Reference Guide
Example
FTOS#show ip ospf 1 topology
Router ID Flags Cost Nexthop Interface Area
3.3.3.3 E/B/-/ 1 20.0.0.3 Gi 13/1 0
1.1.1.1 E/-/-/ 1 10.0.0.1 Gi 7/1 1
FTOS#
summary-address
To advertise one external route, set the OSPF ASBR.
S4820T
Syntax
summary-address ip-address mask [not-advertise] [tag tag-value]
To disable summary address, use the no summary-address ip-address mask 
command.
Parameters
ip-address
Specify the IP address in dotted decimal format of the address to 
summarize.
mask
Specify the mask in dotted decimal format of the address to 
summarize.
not-advertise (OPTIONAL) Enter the keywords not-advertise to suppress that 
match the network prefix/mask pair.
tag 
tag-value
(OPTIONAL) Enter the keyword tag then a value to match on routes 
redistributed through a route map. The range is from 0 to 4294967295.
Defaults Not configured.
Command Modes ROUTER OSPF
Command History
This guide is platform-specific. For command information about other platforms, refer to the 
relevant 
FTOS Command Line Reference Guide
.
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 7.8.1.0 Added support for Multi-Process OSPF.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
pre-Version 
6.1.1.1
Introduced on the E-Series.
Usage 
Information
The area range command summarizes routes for the different areas.
With the not-advertise parameter configured, you can use this command to filter out 
some external routes. For example, if you want to redistribute static routes to OSPF, but you 
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