Reference Guide

Intermediate System to Intermediate System | 521
Changing 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 26-5. Metric Value when 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
1
(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.
1 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
transition narrow original value
transition narrow transition original value
transition wide transition original value
narrow transition wide original value
narrow transition narrow original value
narrow transition wide transition original value
narrow transition transition original value
wide transition wide original value
wide transition narrow default value (10) if the original value is greater than 63.
A message is sent to the console.
wide transition narrow transition default value (10) if the original value is greater than 63.
A message is sent to the console.
wide transition 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.