3Com CoreBuilder 3500, Implementation Manual, Page: 407 / 592

OSPF Routing Policies 407
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For routes that are accepted into the routing table as defined by the
policy, you can define a new cost metric value for the route, or you
can adjust the existing cost metric using one of these operators:
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+ adds the specified number to the existing cost metric
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- subtracts the specified number from the existing cost metric
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* multiplies the specified number by the existing cost metric
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/ divides the existing cost metric by the specified number
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% modulo divides the existing cost metric by the specified number
and returns the remainder
The routes are then accepted into the routing table with the cost
metric that has been defined by the import policy.
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In case multiple policies match the same route, you can also assign an
administrative weight to define an order of precedence.
Import Policies at a Glance
Table 47 lists the possible import policy configurations.
Table 47 OSPF Import Policies
Route
Address Route Subnet
Mask Policy
Action Metric
Adjustment
Description
0.0.0.0 N/A Accept C Adds all external routes to
routing table and assigns a cost
of C to each
A Subnet mask for
route A Accept C Adds Type 1 and Type 2 Route A
to the routing table with an
associated cost of C
0.0.0.0 N/A Reject N/A Does not add any external routes
to the routing table
A Subnet mask for
route A Reject N/A Does not add Type 1 or Type 2
Route A to the routing table