Chapter 5 NMT Execute Commands

Optimize Command

Note Optimize is not supported for PNNI Networks.

NMT Command Results

Table 5-4lists 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

Set the keep field to one or higher.

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.

 

 

 

Link is not enabled for the routing protocol

Set the PNNI or AR flag to Y in the link table. To

required by the connection, in either AutoRoute

check what protocol the connection requires,

or PNNI.

check the RT_Metrics field in the connection

 

table.

 

 

For AutoRoute Least Cost Routing or PNNI, the

Raise the value in the cost field of the connection

Cost field in the Connection table has too low a

table, or set it to zero to remove the restriction.

maximum value for a route to be found with that

 

cost or lower.

 

 

 

Link is constrained by either the Receive Rate

Raise the values in these fields, or set them to 0 to

field, or the VT_Rate field if the link is a Virtual

remove the restriction.

Trunk.

 

 

 

With AutoRoute, the stat reserve is excluding too

Reduce the stat reserve fields.

much bandwidth

 

 

 

Link is unavailable for this type of connection

For AutoRoute, check the Ad field in the

because of a restricted media (Satellite, for

Connection Table to see if that connection must

example) or the trunk has not been configured for

avoid any link media types. Set this field to blank

a specific type of traffic

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.

 

 

 

Cisco WAN Modeling Tools Guide

5-6

OL-10426-01, Rev. A0

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Cisco Systems OL-10426-01 manual NMT Command Results, Possible Causes for Connections not Routed Over Links
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