
Customizing DVMRP
303527-A Rev. 00
4-27
Configuring a Forwarding Table
To minimize the amount of time that it spends looking up routes, DVMRP creates
and maintains a cache of frequently used routes -- called a forwarding table -- for
each IP interface.
By default, DVMRP preallocates a forwarding table of 32 entries for each circuit.
You can use Site Manager to specify the maximum number of entries (32 to 512)
allowed in the forwarding table associated with this circuit.
When configuring a cache size, you must also keep in mind the TTL value for
entries. If you specify a large cache size, you can specify a larger TTL value. A
smaller cache requires a smaller TTL for cache entries.
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
DVMRP
. The DVMRP menu opens.
4. Choose
Circuit
. The DVMRP Circuit Parameters window
opens.
5. Set the
Forward Cache Size
parameter.
Site Manager:
Forward Cache Size
parameter: page A-8
6. Click on
Apply
, and then click on
Done
. You return to the Configuration Manager
window.
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