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User’s Manual of IGSW-2840
211
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IGMP Version
Sets the protocol version for compatibility with other devices on the network.
Range: 1-3;
Default:
2
1.
All systems on the subnet must support the same version.
2.
Some attributes are only enabled for IGMPv2 and/or v3, including Act as IGMP
Querier, IGMP Report Delay and IGMP Query Timeout.
4.9.1.2 IGMP Immediate Leave
The Industrial Managed Switch can be configured to immediately delete a member port of a multicast service if a leave packet is
received at that port and the immediate-leave function is enabled for the parent VLAN. This allows the Managed witch to remove
a port from the multicast forwarding table without first having to send an IGMP group-specific query to that interface.
Command Usage
•
If immediate leave is not used, a multicast router (or querier) will send a group-specific query message when an IGMPv2/v3
group leave message is received. The router/querier stops forwarding traffic for that group only if no host replies to the query
within the specified timeout period. Note that the timeout period is determined by the IGMP Query Report Delay (see
“Configuring IGMP Snooping and Query Parameters”).
•
If immediate leave is enabled, the Managed witch 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.
•
Immediate leave is only effective if IGMP snooping is enabled, and IGMPv2 or IGMPv3 snooping is used.
•
Immediate leave does not apply to a port if the Managed witch has learned that a multicast router is attached to it.
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Immediate leave can improve bandwidth usage for a network which frequently experiences many IGMP host add and leave
requests.
Figure 4-9-2
IGMP Immediate Leave screenshot
Содержание IGSW-2840
Страница 23: ...User s Manual of IGSW 2840 23 A 2 10 100Mbps 10 100Base TX 665 APPENDEX B GLOSSARY 667 ...
Страница 110: ...User s Manual of IGSW 2840 110 Figure 4 3 14 SNMPv3 View Edit screenshot ...
Страница 119: ...User s Manual of IGSW 2840 119 Figure 4 4 7 Mirror Port Configuration screenshot ...
Страница 205: ...User s Manual of IGSW 2840 205 Multicast Service Multicast flooding ...
Страница 216: ...User s Manual of IGSW 2840 216 Figure 4 9 7 IGMP Member Port Table screenshot ...
Страница 280: ...User s Manual of IGSW 2840 280 Figure 4 11 19 SSH Host Key Settings screenshot ...
Страница 315: ...User s Manual of IGSW 2840 315 Figure 4 11 44 MAC ACL Settings screenshot ...
Страница 317: ...User s Manual of IGSW 2840 317 Figure 4 11 46 ACL Port Binding Settings screenshot ...
Страница 431: ...User s Manual of IGSW 2840 431 tacacs 1 Console ...