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iConnect625W ADSL/ADSL2+ Router User Guide
101
8.11
IGMP Proxy
The iConnect625W router supports IGMP Proxy that handles IGMP messages. When
enabled, the iConnect625W acts as a proxy for a LAN host making requests to join and
leave multicast groups, or a multicast router sending multicast packets to multicast
groups on the WAN side. Multicasting is useful when the same data needs to be sent to
more than one device.
Multicasting is a form of limited broadcast. UDP is used to send datagrams to all hosts
that belong to what is called a "host group". A host group is a set of one or more hosts
identified by the same destination IP address. The following statements apply to host
groups:
±
Anyone can join or leave a host group at will;
±
There are no restrictions on a host's location;
±
There are no restrictions on the number of members that may belong to a
host group;
±
Non-group members may send UDP datagrams to the host group.
To enable
IGMP Proxy
, follow the steps below.
Step 1
:
From the
Advanced
tab, click the
IGMP Proxy
link provided. The following
page appears:
Step 2:
Check the
Enable IGMP Proxy
checkbox to enable IGMP proxy.
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Step 3:
Configure the
MyConnection
and
LAN Group 1
interfaces using the
Upstream
,
Downstream
or
Ignore
options as shown below.
Step 4:
Click the
Apply
button to apply the settings.
Step 5:
To save your configuration, please refer to the section under
Save / Restart
Menu
.
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The following table lists the
IGMP Proxy
screen fields and their definitions:
Field
Description
Enable IGMP Proxy
Checking the
Enable IGMP Proxy
checkbox allows you to
enable the iConnect625W router to receive multicast traffic for
your available WAN and LAN connections.
Multicast delivers IP packets to a group of hosts on the
network. IGMP is a session layer (Layer 3) protocol used to
establish membership in a Multicast group.
You can configure one of the following options for each WAN
or LAN interface.
Upstream
The interface that IGMP requests from the
hosts is sent to the multicast router.
Downstream
The interface data from the multicast router
are sent to hosts in the multicast group
database.
Interface
Ignore
No IGMP request nor data multicast are
forwarded when you select this option.
MyConnection
Configure using one of the 3 options for your WAN connection:
Upstream, Downstream
or
Ignore
options.
LAN Group 1
Configure using one of the 3 options for your LAN connection:
Upstream, Downstream
or
Ignore
options.
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104
8.12
Static Routing
If the iConnect625W is connected to more than one network, you may need to set up a
static route between them. A static route is a pre-defined pathway down which network
information must travel to reach a specific host or network.
To enable
Static Routing
, follow the steps below.
Step 1
:
From the
Advanced
tab, click the
Static Routing
link provided. The following
page appears:
Step 2:
Select a connection type from the
Choose a Connection
drop-down list.
Step 3:
Enter the new destination IP for the remote LAN network or host to which you
wish to assign a static route in the
New Destination IP
field.
Step 4:
Enter a subnet mask in the
Mask
field or leave the default value
255.255.255.0
as it is.
Step 5:
Enter the IP address of the new device to connect to the remote network or
host in the
Gateway
field.
Step 6:
Enter a metric in the
Metric
field or leave the default value
0
as it is.
Step 7:
Click the
Apply
button to apply the settings.
Step 8:
To save your configuration, please refer to the section under
Save / Restart
Menu
.
The following table lists the
Static Routing
screen fields and their definitions:
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Field
Description
Choose a
Connection
Choose the connection profile from the drop-down list
provided.
New Destination IP
The New Destination IP is the address of the remote LAN
network or host to which you want to assign a static route.
Mask
Enter the subnet mask for the destination network. Use
255.255.255.255 for a host route. The subnet mask identifies
which portion of an IP address is the network portion, and
which portion of an IP address is the host portion.
Gateway
The Gateway IP address should be the IP address of the
gateway device that allows for contact between the gateway
and the remote network or host. The iConnect625W examines
the destination address in the packet header and passes the
packet along to this gateway if the address is within the
specified range. A packet may go through 30 or more routers
in its travels from one host computer to another.
Metric
This field defines the number of hops between network nodes
that data packets travel. Enter the metric value to be assigned
to this static route. If you are unsure, leave the default value of
0
as it is.
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