PROLiNK H5004N Wireless-N - Manual (Page 36)

PROLiNK ® H5004N User Manual www.prolink2u.com
Version 1.00 (Jan’10)
35
Fields in this page:
Field Description
Domain Blocking capability Check this item to enable the Domain Blocking feature.
Domain
The blocked domain. If the URL of Taiwan Yahoo web site is
tw.yahoo.com, the domain can be yahoo.com.
Function buttons in this page:
Apply Changes
Click to disable/enable the Domain Block capability
Add Domain
Add domain into Domain Block table.
Delete Selected Domain
Delete the selected domain from the Domain Block table. You can click the
checkbox at the Select column to select the Blocked domain.
4.4.6 IGMP Proxy Configuration
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.