
Chapter 22
| Multicast Filtering Commands
IGMP Snooping
– 593 –
The router/querier stops forwarding traffic for that group only if no host replies
to the query within the timeout period. (The timeout for this release is currently
defined by Last Member Query Interval (fixed at one second) * Robustness
Variable (fixed at 2) as defined in RFC 2236.).
◆
If immediate-leave is used, 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.
◆
If the “by-host-ip” option is used, the router/querier will not send out a group-
specific query when an IGMPv2/v3 leave message is received. But will check if
there are other hosts joining the multicast group. Only when all hosts on that
port leave the group will the member port be deleted.
◆
This command is only effective if IGMP snooping is enabled, and IGMPv2 or
IGMPv3 snooping is used.
Example
The following shows how to enable immediate leave.
Console(config)#ip igmp snooping vlan 1 immediate-leave
Console(config)#
ip igmp snooping vlan
last-memb-query-
count
This command configures the number of IGMP proxy group-specific or group-and-
source-specific query messages that are sent out before the system assumes there
are no more local members. Use the
no
form to restore the default.
Syntax
ip igmp snooping vlan
vlan-id
last-memb-query-count
count
no ip igmp snooping vlan
vlan-id
last-memb-query-count
vlan-id
- VLAN ID (Range: 1-4094)
count
- The number of proxy group-specific or group-and-source-specific
query messages to issue before assuming that there are no more group
members. (Range: 1-255)
Default Setting
2
Command Mode
Global Configuration
Command Usage
This command will take effect only if IGMP snooping proxy reporting or IGMP
querier is enabled (
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...