OSPF Commands
©2008 Allied Telesis Inc. All rights reserved.
Software Version 5.2.1
AlliedWare Plus
TM
Operating System Software Reference C613-50003-00 REV E
30.71
summary-address
Use this command to summarize or suppress external routes that have the specified address
range.
Syntax
summary-address A.B.C.D/M [not-advertise][tag <0-4294967295>]
Mode
Router mode
Usage
An address range is a pairing of an address and a mask that is almost the same as IP network
number. For example, if the specified address range is 192.168.0.0/255.255.240.0, it matches:
192.168.1.0/24, 192.168.4.0/22, 192.168.8.128/25 and so on.
Redistributing routes from other protocols into OSPF requires the router to advertise each
route individually in an external LSA. Use the
summary address
command to advertise
one summary route for all redistributed routes covered by a specified network address and
mask. This helps decrease the size of the OSPF link state database.
Examples
The following example uses the
summary-address
command to aggregate external LSAs
that match the network 172.16.0.0/16 and assign a Tag value of 3.
awplus#configure terminal
awplus(config)#router ospf 100
awplus(config-router)#summary-address 172.16.0.0/16 tag 3
Parameter
Description
A.B.C.D/M
The range of addresses given as IPv4 starting address and a mask indicating
the range.
not-advertise
Suppresses external routes.
tag
<0-4294967295> The default tag value is 0.
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