
Chapter 22
| Multicast Filtering Commands
IGMP Snooping
– 596 –
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.
Syntax
[
no
]
ip igmp snooping vlan
vlan-id
proxy-address
source-address
vlan-id
- VLAN ID (Range: 1-4094)
source-address
- The source address used for proxied IGMP query and
report, and leave messages. (Any valid IP unicast address)
Default Setting
0.0.0.0
Command Mode
Global Configuration
Command Usage
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.
Rules Used for Proxy Reporting
When IGMP Proxy Reporting is disabled, the switch will use a null IP address for the
source of IGMP query and report messages unless a proxy query address has been
set.
When IGMP Proxy Reporting is enabled, the source address is based on the
following criteria:
◆
If a proxy query address is configured, the switch will use that address as the
source IP address in general and group-specific query messages sent to
downstream hosts, and in report and leave messages sent upstream from the
multicast router port.
◆
If a proxy query address is not configured, the switch will use the VLAN’s IP
address as the IP source address in general and group-specific query messages
sent downstream, and use the source address of the last IGMP message
received from a downstream host in report and leave messages sent upstream
from the multicast router port.
Содержание AS5700-54X
Страница 42: ...Contents 42...
Страница 44: ...Figures 44...
Страница 52: ...Tables 52...
Страница 54: ...Section I Getting Started 54...
Страница 80: ...Chapter 1 Initial Switch Configuration Setting the System Clock 80...
Страница 210: ...Chapter 6 Remote Monitoring Commands 210...
Страница 358: ...Chapter 9 Access Control Lists ACL Information 358...
Страница 418: ...Chapter 12 Port Mirroring Commands RSPAN Mirroring Commands 418...
Страница 436: ...Chapter 15 UniDirectional Link Detection Commands 436...
Страница 442: ...Chapter 16 Address Table Commands 442...
Страница 506: ...Chapter 18 VLAN Commands Configuring VXLAN Tunneling 506...
Страница 526: ...Chapter 19 Class of Service Commands Priority Commands Layer 3 and 4 526...
Страница 544: ...Chapter 20 Quality of Service Commands 544...
Страница 652: ...Chapter 22 Multicast Filtering Commands MLD Proxy Routing 652...
Страница 680: ...Chapter 23 LLDP Commands 680...
Страница 722: ...Chapter 24 CFM Commands Delay Measure Operations 722...
Страница 732: ...Chapter 25 Domain Name Service Commands 732...
Страница 790: ...Chapter 27 IP Interface Commands ND Snooping 790...
Страница 1072: ...Section III Appendices 1072...
Страница 1090: ...Glossary 1090 XModem A protocol used to transfer files between devices Data is grouped in 128 byte blocks and error corrected...
Страница 1102: ...List of CLI Commands 1102...
Страница 1115: ......
Страница 1116: ...AS5700 54X AS6700 32X E032016 ST R02 149100000198A...