Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) - Manual (Page 743)

Multi-Service IronWare Routing Configuration Guide 715
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Configuring IPv6 specific address family route parameters
Configuring IPv6 specific address family route parameters
This section describes how to modify the IS-IS the parameters for the IS-IS IPv6 address family.
Changing the maximum number of load sharing paths
By default, IPv6 IS-IS can calculate and install four equal-cost paths into the IPv6 forwarding table.
You can change the number of paths IPv6 IS-IS can calculate and install in the IPv6 forwarding
table to an amount from
1 – 8. If you change the number of paths to one, the device does not load share route paths
learned from IPv6 IS-IS.
For example, to change the number of paths IPv6 IS-IS can calculate and install in the IPv6
forwarding table to three, enter the following command at the IPv6 IS-IS unicast address family
configuration level:
Brocade(config-isis-router-ipv6u)# maximum-paths 8
Syntax: [no] maximum-paths number
The number parameter specifies the number of paths IPv6 IS-IS can calculate and install in the
IPv6 forwarding table. The number value range is 2 to 32 and the default is 1.
NOTE
The maximum number of paths supported by the BR-MLX-10Gx24-DM module is 16.
To return to the default number of maximum paths, enter the no form of this command.
Enabling advertisement of a default route
By default, the device does not generate or advertise a default route to its neighboring ISs. A
default route is not advertised even if the device’s IPv6 route table contains a default route. You
can enable the device to advertise a default route to all neighboring ISs using one of the following
methods. By default, the feature originates the default route at Level 2 only. However, you can apply
a route map to originate the default route to Level 1 only or at both Level 1 and Level 2.
NOTE
This feature requires the presence of a default route in the IPv6 route table.
To enable the device to advertise a default route that is originated a Level 2, enter the following
command at the IPv6 IS-IS unicast address family configuration level:
Brocade(config-isis-router-ipv6u)# default-information-originate
This command enables the device to advertise a default route into the IPv6 IS-IS area to which the
device is attached.
Syntax: [no] default-information-originate [route-map name]
The route-map name parameter allows you to specify the level on which to advertise the default
route. You can specify one of the following:
• Advertise to Level-1 ISs only.
• Advertise to Level-2 ISs only.
• Advertise to Level-1 and Level-2 ISs.