
C
HAPTER
18
| Multicast Filtering
Layer 2 IGMP (Snooping and Query)
– 464 –
S
ETTING
IGMP
S
NOOPING
S
TATUS
PER
I
NTERFACE
Use the Multicast > IGMP Snooping > Interface (Configure) page to
configure IGMP snooping attributes for a VLAN interface. To configure
snooping globally, refer to
"Configuring IGMP Snooping and Query
CLI R
EFERENCES
◆
C
OMMAND
U
SAGE
Multicast Router Discovery
There have been many mechanisms used in the past to identify multicast
routers. This has lead to interoperability issues between multicast routers
and snooping switches from different vendors. In response to this problem,
the Multicast Router Discovery (MRD) protocol has been developed for use
by IGMP snooping and multicast routing devices. MRD is used to discover
which interfaces are attached to multicast routers, allowing IGMP-enabled
devices to determine where to send multicast source and group
membership messages. (MRD is specified in draft-ietf-magma-mrdisc-07.)
Multicast source data and group membership reports must be received by
all multicast routers on a segment. Using the group membership protocol
query messages to discover multicast routers is insufficient due to query
suppression. MRD therefore provides a standardized way to identify
multicast routers without relying on any particular multicast routing
protocol.
N
OTE
:
The default values recommended in the MRD draft are implemented
in the switch.
Multicast Router Discovery uses the following three message types to
discover multicast routers:
◆
Multicast Router Advertisement – Advertisements are sent by routers to
advertise that IP multicast forwarding is enabled. These messages are
sent unsolicited periodically on all router interfaces on which multicast
forwarding is enabled. They are sent upon the occurrence of these
events:
■
Upon the expiration of a periodic (randomized) timer.
■
As a part of a router's start up procedure.
■
During the restart of a multicast forwarding interface.
■
On receipt of a Solicitation message.
◆
Multicast Router Solicitation – Devices send Solicitation messages in
order to solicit Advertisement messages from multicast routers. These
messages are used to discover multicast routers on a directly attached
link. Solicitation messages are also sent whenever a multicast
forwarding interface is initialized or re-initialized. Upon receiving a
solicitation on an interface with IP multicast forwarding and MRD
enabled, a router will respond with an Advertisement.
Summary of Contents for ES3510MA-DC
Page 1: ...Management Guide www edge core com 8 Port Layer 2 Fast Ethernet Switch...
Page 2: ......
Page 4: ......
Page 6: ...ABOUT THIS GUIDE 6...
Page 44: ...FIGURES 44...
Page 50: ...TABLES 50...
Page 52: ...SECTION I Getting Started 52...
Page 62: ...CHAPTER 1 Introduction System Defaults 62...
Page 80: ...CHAPTER 2 Initial Switch Configuration Managing System Files 80...
Page 82: ...SECTION II Web Configuration 82...
Page 98: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 98...
Page 126: ...CHAPTER 4 Basic Management Tasks Resetting the System 126...
Page 164: ...CHAPTER 5 Interface Configuration VLAN Trunking 164 Figure 57 Configuring VLAN Trunking...
Page 202: ...CHAPTER 7 Address Table Settings Configuring MAC Address Mirroring 202...
Page 452: ...CHAPTER 17 IP Services Displaying the DNS Cache 452...
Page 498: ...CHAPTER 19 Using the Command Line Interface CLI Command Groups 498...
Page 588: ...CHAPTER 22 SNMP Commands 588...
Page 596: ...CHAPTER 23 Remote Monitoring Commands 596...
Page 650: ...CHAPTER 24 Authentication Commands Management IP Filter 650...
Page 738: ...CHAPTER 27 Interface Commands 738...
Page 760: ...CHAPTER 29 Port Mirroring Commands RSPAN Mirroring Commands 760...
Page 782: ...CHAPTER 32 Address Table Commands 782...
Page 810: ...CHAPTER 33 Spanning Tree Commands 810...
Page 862: ...CHAPTER 35 VLAN Commands Configuring Voice VLANs 862...
Page 876: ...CHAPTER 36 Class of Service Commands Priority Commands Layer 3 and 4 876...
Page 932: ...CHAPTER 38 Multicast Filtering Commands Multicast VLAN Registration 932...
Page 956: ...CHAPTER 39 LLDP Commands 956...
Page 1020: ...CHAPTER 42 Domain Name Service Commands 1020...
Page 1026: ...CHAPTER 43 DHCP Commands DHCP Client 1026...
Page 1058: ...CHAPTER 44 IP Interface Commands IPv6 Interface 1058...
Page 1060: ...SECTION IV Appendices 1060...
Page 1066: ...APPENDIX A Software Specifications Management Information Bases 1066...
Page 1088: ...COMMAND LIST 1088...
Page 1097: ......