5-5
z
Although both Layer 2 and Layer 3 multicast protocols can run on the same switch simultaneously,
they cannot run simultaneously in the same VLAN and on the corresponding VLAN interface.
z
Before enabling IGMP Snooping in a VLAN, be sure to enable IGMP Snooping globally in system
view; otherwise the IGMP Snooping setting will not take effect.
z
If IGMP Snooping and VLAN VPN are enabled on a VLAN at the same time, IGMP queries are
likely to fail to pass the VLAN. You can solve this problem by configuring VLAN tags for the IGMP
queries. For details, see
igmp-snooping vlan-mapping
.
Examples
# Enable the IGMP Snooping feature on the switch.
<Sysname>system-view
System View: return to User View with Ctrl+Z.
[Sysname] igmp-snooping enable
Enable IGMP-Snooping ok.
igmp-snooping fast-leave
Syntax
igmp
-
snooping fast
-
leave
[
vlan
vlan-list
]
undo igmp
-
snooping fast
-
leave
[
vlan vlan-list
]
View
System view, Ethernet port view
Parameters
vlan
vlan-list
: Specifies a VLAN list. With the
vlan-list
argument, you can provide one or more individual
VLAN IDs (in the form of
vlan-id
) and/or one or more VLAN ID ranges (in the form of
vlan-id1 to
vlan-id2
,
where
vlan-id2
must be greater than
vlan-id1
). The effective range for a VLAN ID is 1 to 4094 and the
total number of individual VLANs plus VLAN ranges cannot exceed 10.
Description
Use the
igmp-snooping fast-leave
command to enable fast leave processing.
With this function enabled, when the switch receives an IGMP leave message on a port, it directly
removes that port from the forwarding table entry for the specific group.
Use the
undo
igmp-snooping fast-leave
command to disable fast leave processing.
By default, fast leave processing is disabled.
Summary of Contents for 5500-EI PWR
Page 43: ...2 6...
Page 76: ...1 17...
Page 228: ...ii stp transmit limit 1 44 vlan mapping modulo 1 45 vlan vpn tunnel 1 46...
Page 477: ...5 24 Sysname vlan 2 Sysname vlan2 service type multicast...
Page 503: ...2 3 System View return to User View with Ctrl Z Sysname dot1x url http 192 168 19 23...
Page 519: ...iii...
Page 597: ...2 2 security policy server 192 168 0 1 user name format without domain...
Page 648: ...1 9 Examples Clear static ARP entries Sysname reset arp static...
Page 663: ...4 3 Sysname resilient arp interface vlan interface 2...
Page 767: ...1 28 From 12 00 Jan 1 2008 to 12 00 Jun 1 2008...
Page 1111: ...ii xmodem get 3 18...
Page 1314: ...A 44 Z...