Administrator Guide

Table 34. Metric Value when the Metric Style Changes Multiple Times (continued)
Beginning Metric
Style
Next Metric Style Resulting Metric
Value
Next Metric Style Final Metric Value
wide transition transition truncated value wide transition original value is
recovered
wide transition truncated value narrow default value (10). A
message is sent to the
logging buffer
wide transition transition truncated value narrow transition default value (10). A
message is sent to the
logging buffer
Leaks from One Level to Another
In the following scenarios, each IS-IS level is configured with a different metric style.
Table 35. Metric Value with Different Levels Configured with Different Metric Styles
Level-1 Metric Style Level-2 Metric Style Resulting Metric Value
narrow wide original value
narrow wide transition original value
narrow narrow transition original value
narrow transition original value
wide narrow truncated value
wide narrow transition truncated value
wide wide transition original value
wide transition truncated value
narrow transition wide original value
narrow transition narrow original value
narrow transition wide transition original value
narrow transition transition original value
transition wide original value
transition narrow original value
transition wide transition original value
transition narrow transition original value
wide transition wide original value
wide transition narrow truncated value
wide transition narrow transition truncated value
wide transition transition truncated value
Sample Configurations
The following configurations are examples for enabling IPv6 IS-IS. These examples are not comprehensive directions. They are
intended to give you some guidance with typical configurations.
NOTE: Only one IS-IS process can run on the router, even if both IPv4 and IPv6 routing is being used.
420 Intermediate System to Intermediate System