IGMP Snooping Configuration
435
However, a Layer 2 multicast switch does not support IGMP, and therefore does
have an IGMP querier to send general queries by default. By enabling IGMP
Snooping querier on a Layer 2 switch in a VLAN where multicast traffic needs to
be Layer-2 switched only and no multicast routers are present, the Layer 2 switch
will act as a querier to send IGMP general queries, thus allowing multicast
forwarding entries to be established and maintained at the data link layer.
You can also configure the source address and interval of general queries to be
sent from the IGMP Snooping querier.
Configuring Suppression
on IGMP Host Report
Messages
When a Layer 2 switch receives IGMP host report messages from a host in a
multicast group, the switch will forward the packets to the port of a Layer 3 switch
that is connected to it. In this way, a Layer 3 switch will receive the same IGMP
host report messages from multiple hosts in a multicast group when there are
multiple hosts in this multicast group.
When suppression on IGMP host report messages is enabled, in a query interval,
the Layer 2 switch will forward only the first IGMP host report message from a
multicast group to the Layer 3 switch, and drop the other IGMP host report
messages from the same multicast group.
Table 345
Configure IGMP Snooping querier
Operation Command Description
Enter system view
system-view
-
Enable IGMP Snooping
igmp-snooping enable
Required
By default, IGMP Snooping is
disabled.
Enter VLAN view
vlan
vlan-id
-
Enable IGMP Snooping
igmp-snooping enable
Required
By default, IGMP Snooping is
disabled.
Enable IGMP Snooping
querier
igmp-snooping querier
Required
By default, IGMP Snooping
querier is disabled.
Configure the interval
between IGMP general
queries
igmp-snooping
query-interval
seconds
Optional
By default, the interval
between IGMP general
queries is 60 seconds.
Configure the source IP
address of IGMP general
queries
igmp-snooping
general-query
source-ip
{
current-interface
|
ip-address
}
Optional
By default, the source IP
address of IGMP general
queries is 0.0.0.0.
Table 346
Configure suppression on IGMP host report messages
Operation Command Description
Enter system view
system-view
-
Configure suppression on
IGMP host report messages
report-aggregation
Required
By default, suppression on
IGMP host report messages is
disabled.
Summary of Contents for Switch 7754
Page 32: ...32 CHAPTER 1 CLI OVERVIEW ...
Page 70: ...70 CHAPTER 5 LOGGING IN USING MODEM ...
Page 76: ...76 CHAPTER 7 LOGGING IN THROUGH NMS ...
Page 86: ...86 CHAPTER 9 CONFIGURATION FILE MANAGEMENT ...
Page 120: ...120 CHAPTER 13 ISOLATE USER VLAN CONFIGURATION ...
Page 126: ...126 CHAPTER 14 SUPER VLAN ...
Page 136: ...136 CHAPTER 16 IP PERFORMANCE CONFIGURATION ...
Page 152: ...152 CHAPTER 17 IPX CONFIGURATION ...
Page 164: ...164 CHAPTER 19 QINQ CONFIGURATION ...
Page 172: ...172 CHAPTER 21 SHARED VLAN CONFIGURATION ...
Page 182: ...182 CHAPTER 22 PORT BASIC CONFIGURATION ...
Page 198: ...198 CHAPTER 24 PORT ISOLATION CONFIGURATION ...
Page 208: ...208 CHAPTER 25 PORT SECURITY CONFIGURATION ...
Page 224: ...224 CHAPTER 27 DLDP CONFIGURATION ...
Page 232: ...232 CHAPTER 28 MAC ADDRESS TABLE MANAGEMENT ...
Page 240: ...240 CHAPTER 29 CENTRALIZED MAC ADDRESS AUTHENTICATION CONFIGURATION ...
Page 280: ...280 CHAPTER 30 MSTP CONFIGURATION ...
Page 348: ...348 CHAPTER 35 IS IS CONFIGURATION ...
Page 408: ...408 CHAPTER 39 802 1X CONFIGURATION ...
Page 412: ...412 CHAPTER 40 HABP CONFIGURATION ...
Page 422: ...422 CHAPTER 41 MULTICAST OVERVIEW ...
Page 426: ...426 CHAPTER 42 GMRP CONFIGURATION ...
Page 480: ...480 CHAPTER 47 PIM CONFIGURATION ...
Page 506: ...506 CHAPTER 48 MSDP CONFIGURATION ...
Page 552: ...552 CHAPTER 51 TRAFFIC ACCOUNTING CONFIGURATION ...
Page 570: ...570 CHAPTER 53 HA CONFIGURATION ...
Page 582: ...582 CHAPTER 54 ARP CONFIGURATION SwitchA arp protective down recover interval 200 ...
Page 622: ...622 CHAPTER 58 DHCP RELAY AGENT CONFIGURATION ...
Page 684: ...684 CHAPTER 61 QOS CONFIGURATION ...
Page 718: ...718 CHAPTER 63 CLUSTER ...
Page 738: ...738 CHAPTER 67 UDP HELPER CONFIGURATION ...
Page 752: ...752 CHAPTER 69 RMON CONFIGURATION ...
Page 772: ...772 CHAPTER 70 NTP CONFIGURATION ...
Page 796: ...796 CHAPTER 72 FILE SYSTEM MANAGEMENT ...
Page 802: ...802 CHAPTER 73 BIMS CONFIGURATION ...
Page 814: ...814 CHAPTER 74 FTP AND TFTP CONFIGURATION ...
Page 830: ...830 CHAPTER 75 INFORMATION CENTER ...
Page 836: ...836 CHAPTER 76 DNS CONFIGURATION ...
Page 852: ...852 CHAPTER 77 BOOTROM AND HOST SOFTWARE LOADING ...
Page 858: ...858 CHAPTER 78 BASIC SYSTEM CONFIGURATION DEBUGGING ...