Install Guide

Table 45. Metric Styles
Metric Style Characteristics Cost Range Supported on IS-IS
Interfaces
narrow Sends and accepts narrow or old TLVs
(Type, Length, Value).
0 to 63
wide Sends and accepts wide or new TLVs. 0 to 16777215
transition Sends both wide (new) and narrow (old)
TLVs.
0 to 63
narrow transition Sends narrow (old) TLVs and accepts
both narrow (old) and wide (new) TLVs.
0 to 63
wide transition Sends wide (new) TLVs and accepts
both narrow (old) and wide (new) TLVs.
0 to 16777215
To change the IS-IS metric style of the IS-IS process, use the following command.
● Set the metric style for the IS-IS process.
ROUTER ISIS mode
metric-style {narrow [transition] | transition | wide [transition]} [level-1 | level-2]
The default is narrow.
The default is Level 1 and Level 2 (level-1–2)
To view which metric types are generated and received, use the show isis protocol command in EXEC Privilege mode.
The IS-IS matrixes settings are in bold.
Example of Viewing IS-IS Metric Types
Configuring the IS-IS Cost
When you change from one IS-IS metric style to another, the IS-IS metric value could be affected. For each interface with IS-IS
enabled, you can assign a cost or metric that is used in the link state calculation.
To change the metric or cost of the interface, use the following commands.
● Assign an IS-IS metric.
INTERFACE mode
isis metric default-metric [level-1 | level-2]
○ default-metric: the range is from 0 to 63 if the metric-style is narrow, narrow-transition, or transition.
The range is from 0 to 16777215 if the metric style is wide or wide transition.
● Assign a metric for an IPv6 link or interface.
INTERFACE mode
isis ipv6 metric default-metric [level-1 | level-2]
○ default-metric: the range is from 0 to 63 for narrow and transition metric styles. The range is from 0 to 16777215
for wide metric styles.
The default is 10.
The default level is level-1.
For more information about this command, refer to Configuring the IS-IS Metric Style.
The following table describes the correct value range for the isis metric command.
Metric Sytle
Correct Value Range
wide 0 to 16777215
narrow 0 to 63
wide transition 0 to 16777215
narrow transition 0 to 63
Intermediate System to Intermediate System 401