Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) - Manual (Page 747)

Multi-Service IronWare Routing Configuration Guide 719
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Configuring IPv6 specific address family route parameters
Configuration example
The following global configuration example is for the IPv4 address-family. It can be similarly
configured for IPv6 address-family.
Brocade(config)#router isis
Brocade(config-isis-router)#address-family ipv4 unicast
Brocade(config-isis-router-ipv4u)# default-link-metric 40
Syntax: [no] default-link-metric value [level-1 | level-2]
The value parameter is the default-link-metric value to be set for the given address-family. This is a
required parameter for this command. There is no default value for this parameter. For metric-style
narrow: 1 to 63. For metric-style wide: 1 to 16777215.
The level parameter is an optional parameter used to set the default-metric for only one of the
levels. If this parameter is not given, the default-link-metric will be applied to both level-1 and
level-2.
The [no] version of command will revert the metric value to default, which is 10.
IPv6 metric behavior with multi-topology configuration
The default-link-metric for IPv6 will depend upon the multi-topology configuration.
No multi-topology: The IPv6 default-link-metric will be same as that configured for IPv4
address-family.
Multi-topology: The IPv6 default-link-metric will be equal to the value configured for IPv6
address-family.
Multi-topology transition: The IPv6 default-link-metric will be equal to the value configured for IPv6
address-family.
Metric behavior with change in metric-style
There are two types of metric styles in ISIS, narrow metric and wide metric. The range of the metric
value is different in both of these styles. If there is a change in the metric-style configuration, the
default-link-metric will also change with it. The new value of the default-link-metric will be equal to
the minimum of a) configured value and b) the maximum value supported for the new metric-style.
If the metric style changes from narrow metric to wide metric, there will be no change in the value
of default-link-metric. If the metric style changes from wide metric to narrow metric, and if the value
of default-link-metric is greater than 63, the default-link-metric will now take the value 63, as it is
the maximum supported in the narrow metric.
NOTE
When ISIS is confgured in Multi-topology, and if all the routers are not using multi-topology in the
network, then cofigure multi-topology transition instead of multi-topology.
ISIS Show command
The show isis command and show ipv6 isis command output has been modified to reflect
the default-link-metric configured.
Brocade#sh ipv6 isis