M
ULTICAST
F
ILTERING
C
OMMANDS
33-6
• IGMP version 1 hosts do not respond to multicast group-specific
queries. If a version 1 host is known by the switch to exist on a LAN
segment, it will not use the IGMP snooping leave-proxy mechanism
on that interface, but will instead process any group leave requests as
specified in the original mechanism for IGMP snooping.
Example
The following shows how to enable leave proxy.
ip igmp snooping immediate-leave
This command immediately deletes a member port of a multicast service if
a leave packet is received at that port and immediate-leave is enabled for
the parent VLAN. Use the
no
form to restore the default.
Syntax
ip igmp snooping immediate-leave
no ip igmp snooping immediate-leave
Default Setting
Disabled
Command Mode
Interface Configuration (VLAN)
Command Usage
• If immediate-leave is
not
used, a multicast router (or querier) will send
a group-specific query message when an IGMPv2/v3 group leave
message is received. The router/querier stops forwarding traffic for
that group only if no host replies to the query within the specified
timeout period. Note that the timeout period is determined by the
ip
igmp snooping query-max-response-time
(see page 33-11).
• If immediate-leave is enabled, the switch assumes that only one host
is connected to the interface. Therefore, immediate leave should only
be enabled on an interface if it is connected to only one
IGMP-enabled device, either a service host or a neighbor running
IGMP snooping.
Console(config)#ip igmp snooping leave-proxy
Console(config)#
Summary of Contents for 7824M/FSW - annexe 1
Page 2: ......
Page 24: ...TABLE OF CONTENTS xxiv ...
Page 28: ...TABLES xxviii ...
Page 32: ...FIGURES xxxii Figure 16 3 DNS Cache 16 7 ...
Page 34: ...GETTING STARTED ...
Page 46: ...SYSTEM DEFAULTS 1 12 ...
Page 62: ...SWITCH MANAGEMENT ...
Page 74: ...CONFIGURING THE SWITCH 3 12 ...
Page 112: ...BASIC MANAGEMENT TASKS 4 38 ...
Page 168: ...USER AUTHENTICATION 6 30 ...
Page 223: ...SHOWING PORT STATISTICS 9 33 Figure 9 12 Port Statistics ...
Page 230: ...ADDRESS TABLE SETTINGS 10 6 ...
Page 304: ...CLASS OF SERVICE 13 16 ...
Page 316: ...QUALITY OF SERVICE 14 12 ...
Page 338: ...MULTICAST FILTERING 15 22 ...
Page 346: ...DOMAIN NAME SERVICE 16 8 ...
Page 348: ...COMMAND LINE INTERFACE IP Interface Commands 35 1 ...
Page 362: ...OVERVIEW OF COMMAND LINE INTERFACE 17 14 ...
Page 494: ...USER AUTHENTICATION COMMANDS 21 48 ...
Page 514: ...CLIENT SECURITY COMMANDS 22 20 ...
Page 540: ...ACCESS CONTROL LIST COMMANDS 23 26 ...
Page 558: ...INTERFACE COMMANDS 24 18 ...
Page 576: ...MIRROR PORT COMMANDS 26 4 ...
Page 582: ...RATE LIMIT COMMANDS 27 6 ...
Page 616: ...SPANNING TREE COMMANDS 29 28 ...
Page 644: ...VLAN COMMANDS 30 28 ...
Page 664: ...CLASS OF SERVICE COMMANDS 31 20 ...
Page 678: ...QUALITY OF SERVICE COMMANDS 32 14 ...
Page 720: ...APPENDICES ...
Page 726: ...SOFTWARE SPECIFICATIONS A 6 ...
Page 730: ...TROUBLESHOOTING B 4 ...
Page 746: ...INDEX Index 6 ...
Page 747: ......