
Configuring IP, ARP, RARP, RIP, and OSPF Services
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To preallocate memory for the routing tables, complete the following tasks:
Using a Default Route for an Unknown Subnet
By default, IP drops packets addressed to an unknown subnet and returns an
ICMP message to the sender. This setting prevents local traffic from accidentally
following the default route to the Internet.
In cases where remote sites follow a default route to a central site, it is appropriate
to enable this parameter. If the router serves as an Internet gateway (with a default
route to the Internet), disable this parameter.
The default route must be present in the routing table.
Site Manager Procedure
You do this System responds
1. In the Configuration Manager window,
choose Protocols.
The Protocols menu opens.
2. Choose IP. The IP menu opens.
3. Choose Global. The Edit IP Global Parameters window
opens.
4. Set the following parameters:
• Estimated Networks
• Estimated Hosts
Click on Help or see the parameter
descriptions beginning on page A-23.
5. Click on OK. You return to the Configuration Manager
window.
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