This command specifies the metric style for the specified router process and IS-IS level.
| area_name | Specifies the router process for which the metric style is to be configured. |
| narrow | Specifies the narrow metric style, which uses the 6-bit default metric. Only narrow metrics are encoded in originated TLVs; only narrow SPF calculations are performed. |
| narrow transition | Specifies the narrow metric style, which uses the 6-bit default metric. Only narrow metrics are encoded in originated TLVs; both narrow and wide SPF calculations are performed. |
| wide | Specifies the wide metric style, which uses the 24-bit metric specified in RFC 3784. Only wide metrics area encoded in originated TLVs; only wide SPF calculations are performed. |
| wide transition | Specifies the wide metric style, which uses the 24-bit metric specified in RFC 3784. Only wide metrics are encoded in originated TLVs; both narrow and wide SPF calculations are performed. |
| transition | Specifies both the narrow and wide metrics. Both narrow and wide metric types are encoded in TLVs; both narrow and wide SPF calculations are performed. |
| level | Specifies the IS-IS level to which the metric style applies. |
Narrow.
Refer to RFC 3787, Section 5.1, for information on how to migrate a network from narrow metric-style to wide metric-style. Note that Section 5.2 is not supported. As a result, each interface's narrow and wide metric values must match while transitioning the metric style. Only when the entire network has transitioned to wide metric style should the interface metrics be configured differently than the configured narrow metric.
The following command configures areax for the narrow metric style:
configure isis area areax metric-style narrow
This command was first available in ExtremeXOS 12.1.
This command is available on platforms with a Premier license as described in the Switch Engine 32.6.3 Feature License Requirements document.