Allied Telesis AR400 Series Router - Manual (Page 93)

Routing 93
Software Release 2.5.2
C613-02034-00 REV A
4. Configure IGMP.
To enable IGMP on the router, and on the interfaces over which group
membership will be managed, enter the commands:
ENABLE IP IGMP
ENABLE IP IGMP INTERFACE=ETH0
ENABLE IP IGMP INTERFACE=FR0
5. Configure DVMRP.
To enable DVMRP on the router, and on the interfaces over which DVMRP
will perform multicast routing, enter the commands:
ENABLE DVMRP
ADD DVMRP INTERFACE=ETH0 METRIC=1
ADD DVMRP INTERFACE=FR0 DLC=20 METRIC=6
Confirm multicasting.
When you have configured the three routers, the IP hosts connected to these
interfaces can send and receive multicasts packets.
1. Test multicasting.
Send IP multicast data between hosts connected to each of the routers to
test whether IP multicasting is successful.
2. Check the configuration.
To check the configuration on each router, use the commands:
SHOW DVMRP
SHOW IP IGMP
SHOW IP ROUTE MULTICAST
For more information on how to configure IP Multicasting, including PIM-SM
and PIM-DM, see the IP Multicasting chapter in the AR400 Series Router Software
Reference.
Configuring Dynamic Host Configuration
Protocol (DHCP)
The Dynamic Host Configuration Protocol (DHCP) provides a method for
passing configuration information to hosts on a TCP/IP network. DHCP is
based on a client–server model, where the server is the host that allocates
network addresses and initialisation parameters, and the client is the host that
requests these parameters from the server.
DHCP supports three mechanisms for IP address allocation. These
mechanisms are:
■ the automatic allocation mechanism, where DHCP assigns a permanent IP
address to a host.
■ the dynamic allocation mechanism, where DHCP assigns an IP address to a
host for a limited period of time, or until the host explicitly relinquishes the
address.