Maximum Values In The Routing Table; Change The Is-Is Metric Style In One Level Only - Dell S4820T Configuration Manual

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 38. Metric Value When the Metric Style Changes
Beginning Metric Style
wide
wide
wide
wide
narrow
narrow
narrow
narrow
transition
transition
transition
transition
narrow transition
Intermediate System to Intermediate System
Final Metric Style
narrow
transition
narrow transition
wide transition
wide
transition
narrow transition
wide transition
wide
narrow
narrow
wide transition
wide
Resulting IS-IS Metric Value
default value (10) if the original
value is greater than 63. A
message is sent to the console.
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.
default value (10) if the original
value is greater than 63. A
message is sent to the console.
original value
original value
original value
original value
original value
original value
original value
original value
original value
original value
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