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Quanta Cloud Technology QuantaMesh QNOS5 User Manual

Quanta Cloud Technology QuantaMesh QNOS5
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multicast address. This information is used by snooping switches to avoid delivering multicast packets from
specific sources to networks where there are no interested receivers.
No additional configuration is required to enable IGMPv3/SSM snooping. It is enabled or disabled when
snooping is enabled on a VLAN/interface. The forwarding database built using IGMPv3 reports is based on
the Source IP address, the Multicast Group address, and VLAN. Consider the above configuration example.
When Host A sends IGMPv3 IS_IN a report for Group 225.1.1.1 and Sources 192.168.10.1 and 192.168.20.1.
As snooping is enabled globally on the switch and also on VLAN 100, two entries are added to MFDB so that
multicast traffic with group IP = 225.1.1.1 and if Source Ip=192.168.10.1 or 192.168.20.1 is forwarded to
port 1. All other multicast traffic destined to group 225.1.1.1 is dropped. The following command is used to
display the SSM forwarding database.
(QCT) #show igmp snooping ssm entries
VLAN Source
ID Group Source Ip Filter Mode Interfaces
---- ---------------------- ---------------------- ----------- --------------
100 225.1.1.1 192.168.10.1 include 0/1
100 225.1.1.1 192.168.20.1 include 0/1
3.10. MLD Snooping
3.10.1. MLD Snooping Configuration Example
When enabled MLD Snooping on the switch, it allows switch to examine MLD packet and make forwarding
decisions based on MLD control packets content. MLD snooping querier can be configured on the switch to
support the subnet that does not have any multicast router interfaces. The MLD snooping querier sends out
periodic general MLD queries that the switch forwards through all ports in the VLAN.
About MLD Messages
There are three types of MLDv1 Message:
ï‚·
Multicast Listener Query (Type = decimal 130)
There are two subtypes of Multicast Listener Query messages:
- General Query: used to learn which multicast addresses have listeners on an attached link.
- Multicast-Address-Specific Query: used to learn if a particular multicast address has any listeners
on an attached link.
ï‚·
Multicast Listener Report (Type = decimal 131)
ï‚·
Multicast Listener Done (Type = decimal 132)
There are three types of MLDv2 Queries Message:

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Quanta Cloud Technology QuantaMesh QNOS5 Specifications

General IconGeneral
BrandQuanta Cloud Technology
ModelQuantaMesh QNOS5
CategoryNetwork Router
LanguageEnglish