Vctrunk Port Hold-Off Time (Ms); Protocol Enable (Igmp Snooping Protocol) - Huawei OptiX OSN 550 Configuration Manual

7 List of Parameters

7.93 VCTRUNK Port Hold-off Time (ms)

Description
The VCTRUNK-Type Port Hold-off Time (ms) parameter specifies the interval for the
VCTRUNK port to transmit the LPT fault information after it receives the information.
Impact on the System
The greater the hold-off time of the VCTRUNK port, the slower is the transmission of fault
information between networks.
Values
Value Range
0-100000
Configuration Guidelines
Set this parameter according to the actual requirement of the user.

7.94 Protocol Enable (IGMP Snooping Protocol)

Description
IGMP Snooping is a Layer-2 multicast protocol. If the IGMP Snooping is supported, an Ethernet
board can detect the IGMP packets that are transmitted between IP multicast routers or switches
and IP multicast hosts, and then check the detected IGMP packets. After being successfully
checked, these packets are transmitted transparently. An Ethernet board retrieves the registration
information of the multicast group from the checked IGMP packets. Moreover, it configures the
relevant functions to generate route ports and multicast groups. The multicast service packets
are forwarded according to the multicast group information.
This parameter specifies whether to enable the IGMP Snooping protocol within the specified
virtual bridge (VB).
Impact on the System
l
l
7-76
If the IGMP Snooping protocol is enabled, the Ethernet physical port captures and analyzes
the received IGMP packets. Then the Ethernet physical port registers the multicast
information to generate the router port and the multicast group. Finally the Ethernet physical
port transparently transports the packets.
If the IGMP Snooping protocol is disabled, the Ethernet physical port does not analyze the
received IGMP packets. Instead, the Ethernet physical port broadcasts the IGMP packets
as ordinary multicast packets.
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OptiX OSN 550 Multi-Service CPE Optical Transmission
Default Value
0
System
Configuration Guide
Unit
ms
Issue 02 (2011-06-30)