Sitecom ADSL2+ Modem DC-227

26

6.4 IGMP

Multicasting is useful when the same data needs to be sent to more than one hosts. Using

multicasting as opposed to sending the same data to the individual hosts uses less network

bandwidth. The multicast feature also enables you to receive multicast video stream from

multicast servers.

IP hosts use Internet Group Management Protocol (IGMP) to report their multicast group

memberships to neighboring routers. Similarly, multicast routers use IGMP to discover which

of their hosts belong to multicast groups. This device supports IGMP proxy that handles IGMP

messages. When enabled, this device 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

group on the WAN side.

When a host wishes to join a multicast group, it sends IGMP REPORT message to the device’s

IGMP downstream interface. The proxy sets up a multicast route for the interface and host

requesting the video content. It then forwards the Join to the upstream multicast router. The

multicast IP traffic will then be forwarded to the requesting host. On a leave, the proxy

removes the route and then forwards the leave to the upstream multicast router.

The IGMP Proxy page allows you to enable multicast on WAN and LAN interfaces. The LAN

interface is always served as downstream IGMP proxy, and you can configure one of the

available WAN interfaces as the upstream IGMP proxy.

±

Upstream: The interface that IGMP requests from hosts are sent to the

multicast router.

±

Downstream: The interface data from the multicast router are sent to hosts in

the multicast group database.

Please check

www.sitecom.com

for up to date drivers & utilities, manuals and support

27

Field

Description

IGMP Proxy

Enable/disable IGMP proxy feature

Proxy Interface

The upstream WAN interface is selected here.

Apply Changes

Click to save the setting to the configuration.

Undo

Discard your settings.

Sitecom ADSL2+ Modem DC-227

28

6.5 UPnP

The DSL device supports a control point for Universal Plug and Play (UPnP) version 1.0, and

supports two key features:

NAT Traversal

and

Device Identification

. This feature

requires one active WAN interface. In addition, the host should support this feature. In the

presence of multiple WAN interfaces, select an interface on which the incoming traffic is

present.

With NAT Traversal, when an UPnP command is received to open ports in NAT, the application

translates the request into system commands to open the ports in NAT and the firewall. The

interface to open the ports on is given to UPnP when it starts up and is part of the

configuration of the application.

For Device Identification, the application will send a description of the DSL device as a control

point back to the host making the request.

Field

Description

UPnP Daemon

Enable/disable UPnP feature.

Binded WAN

Interface

Select WAN interface that will use UPnP from the drop-down lists.

Apply Changes

Please check

www.sitecom.com

for up to date drivers & utilities, manuals and support

29

Click to save the setting to the system configuration.

6.6 RIP

RIP is an Internet protocol you can set up to share routing table information with other

routing devices on your LAN, at your ISP’s location, or on remote networks connected to your

network via the ADSL line.

Most small home or office networks do not need to use RIP; they have only one router, such

as the ADSL Modem, and one path to an ISP. In these cases, there is no need to share routes,

because all Internet data from the network is sent to the same ISP gateway.

You may want to configure RIP if any of the following circumstances apply to your network:

-

Your home network setup includes an additional router or RIP-enabled PC

(other than the ADSL Modem). The ADSL Modem and the router will need to

communicate via RIP to share their routing tables.

-

Your network connects via the ADSL line to a remote network, such as a

corporate network. In order for your LAN to learn the routes used within your

corporate network, they should both be configured with RIP.

-

Your ISP requests that you run RIP for communication with devices on their

network.

Sitecom ADSL2+ Modem DC-227

30

Field

Description

RIP

Enable/disable RIP feature.

Field

Description

Interface

The name of the interface on which you want to enable RIP.

Receive Mode

Indicate the RIP version in which information must be passed to the DSL

device in order for it to be accepted into its routing table.

Send Mode

Indicate the RIP version this interface will use when it sends its route

information to other devices.

Add

Add a RIP entry and the new RIP entry will be display in the table

Delete Selected Entry

Delete a selected RIP entry. The RIP entry can be selected on the

Select

column of the

RIP Config Table.

Apply Changes

Set new DHCP server configuration. New parameters will take effect after saving into

flash memory and rebooting the system.