
Configuring SNMP, RMON, BOOTP, DHCP, and RARP Services
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Figure 5-1. RARP Server Supplying an IP Address
To use RARP services, you must set up a MAC address-to-IP address mapping
table. This table lists the MAC addresses of clients and the corresponding IP
addresses that the RARP server should assign to those clients. When a client
needs to acquire an IP address, the following interchange takes place:
1. The client broadcasts a RARP request specifying its MAC address.
2. Upon receiving a RARP request, the router refers to its MAC address-to-IP
address mapping table, then sends the client a response packet containing the
corresponding IP address.
3. The client examines the response packet to learn its IP address.
You can configure RARP support on Ethernet and Token Ring interfaces, and on
the Fiber Distributed Data Interface (FDDI).
Enabling RARP Services
This section describes how to enable IP and RARP services simultaneously. If you
want to add RARP to a circuit on which you have already configured IP, refer to
Configuring Routers or Configuring Customer Access and Trunks (BNX
Software), depending on the type of installed software, for information on adding
a protocol.
RARP request: What is my IP address?
RARP response: 192.32.2.23
Router (RARP Server)
Server
SNM0007A
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