Brocade Virtual ADX Switch and Router Guide (Supporting ADX v03.1.00) - Manual (Page 145)

Brocade Virtual ADX Switch and Router Guide 131
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Configuring OSPF
6
Syntax: summary-address ip-addr ip-mask
The ip-addr parameter specifies the network address.
The ip-mask parameter specifies the network mask.
To display the configured summary addresses, enter the following command at any level of the CLI.
Virtual ADX(config-ospf-router)# show ip ospf config
OSPF Redistribution Address Ranges currently defined:
Range-Address Subnetmask
10.0.0.0 255.0.0.0
10.0.1.0 255.255.255.0
10.0.2.0 255.255.255.0
Syntax: show ip ospf config
Configure default route origination
When the Layer 3 Switch is an OSPF Autonomous System Boundary Router (ASBR), you can
configure it to automatically generate a default external route into an OSPF routing domain. This
feature is called “default route origination” or “default information origination”.
By default, Brocade Layer 3 Switches do not advertise the default route into the OSPF domain. If
you want the Layer 3 Switch to advertise the OSPF default route, you must explicitly enable default
route origination.
When you enable OSPF default route origination, the Layer 3 Switch advertises a type 5 default
route that is flooded throughout the AS (except stub areas and NSSAs). In addition, internal NSSA
ASBRs advertise their default routes as translatable type 7 default routes.
The Layer 3 Switch advertises the default route into OSPF even if OSPF route redistribution is not
enabled.
NOTE
Brocade Layer 3 Switches never advertise the OSPF default route, regardless of other configuration
parameters, unless you explicitly enable default route origination using the following method.
If the Layer 3 Switch is an ASBR, you can use the “always” option when you enable the default route
origination. The always option causes the ASBR to create and advertise a default route if it does not
already have one configured.
If default route origination is enabled and you disable it, the default route originated by the Layer 3
Switch is flushed. Default routes generated by other OSPF routers are not affected. If you re-enable
the feature, the feature takes effect immediately and thus does not require you to reload the
software.
NOTE
The ABR (Layer 3 Switch) will not inject the default route into an NSSA by default and the command
described in this section will not cause the Layer 3 Switch to inject the default route into the NSSA.
To inject the default route into an NSSA, use the area num | ip-addr nssa
default-information-originate command. Refer to
“Assign a Not-So-Stubby Area (NSSA)” on
page 111.
To enable default route origination, enter the following command.
Virtual ADX(config-ospf-router)# default-information-originate