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Metric Style
Correct Value Range for the isis metric Command
wide transition
0 to 16777215
narrow transition
0 to 63
transition
0 to 63
Maximum Values in the Routing Table
IS-IS metric styles support different cost ranges for the route. The cost range for the narrow metric style 
is 0 to 1023, while all other metric styles support a range of 0 to 0xFE000000.
Change the IS-IS Metric Style in One Level Only
By default, the IS-IS metric style is narrow. When you change from one IS-IS metric style to another, the 
IS-IS metric value (configured with the isis metric command) could be affected.
In the following scenarios, the IS-type is either Level-1 or Level-2 or Level-1-2 and the metric style 
changes.
Table 30. Metric Value When the Metric Style Changes
Beginning Metric Style
Final Metric Style
Resulting IS-IS Metric Value
wide
narrow
default value (10) if the original 
value is greater than 63. A 
message is sent to the console.
wide
transition
truncated value (the truncated 
value appears in the LSP only). 
The original isis metric value 
is displayed in the show config 
and show running-config 
commands and is used if you 
change back to transition metric 
style.
NOTE: A truncated value is a 
value that is higher than 63, 
but set back to 63 because 
the higher value is not 
supported.
wide
narrow transition
default value (10) if the original 
value is greater than 63. A 
message is sent to the console.
wide
wide transition
original value
narrow
wide
original value
narrow
transition
original value
narrow
narrow transition
original value
narrow
wide transition
original value
transition
wide
original value
Intermediate System to Intermediate System
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