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C
HAPTER
38
| Multicast Filtering Commands
IGMP Snooping
– 975 –
messages is not required and may be disabled using the
no ip igmp
snooping vlan mrd
command.
This command may also be used to disable multicast router solicitation
messages when the upstream router does not support MRD, to reduce
the loading on a busy upstream router, or when IGMP snooping is
disabled in a VLAN.
E
XAMPLE
This example disables sending of multicast router solicitation messages on
VLAN 1.
Console(config)#no ip igmp snooping vlan 1 mrd
Console(config)#
ip igmp snooping
vlan proxy-address
This command configures a static source address for locally generated
query and report messages used by IGMP proxy reporting. Use the
no
form
to restore the default source address.
S
YNTAX
[
no
]
ip igmp snooping vlan
vlan-id
proxy-address
source-address
vlan-id
- VLAN ID (Range: 1-4093)
source-address
- The source address used for proxied IGMP query
and report, and leave messages. (Any valid IP unicast address)
D
EFAULT
S
ETTING
0.0.0.0
C
OMMAND
M
ODE
Global Configuration
C
OMMAND
U
SAGE
IGMP Snooping uses a null IP address of 0.0.0.0 for the source of IGMP
query messages which are proxied to downstream hosts to indicate that it
is not the elected querier, but is only proxying these messages as defined
in RFC 4541. The switch also uses a null address in IGMP reports sent to
upstream ports.
Many hosts do not implement RFC 4541, and therefore do not understand
query messages with the source address of 0.0.0.0. These hosts will
therefore not reply to the queries, causing the multicast router to stop
sending traffic to them.
To resolve this problem, the source address in proxied IGMP query and
report messages can be replaced with any valid unicast address (other
than the router's own address) using this command.
Содержание DG-FS4526E
Страница 4: ...ABOUT THIS GUIDE 4...
Страница 34: ...CONTENTS 34...
Страница 50: ...TABLES 50...
Страница 52: ...SECTION I Getting Started 52...
Страница 62: ...CHAPTER 1 Introduction System Defaults 62...
Страница 80: ...CHAPTER 2 Initial Switch Configuration Managing System Files 80...
Страница 82: ...SECTION II Web Configuration 82...
Страница 100: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 100...
Страница 128: ...CHAPTER 4 Basic Management Tasks Resetting the System 128...
Страница 166: ...CHAPTER 5 Interface Configuration VLAN Trunking 166...
Страница 198: ...CHAPTER 6 VLAN Configuration Configuring VLAN Mirroring 198...
Страница 516: ...CHAPTER 17 IP Services Displaying the DNS Cache 516...
Страница 562: ...CHAPTER 19 Using the Command Line Interface CLI Command Groups 562...
Страница 652: ...CHAPTER 22 SNMP Commands 652...
Страница 660: ...CHAPTER 23 Remote Monitoring Commands 660...
Страница 714: ...CHAPTER 24 Authentication Commands Management IP Filter 714...
Страница 802: ...CHAPTER 27 Interface Commands 802...
Страница 824: ...CHAPTER 29 Port Mirroring Commands RSPAN Mirroring Commands 824...
Страница 846: ...CHAPTER 32 Address Table Commands 846...
Страница 874: ...CHAPTER 33 Spanning Tree Commands 874...
Страница 886: ...CHAPTER 34 ERPS Commands 886...
Страница 928: ...CHAPTER 35 VLAN Commands Configuring Voice VLANs 928...
Страница 942: ...CHAPTER 36 Class of Service Commands Priority Commands Layer 3 and 4 942...
Страница 998: ...CHAPTER 38 Multicast Filtering Commands Multicast VLAN Registration 998...
Страница 1022: ...CHAPTER 39 LLDP Commands 1022...
Страница 1064: ...CHAPTER 40 CFM Commands 1064...
Страница 1084: ...CHAPTER 42 Domain Name Service Commands 1084...
Страница 1090: ...CHAPTER 43 DHCP Commands DHCP Client 1090...
Страница 1122: ...CHAPTER 44 IP Interface Commands IPv6 Interface 1122...
Страница 1124: ...SECTION IV Appendices 1124...
Страница 1129: ...APPENDIX A Software Specifications Management Information Bases 1129 Trap RFC 1215 UDP MIB RFC 2013...
Страница 1130: ...APPENDIX A Software Specifications Management Information Bases 1130...
Страница 1152: ...COMMAND LIST 1152...
Страница 1161: ......
Страница 1162: ...DG FS4526E 042012 HW R01...