Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) - Manual (Page 751)

Multi-Service IronWare Routing Configuration Guide 723
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Configuring IS-IS properties on an interface
Configuring IS-IS properties on an interface
The parameter settings for configuring IS-IS properties on a device apply to both IS-IS IPv4 and IS-IS
IPv6 except for
“Changing the metric added to advertised routes” as described below. For details
on how to perform all other IS-IS properties on an Interface, refer to Chapter 3, “IS-IS (IPv4)”
Changing the metric added to advertised routes
When the device originates an IS-IS route or calculates a route, the device adds a metric (cost) to
the route. Each IS-IS interface has a separate metric value. The default is 10.
The device applies the interface-level metric to routes originated on the interface and also when
calculating routes. The device does not apply the metric to link-state information that the device
receives from one IS and floods to other ISs.
The default interface metric is 10. You can change the metric on an individual interface to a value
in one of the following ranges:
• 1 – 63 for the narrow metric style (the default metric style)
• 1 – 16777215 for the wide metric style
NOTE
If the metric value you want to use is higher than 63 but you have not changed the metric style to
wide, change the metric style first, then set the metric. The IS-IS neighbors that will receive the
advertisements also must be enabled to receive wide metrics.
To change the IS-IS metric on an interface, use the following CLI method.
Brocade(config-isis-router)# interface ethernet 2/8
Brocade(config-if-e1000-2/8)# isis metric 44
Syntax: [no] isis metric num
The num parameter specifies the metric. The range of values you can specify depends on the
metric style. You can specify 1 – 63 for the narrow metric style or 1 – 16777215 for the wide metric
style. The default in either case is 10.
When IPv6 IS-IS is enabled in a single topology, you must set the metric-style to be wide if you want
to use an interface metric greater than 63.
IPv6 IS-IS Non-Stop Routing
Overview
NOTE
IPv6 IS-IS NSR is not supported on the Brocade NetIron CES and Brocade NetIron CER platforms.