Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) - Manual (Page 296)

268 Multi-Service IronWare Routing Configuration Guide
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Configuring IPv4 address family route parameters
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 Brocade device does not generate or advertise a default route to its neighboring ISs.
A default route is not advertised even if the device’s IPv4 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 IPv4 route table.
To enable the Brocade device to advertise a default route that is originated a Level 2, enter the
following command at the IPv4 IS-IS unicast address family configuration level.
Brocade(config-isis-router-ipv4u)# default-information-originate
This command enables the device to advertise a default route into the IPv4 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.
NOTE
The route map must be configured before you can use the route map as a parameter with the
default-information-originate command.
To use a route map to specify the router to advertise a default route to Level 1, enter commands
such as the following at the Global CONFIG level.
Brocade(config)# route-map default_level1 permit 1
Brocade(config-routemap default_level1)# set level level-1
Brocade(config-routemap default_level1)# exit
Brocade(config)# router isis
Brocade(config-isis-router)# address-family ipv4 unicast
Brocade(config-isis-router-ipv4u)# default-information-originate route-map
default_level1
These commands configure a route map to set the default advertisement level to Level 1 only.
Syntax: [no] route-map map-name permit | deny sequence-number
Syntax: [no] set level level-1 | level-1-2 | level-2
For this use of a route map, use the permit option and do not specify a match statement. Specify a
set statement to set the level to one of the following:
• level-1 – Level 1 only.
• level-1-2 – Level 1 and Level 2.
• level-2 – Level 2 only (default).