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Multicast
Multicast is one of the three network transmission modes, Unicast, Multicast, Broadcast. It is a
transmission mode that supports point-to-multipoint connections between the sender and the
recipient. IGMP protocol is used to establish and maintain the relationship between IP host and the
host directly connected multicast router.
IGMP stands for
Internet Group Management Protocol,
it is a communications protocols used to
manage the membership of Internet Protocol multicast groups. IGMP is used by IP hosts and the
adjacent multicast routers to establish multicast group members. There are three versions for IGMP,
that is IGMPv1, IGMPv2 and IGMPv3.
MLD, short for
Multicast Listener Discovery
protocol, is a component if the Internet Protocol
version 6(IPv6) suite. MLD is used by IPv6 to discover multicast listeners on a directly attached link,
much as IGMP used in IPv4. The protocol is embedded in ICMPv6 instead of using a separate
protocol. MLDv1 is similar to IGMPv2 and MLDv2 is similar to IGMPv3.
IGMP
Multicast Precedence:
It is for multicast QoS. With lower multicast precedence, IGMP packets will
be put into higher-priority queue. Default is set to disable.
Default Version:
Enter the supported IGMP version, 1-3, default is IGMP v3.
Query
Interval:
Enter the periodic query interval time (sec) the multicast router sending the query
message to hosts to understand the group membership information.
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282
Query
Response
Interval:
Enter the response interval time (sec).
Last Member Query Interval:
Enter the interval time (sec) the multicast router query the specified
group after it has received leave message.
Robustness Value:
Enter the router robustness parameter, 2-7, the greater the robustness value,
the more robust the Querier is.
Maximum Multicast Groups:
Enter the Maximum Multicast Groups.
Maximum Multicast Data Sources( for IGMP v3):
Enter the Maximum Multicast Data Sources,1-
24.
Maximum Multicast Group Members:
Enter the Maximum Multicast Group Members.
Fast leave:
Check to determine whether to support fast leave. If this value is enabled, IGMP proxy
removes the membership of a group member immediately without sending an IGMP membership
query on downstream. This is very helpful if user wants fast channel (group change) changing in
cases like IPTV environment.
LAN to LAN (Intra LAN) Multicast:
Check to determine whether to support LAN to LAN (Intra LAN)
Multicast. If user want to have a multicast data source on LAN side and he want to get IGMP
snooping enabled, then this LAN-to-LAN multicast feature should be enabled.
Membership Join Immediate (IPTV):
When a host joins a multicast session, it sends unsolicited
join report to its upstream router immediately. The Startup Query Interval has been set to 1/4 of the
General Query value to enable the faster join at startup.
MLD
Default Version:
Enter the supported MLD version, 1-2, default is MLDv2.
Query
Interval:
Enter the periodic query interval time (sec) the multicast router sending the query
message to hosts to understand the group membership information.
Query
Response
Interval:
Enter the response interval time (sec).
Last Member Query Interval:
Enter the interval time (sec) the multicast router query the specified
group after it has received leave message.
Robustness Value:
Enter the router robustness parameter, default is 2, the greater the robustness
value, the more robust the Querier is.
Maximum Multicast Groups:
Enter the Maximum Multicast Groups.
Maximum Multicast Data Sources( for MLDv2):
Enter the Maximum Multicast Data Sources,1-24.
Maximum Multicast Group Members:
Enter the Maximum Multicast Group Members.
Fast leave:
Check to determine whether to support fast leave. If this value is enabled, MLD proxy
removes the membership of a group member immediately without sending an MLD membership
query on downstream. This is very helpful if user wants fast channel (group change) changing in
cases like IPTV environment.
LAN to LAN (Intra LAN) Multicast:
Check to determine whether to support LAN to LAN (Intra LAN)
Multicast. If user want to have a multicast data source on LAN side and he want to get MLD
snooping enabled, then this LAN-to-LAN multicast feature should be enabled.
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283
Management
SNMP Agent
SNMP, Simple Network Management Protocol, is the most popular one in network. It consists of
SNMP Manager
，
SNMP Agent and MIB. Every network device supporting SNMP will have a SNMP
Agent which is a management software running in the device.
SNMP Manager, the management software running on the server, it uses SNMP protocol to send
GetRequest
、
GetNextRequest, SetRequest message to Agent to view and change the information
of the device.
SNMP Agents, the management software running in the device, accepts the message from the
manager, Reads or Writes the management variable in MIB accordingly and then generates
Response message to send it to the manager. Also, agent will send Trap message to the manager
when agent finds some exceptions.
Trap message, is the message automatically sent by the managed device without request to the
manager about the emergency events.
SNMP Agent:
enable or disable SNMP Agent.
Read Community:
Type the Get Community, which is the authentication for the incoming Get-and
GetNext requests from the management station.
Set Community:
Type the Set Community, which is the authentication for incoming Set requests
from the management station.
System Name:
here it refers to your router.
System Location:
user-defined location.
System Contact:
user-defined contact message.
Trap manager IP:
enter the IP address of the server receiving the trap sent by SNMP agent.
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284
TR- 069 Client
TR-069 (short for Technical Report 069) is a DSL Forum (which was later renamed as Broadband
Forum) technical specification entitled CPE WAN Management Protocol (CWMP). It defines an
application layer protocol for remote management of end-user devices.
As a bidirectional SOAP/HTTP based protocol it can provides the communication between customer
premises equipment (CPE) and Auto Configuration Server (ACS). It includes both a safe
configuration and the control of other CPE management functions within an integrated framework. In
the course of the booming broadband market, the number of different internet access possibilities
grew as well (e.g. modems, routers, gateways, set-top box, VoIP-phones).At the same time the
configuration of this equipment became more complicated –too complicated for end-users. For this
reason, TR-069 was developed. It provides the possibility of auto configuration of the access types.
Using TR-069 the terminals can get in contact with the Auto Configuration Servers (ACS) and
establish the configuration automatically and let ACS configure CPE automatically.
Inform:
select enable to let CPE be authorized to send Inform message to automatically connect to
ACS.
Inform Interval:
Specify the inform interval time (sec) which CPE used to periodically send inform
message to automatically connect to ACS. When the inform interval time arrives, the CPE will send
inform message to automatically connect to ACS.
ACS URL:
Enter the ACS server login name.
ACS User Name:
Specify the ACS User Name for ACS authentication to the connection from CPE.
ACS password:
Enter the ACS server login password.
WAN interface used by TR-069:
select the interface used by TR-069.
Display SOAP message on serial console:
select whether to display SOAP message on serial
console.
Connection Request Authentication:
Check to enable connection request authentication feature.
Connection Request User Name:
Enter the username for ACS server to make connection request.
Connection Request User Password:
Enter the password for ACS server to make connection
request.
Connection Request URL:
Automatically match the URL for ACS server to make connection
request.
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285
GetRPCMethods
：
Supported by both CPE and ACS, display the supported RFC listing methods.
Click
Apply
to apply your settings.

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