
Configuring and Customizing IP
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Customizing the IP Routing Table Structure
Structurally, the IP routing table consists of indexes and entries. Each index
contains a pointer to a list of entries. By default, the IP routing table contains 8000
indexes.
A routing table in which all indexes point to the same number of entries is
considered to be in perfect balance. For example, a routing table that contains 100
indexes pointing to 1000 entries is in perfect balance if each index points to 10
entries.
In reality, an IP routing table is allowed to contain indexes that deviate from
perfect balance by a number of entries specified as the deviation-of-nodes value.
By default, the deviation-of-nodes value is 0.
To specify the number of indexes in the IP routing table and to specify a
deviation-of-nodes value, go to the global IP prompt (for example,
box; ip
) and
enter the following commands:
routing-table-indexes
<number>
routing-table-deviation
<deviation>
number
is the number of indexes in the IP routing table.
deviation
is the number of entries by which an index is allowed to deviate from
perfect balance.
For example, the following command sequence configures an IP routing table
with 1000 indexes and a deviation value of 10:
ip#
routing-table-indexes 1000
ip#
routing-table-deviation 10
Caution:
Nortel Networks recommends that you use the default values for the
IP routing table parameters. If you want to specify different values, consult the
Nortel Networks Technical Solutions Center.
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