Related command: igmp-snooping.
Example
# Display IGMP Snooping statistics.
<H3C> display igmp-snooping statistics
Received IGMP general query packet(s) number:0.
Received IGMP specific query packet(s) number:0.
Received IGMP V1 report packet(s) number:0.
Received IGMP V2 report packet(s) number:0.
Received IGMP leave packet(s) number:0.
Received error IGMP packet(s) number:0.
Sent IGMP specific query packet(s) number:0.
The information above shows that IGMP receives:
z zero IGMP general query packets
z zero IGMP specific query packets
z zero IGMPv1 report packets
z zero IGMPv2 report packets
z zero IGMP leave packets
z zero IGMP error packets
IGMP Snooping sends:
z zero IGMP specific query packets
1.1.4 igmp-snooping
Syntax
igmp-snooping { enable | disable }
View
System view
Parameter
enable: Enables the IGMP Snooping feature.
disable: Disables the IGMP Snooping feature.
Description
Use the igmp-snooping enable command to enable the IGMP Snooping feature.
Use the igmp-snooping disable command to disable the IGMP Snooping feature.
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-5
By default, the IGMP Snooping feature is disabled.
Caution:
z To configure IGMP Snooping in VLAN view, you should first enable IGMP Snooping
globally in system view, and then enable IGMP Snooping in VLAN view. Otherwise,
the IGMP Snooping function does not take effect.
z If you enable both IGMP Snooping and VLAN VPN in a VLAN, IGMP query
messages may fail to pass the VLAN.
Example
# Enable the IGMP Snooping feature on the switch.
<H3C>system-view
System View: return to User View with Ctrl+Z.
[H3C] igmp-snooping enable
Enable IGMP-Snooping ok.
1.1.5 igmp-snooping fast-leave
Syntax
igmp-snooping fast-leave [ vlan vlan-list ]
undo igmp-snooping fast-leave [ vlan vlan-list ]
View
System view, Ethernet port view
Parameter
vlan-list: List of VLANs. You can specify multiple VLANs by providing this argument in
the form of vlan-list = { vlan-id [ to vlan-id ] } & < 1-10 >, where vlan-id is the ID of the
VLAN, in the range of 1 to 4,094 and & < 1-10 > means that you can provide up to 10
VLANs/VLAN ranges for this argument.
Description
Use the igmp-snooping fast-leave command to enable IGMP fast leave processing.
Use the undo igmp-snooping fast-leave command to cancel the configuration.
By default, IGMP fast leave processing is disabled.
Normally, upon receipt of an IGMP Leave message, Switch does not immediately
remove the port from the multicast group, but sends a group-specific query message. If
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-6
no response is received in a given period, it then removes the port from the multicast
group.
After this command is executed, upon receipt of an IGMP Leave packet, Switch
removes the port from the multicast group directly. When the port is connected to only
one user, enabling IGMP fast leave processing can save bandwidth.
Note:
z This feature is effective for IGMPv2-enabled clients only.
z When this feature is enabled, if one of the multiple users on a port leaves, the
multicast services for the other users in the same multicast group may be
interrupted.
Example
# Enable IGMP fast leave processing on Ethernet1/0/1.
<H3C>system-view
System View: return to User View with Ctrl+Z.
[H3C] interface Ethernet 1/0/1
[H3C-Ethernet1/0/1] igmp-snooping fast-leave
1.1.6 igmp-snooping general-query source-ip
Syntax
igmp-snooping general-query source-ip { current-interface | ip-address }
undo igmp-snooping general-query source-ip
View
VLAN view
Parameter
current-interface: Specifies the current interface whose IP address is selected by the
Layer 2 multicast switch.
ip-address: Source IP address of the general query packet that the Layer 2 multicast
switch sends.
Description
Use the igmp-snooping general-query source-ip current-interface command to
configure the Layer 2 multicast switch to use the IP address of the current VLAN
interface as the source IP address of the general query packets that the Layer 2
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-7
multicast switch sends. If no IP address is configured on the current VLAN interface,
the default IP address 0.0.0.0. is used as the default source IP address.
Use the igmp-snooping general-query source-ip ip-address command to configure
the Layer 2 multicast switch to use the specified IP address as the source IP address
when sending general query packets.
Use the undo igmp-snooping general-query source-ip command to configure the
Layer 2 multicast switch to use the default IP address as the source address when
sending general query packets.
These commands are effective after the IGMP Snooping querier is enabled on the
switch; otherwise, the switch cannot send general query packets.
By default, the Layer 2 multicast switch sends general query packets with the source IP
address 0.0.0.0.
Example
# Configure the Layer 2 multicast switch to send general query packets with the source
IP address 2.2.2.2 in VLAN 3.
<H3C> system-view
System view, return to user view with Ctrl+Z.
[H3C] igmp-snooping enable
[H3C] vlan 3
[H3C-vlan3] igmp-snooping enable
[H3C-vlan3] igmp-snooping querier
[H3C-vlan3] igmp-snooping general-query source-ip 2.2.2.2
1.1.7 igmp-snooping group-limit
Syntax
igmp-snooping group-limit limit [ vlan vlan-list ] [ overflow-replace ]
undo igmp-snooping group-limit [ vlan vlan-list ]
View
Ethernet port view
Parameter
limit: Maximum number of multicast groups the port can join, in the range of 1 to 256.
overflow-replace: Allows a new multicast group to replace an existing multicast group
and the multicast group with the lowest IP address is replaced first.
vlan-list: List of VLANs. You can specify multiple VLANs by providing this argument in
the form of vlan-list = { vlan-id [ to vlan-id ] }&<1-10>, where &<1-10> means that you
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-8
can provide up to 10 VLANs/VLAN ranges for this argument. VLAN ID ranges from 1 to
4094.
Description
Use the igmp-snooping group-limit command to define the maximum number of
multicast groups the port can join.
Use the undo igmp-snooping group-limit command to restore the default setting.
By default, there is no limit on the number of multicast groups the port can join.
Example
# Allow Ethernet1/0/1 to join at most 200 multicast groups.
<H3C>system-view
System View: return to User View with Ctrl+Z.
[H3C] interface Ethernet 1/0/1
[H3C-Ethernet1/0/1] igmp-snooping group-limit 200
1.1.8 igmp-snooping group-policy
Syntax
igmp-snooping group-policy acl-number [ vlan vlan-list ]
undo igmp-snooping group-policy [ vlan vlan-list ]
View
System view, Ethernet port view
Parameter
acl-number: Basic ACL number, in the range of 2000 to 2999.
vlan-id: vlan-list: List of VLANs. You can specify multiple VLANs by providing this
argument in the form of vlan-list = { vlan-id [ to vlan-id ] }&<1-10>, where &<1-10>
means that you can provide up to 10 VLANs/VLAN ranges for this argument. VLAN ID
ranges from 1 to 4094.
Description
Use the igmp-snooping group-policy command to configure an IGMP Snooping
filtering ACL.
Use the undo igmp-snooping group-policy command to remove the IGMP Snooping
filtering ACL.
By default, no IGMP Snooping filtering ACL is configured.
You can configure multicast filtering ACLs globally or on the switch ports connected to
user ends so as to use the IGMP Snooping filter function to limit the multicast streams
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-9
that the users can access. With this function, you can treat different VoD users in
different ways by allowing them to access the multicast streams in different multicast
groups.
In practice, when a user orders a multicast program, an IGMP host report message is
generated. When the message arrives at the switch, the switch examines the multicast
filtering ACL configured on the access port to determine if the port can join the
corresponding multicast group or not. If yes, it adds the port to the forward port list of
the multicast group; if not, it drops the IGMP host report message and does not forward
the corresponding data stream to the port. In this way, you can control the multicast
streams that users can access.
An ACL rule defines a multicast address or a multicast address range (for example
224.0.0.1 to 239.255.255.255) and is used to:
z Allow the port(s) to join only the multicast group(s) defined in the rule by a permit
statement.
z Inhibit the port(s) from joining the multicast group(s) defined in the rule by a deny
statement.
Note:
z One port can belong to multiple VLANs. But for each VLAN on the port, you can
configure only one ACL.
z If no ACL rule is configured or the port does not belong to the specified VLAN, the
filter ACL you configured does not take effect on the port.
z Since most devices broadcast unknown multicast packets, this function is often
used together with the unknown multicast packet drop function to prevent multicast
streams from being broadcast to a filtered port as unknown multicast packets.
Example
# Configure ACL 2000 to allow users under Ethernet1/0/1 to access the multicast
streams in groups 225.0.0.0 to 225.255.255.255.
z Configure ACL 2000.
<H3C>system-view
System View: return to User View with Ctrl+Z.
[H3C] acl number 2000
[H3C-acl-basic-2000] rule permit source 225.0.0.0 0.255.255.255
[H3C-acl-basic-2000] quit
z Create VLAN 2 and add Ethernet1/0/1 to VLAN 2.
[H3C] vlan 2
[H3C-vlan2] port Ethernet 1/0/1
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-10
[H3C-vlan2] quit
z Configure ACL 2000 on Ethernet1/0/1 to allow this VLAN 2 port to join only the
IGMP multicast groups defined in the rule of ACL 2000.
[H3C] interface Ethernet 1/0/1
[H3C-Ethernet1/0/1] igmp-snooping group-policy 2000 vlan 2
[H3C-Ethernet1/0/1] quit
# Configure ACL 2001 to allow users under Ethernet1/0/2 to access the multicast
streams in any groups except groups 225.0.0.0 to 225.0.0.255.
z Configure ACL 2001.
[H3C] acl number 2001
[H3C-acl-basic-2001] rule deny source 225.0.0.0 0.0.0.255
[H3C-acl-basic-2001] rule permit source any
[H3C-acl-basic-2001] quit
z Create VLAN 2 and add Ethernet1/0/2 to VLAN 2.
[H3C] vlan 2
[H3C-vlan2] port Ethernet 1/0/2
[H3C-vlan2] quit
z Configure ACL 2001 on Ethernet1/0/2 to allow this VLAN 2 port to join any IGMP
multicast groups except those defined in the deny rule of ACL 2001.
[H3C] interface Ethernet 1/0/2
[H3C-Ethernet1/0/2] igmp-snooping group-policy 2001 vlan 2
1.1.9 igmp-snooping host-aging-time
Syntax
igmp-snooping host-aging-time seconds
undo igmp-snooping host-aging-time
View
System view
Parameter
seconds: Aging time (in seconds) of multicast member ports, in the range of 200 to
1,000.
Description
Use the igmp-snooping host-aging-time command to configure the aging time of
multicast member port.
Use the undo igmp-snooping host-aging-time command to restore the default aging
time.
By default, the aging time of multicast member ports is 260 seconds.
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-11
The aging time of multicast member ports determines the refresh frequency of multicast
group members. In an environment where multicast group members change frequently,
a relatively shorter aging time is required.
Related command: igmp-snooping.
Example
# Set the aging time of multicast member ports to 300 seconds.
<H3C>system-view
System View: return to User View with Ctrl+Z.
[H3C] igmp-snooping host-aging-time 300
1.1.10 igmp-snooping max-response-time
Syntax
igmp-snooping max-response-time seconds
undo igmp-snooping max-response-time
View
System view
Parameter
seconds: Query response timeout time in seconds, in the range of 1 to 25.
Description
Use the igmp-snooping max-response-time command to configure the query
response timeout time.
Use the undo igmp-snooping max-response-time command to restore the default
timeout time.
By default, the query response timeout time is 10 seconds.
Related command: igmp-snooping, igmp-snooping router-aging-time.
Example
# Set the query response timeout time to 15 seconds.
<H3C>system-view
System View: return to User View with Ctrl+Z.
[H3C] igmp-snooping max-response-time 15
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-12
1.1.11 igmp-snooping querier
Syntax
igmp-snooping querier
undo igmp-snooping querier
View
VLAN view
Parameter
None
Description
Use the igmp-snooping querier command to enable the IGMP Snooping querier
feature on the current VLAN of the Layer 2 multicast switch.
Use the undo igmp-snooping querier command to disable the IGMP Snooping
querier feature on the current VLAN of the Layer 2 multicast switch.
By default, the IGMP Snooping querier feature of the Layer 2 multicast switch is
disabled.
Example
# Enable the IGMP Snooping feature on VLAN 3 of the Layer 2 multicast switch.
<H3C> system-view
System view, return to user view with Ctrl+Z.
[H3C] igmp-snooping enable
[H3C] vlan 3
[H3C-vlan3] igmp-snooping enable
[H3C-vlan3] igmp-snooping querier
1.1.12 igmp-snooping query-interval
Syntax
igmp-snooping query-interval seconds
undo igmp-snooping query-interval
View
VLAN view
Parameter
seconds: Interval for the Layer 2 multicast switch to send general query packets.
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-13
Description
Use the igmp-snooping query-interval command to configure the interval for the
Layer 2 multicast switch to send general query packets.
Use the undo igmp-snooping query-interval command to restore the interval to the
default value.
These commands are effective after the IGMP Snooping querier feature is enabled.
Otherwise, the switch will not send general query packets. The configured query
interval must be longer than the maximum response interval of the host,
By default, the Layer 2 multicast switch sends general query packets at the interval of
60 seconds.
Example
# Configure the Layer 2 multicast switch to send general query packets at the interval of
100 seconds on VLAN 3.
<H3C> system-view
System view, return to user view with Ctrl+Z.
[H3C] igmp-snooping enable
[H3C] vlan 3
[H3C-vlan3] igmp-snooping enable
[H3C-vlan3] igmp-snooping querier
[H3C-vlan3] igmp-snooping query-interval 100
1.1.13 igmp-snooping router-aging-time
Syntax
igmp-snooping router-aging-time seconds
undo igmp-snooping router-aging-time
View
System view
Parameter
seconds: Aging time (in seconds) of the router port, in the range of 1 to 1,000.
Description
Use the igmp-snooping router-aging-time command to configure the aging time of
the IGMP Snooping router port.
Use the undo igmp-snooping router-aging-time command to restore the default
aging time.
By default, the aging time of the router port is 105 seconds.
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-14
The router port here refers to the port connecting the Layer 2 switch to the router. The
Layer 2 switch receives IGMP general query messages from the router through this
port. The aging time of the router port should be a value about 2.5 times of the general
query interval.
Related command: igmp-snooping max-response-time, igmp-snooping.
Example
# Set the aging time of the router port to 500 seconds.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C] igmp-snooping router-aging-time 500
1.1.14 reset igmp-snooping statistics
Syntax
reset igmp-snooping statistics
View
User view
Parameter
None
Description
Use the reset igmp-snooping statistics command to clear IGMP Snooping statistics.
Related command: igmp-snooping.
Example
# Clear IGMP Snooping statistics.
<H3C> reset igmp-snooping statistics
1.1.15 service-type multicast
Syntax
service-type multicast
undo service-type multicast
View
VLAN view
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 1 IGMP Snooping Configuration
Commands
1-15
Parameter
None
Description
Use the service-type multicast command to set the current VLAN as a multicast
VLAN.
Use the undo service-type multicast command to cancel the multicast VLAN setting.
By default, no VLAN is a multicast VLAN.
By configuring a multicast VLAN, adding the corresponding switch ports to the multicast
VLAN, and enabling IGMP Snooping, you can allow users in different VLANs to share
the same multicast VLAN. This saves bandwidth since multicast stream is transmitted
only within the multicast VLAN, and also guarantees the security because the multicast
VLAN is completely isolated from the user VLANs.
Note:
z Isolate VLANs cannot be set as multicast VLANs.
z One port belongs to one multicast VLAN only.
z The type of ports connected to the user terminal must be hybrid.
z The multicast member port must be in the same multicast VLAN with the router port.
Otherwise, the port cannot receive multicast packets.
z If a router port is added to a multicast VLAN, the router port must be configured as a
trunk port or tagged hybrid port. Otherwise, all the multicast member ports in this
multicast VLAN cannot receive multicast packets.
z If a multicast member port needs to receive packets forwarded by the router port
that does not belong to any multicast VLAN, the multicast member port must be
removed from the multicast VLAN. Otherwise, the port cannot receive multicast
packets.
Example
# Configure VLAN 2 as a multicast VLAN.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C] vlan 2
[H3C-vlan2] service-type multicast
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 2 Common IP Multicast Configuration
Commands
2-1
Chapter 2 Common IP Multicast Configuration
Commands
2.1 Common IP Multicast Configuration Commands
2.1.1 display mpm forwarding-table
Syntax
display mpm forwarding-table [ group-address ]
View
Any view
Parameter
group-address: IP address of a multicast group, in the range 224.0.0.0 to
239.255.255.255.
Description
Use the display mpm forwarding-table command to display the information about a
multicast forward table/all the multicast forward tables containing port information.
With the group-address argument provided, this command only displays the matched (*,
G) entries. Otherwise, this command displays all the entries.
To display the information about a multicast forward table that does not contain port
information, use the display multicast forwarding-table command.
Example
# Display the information about all the multicast forward tables containing port
information.
<H3C> display mpm forwarding-table
Total 1 entry(entries)
00001. (120.0.0.2, 225.0.0.2)
iif Vlan-interface1200
1 oif(s):
Vlan-interface32
Ethernet1/0/19
Total 1 entry(entries) Listed
Command Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510
Chapter 2 Common IP Multicast Configuration
Commands
2-2
Table 2-1 Description on the fields of the display mpm forwarding-table command
Field Description
Total 1 entry(entries) Total number of the entries
00001 Entry number
(120.0.0.2, 225.0.0.2) Source address-group address pair
iif Vlan-interface1200 The inbound VLAN is VLAN 1200.
1 oif(s): 2 out-vlan(s): Two outbound VLANs exist.
Vlan-interface32
Ethernet1/0/19
The first outbound VLAN is VLAN 32, with
Ethernet1/0/19 as the outbound port
Total 1 entry(entries) Listed
The multicast forward table contains one
(S,G) entry.
2.1.2 display mpm group
Syntax
display mpm group [ vlan vlan-id ]
View
Any view
Parameter
vlan vlan-id: Specifies a VLAN ID. If you do not specify this keyword-argument
combination, all the VLANs are specified.
Description
Use the display mpm group command to display the information about the IP
multicast groups and MAC multicast groups in a VLAN/all the VLANs configured on a
switch.
The output information includes:
z VLAN ID
z Router interface
z IP multicast group address
z Member port of an IP multicast group
z MAC multicast group
z MAC multicast group address
z Member port of a MAC multicast group
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
/