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DI-1162 Remote Access Router
3.
Talk – the router will send adjacent routers it's own routing
table, but will not incorporate routing information from them.
4.
Both – the router will incorporate routing information from
adjacent routers, and will send adjacent routers it's own
routing table.
IP Multicasting – this feature enables or disables the router's
ability to route IP Multicast packets from one interface to another
(for example, from the LAN ports to the ISDN port). IP
Multicasting is a bandwidth-saving method for transmitting data to
more than one host. IP Multicasting is often used when
sending/receiving audio or video data. When IP Multicasting is
enabled, the router will search its multicast forwarding table and
depending on the result of the search will either forward the packet
or add the group to the table.. If IP Multicasting is disabled, all
multicast packets received by the router will be dropped,
effectively limiting multicasting to the LAN. The router can also
perform DVMRP if this feature is enabled (see Multicast Protocol
below), which allows the DI-1162 to share multicast information
with other routers, enabling IP multicasting over the ISDN port.
Multicast Protocol – if this parameter is set to None, the router
will only use the Internet Group Management Protocol (IGMP), if
IP Multicasting is enabled above. This effectively limits multicast
data to the local network. If set to DVMRP (Distance Vector
Multicast Routing Protocol), the router will also use this protocol
to share its multicast information with other routers (much like
RIP), in effect, enabling multicasting on the WAN port.
IGMP Version – configures the router to use either IGMP version
1 or 2. A major difference between the two is that version 2 allows
the router to communicate multicast information with other routers
(via the WAN port), even if the other router isn't using DVMRP.
DHCP Client (LAN) – this feature allows the LAN port to be
assigned an IP address from a DHCP server other than the one in
the router. This feature should be enabled only for special
configurations (such as the presence of a cable modem on the
38
Configuration and Management
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