- Cisco WAN Modeling Tools User Guide

5-6
Cisco WAN Modeling Tools Guide
OL-10426-01, Rev. A0
Chapter 5 NMT Execute Commands
Optimize Command
Note Optimize is not supported for PNNI Networks.
NMT Command Results
Table 5-4 lists the possible reasons connections are not being routed over links with the route command.
Table 5-4 Possible Causes for Connections not Routed Over Links
Cause Solution
Link has a zero in the keep field. This indicates
the link is a candidate for the optimize command
to add to the network, but it does not exist in the
network and will not be considered by the route
command.
Set the keep field to one or higher.
Link is not enabled for the routing protocol
required by the connection, in either AutoRoute
or PNNI.
Set the PNNI or AR flag to Y in the link table. To
check what protocol the connection requires,
check the RT_Metrics field in the connection
table.
For AutoRoute Least Cost Routing or PNNI, the
Cost field in the Connection table has too low a
maximum value for a route to be found with that
cost or lower.
Raise the value in the cost field of the connection
table, or set it to zero to remove the restriction.
Link is constrained by either the Receive Rate
field, or the VT_Rate field if the link is a Virtual
Trunk.
Raise the values in these fields, or set them to 0 to
remove the restriction.
With AutoRoute, the stat reserve is excluding too
much bandwidth
Reduce the stat reserve fields.
Link is unavailable for this type of connection
because of a restricted media (Satellite, for
example) or the trunk has not been configured for
a specific type of traffic
For AutoRoute, check the Ad field in the
Connection Table to see if that connection must
avoid any link media types. Set this field to blank
for no restrictions. Check the Traffic field in the
Link Table to see what traffic types can travel on
that link. If it is blank, all types are allowed.