Brocade Network OS Command Reference v4.1.0 - Manual (Page 1303)

Network OS Command Reference 1265
53-1003115-01
summary-address
2
summary-address
Configures route summarization for redistributed routes for an Autonomous System Boundary
Router (ASBR).
Synopsis summary-address A.B.C.D E.F.G.H
no summary-address
Operands A.B.C.D E.F.G.H IP address and mask for the summary route representing all the
redistributed routes in dotted decimal format.
Defaults Summary addresses are not configured.
Command Modes OSPF VRF router configuration mode
Description Use this command to configure an ASBR to advertise one external route as an aggregate for all
redistributed routes that are covered by a specified address range. When you configure an
address range, the range takes effect immediately. All the imported routes are summarized
according to the configured address range. Imported routes that have already been advertised
and that fall within the range are flushed out of the AS and a single route corresponding to the
range is advertised.
If a route that falls within a configured address range is imported by the device, no action is taken
if the device has already advertised the aggregate route; otherwise the device advertises the
aggregate route. If an imported route that falls within a configured address range is removed by
the device, no action is taken if there are other imported routes that fall within the same address
range; otherwise the aggregate route is flushed.
You can configure up to 32 address ranges. The device sets the forwarding address of the
aggregate route to 0 and sets the tag to 0. If you delete an address range, the advertised
aggregate route is flushed and all imported routes that fall within the range are advertised
individually. If an external link-state-database-overflow condition occurs, all aggregate routes and
other external routes are flushed out of the AS. When the device exits the external LSDB overflow
condition, all the imported routes are summarized according to the configured address ranges.
Usage Guidelines This parameter affects only imported, type 5 external routes.
Enter no summary-address to disable route summarization.
Examples To configure a summary address of 10.1.0.0 with a mask of 255.255.0.0:
switch# configure
switch(config)# rbridge-id 5
switch(config-rbridge-id-5)#router ospf
switch(config-router-ospf-vrf-default-vrf)# summary-address 10.1.0.0 255.255.0.0
NOTE
The command in this example configures summary address 10.1.0.0, which includes addresses
10.1.1.0, 10.1.2.0, 10.1.3.0, and so on. For all of these networks, only the address 10.1.0.0 is
advertised in external LSAs.
See Also None