Avaya Configuring IP, ARP, RARP, RIP, and OSPF Services Manuel d'utilisateur Page 71

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Configuring and Customizing IP
308627-14.20 Rev 00
3-11
Using Site Manager
To allow all-zero and all-one subnet addresses, complete the following tasks:
Estimating the Size of the Routing Table
IP allows you to estimate how many networks and hosts require an entry in the IP
routing table. The router uses your estimate to preallocate memory for the routing
table. Preallocation of memory increases the speed with which IP software can
learn routes because it removes the overhead caused by dynamic memory
allocation. Preallocation also makes better use of memory and reduces the amount
of memory required.
By default, the router allocates resources to support 500 network and host entries
in the routing table. Avoid making an estimate that is excessively large; doing so
will cause a wasteful overallocation of memory.
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 Zero Subnet Enable parameter.
Click on Help or see the parameter
description on page A-22.
5. Click on OK. You return to the Configuration Manager
window.
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