Table of Contents
Advertisement
summary-address
summary-prefix
Configuring OSPF Interfaces
Copyright © 2010, Juniper Networks, Inc.
Use to aggregate external routes at the border of the OSPF routing domain.
Use the summary-address command for IP routes. Use the summary-prefix command
for IPv6 routes.
Use only for AS boundary routers.
The AS boundary router advertises one external route as an aggregate for all
redistributed routes that are covered by the address.
For OSPF, these commands summarize only routes from other routing protocols that
are being redistributed into OSPF.
With these commands, you can reduce the load of advertising many OSPF external
routes by specifying a range that includes some (or all) of these external routes.
Example
host1(config-router)#summary-address 10.1.0.0 255.255.0.0
Use the area range command for route summarization between OSPF areas.
Use the no version to restore the default.
See summary-address
See summary-prefix
You can configure OSPF attributes for either a single OSPF network by using the address
commands, or for all OSPF networks on a particular media interface by using the ip ospf
commands.
The size of the OSPF maximum transmission unit (MTU) is negotiated rather than
configured. OSPF database description exchange uses the interface MTU to signal the
largest OSPF MTU that can be sent over an OSPF interface without fragmentation.
Configuring OSPF attributes for OSPF networks includes setting the following:
Cost
Dead interval
Hello interval
Router priority
Retransmit interval
Transmit delay
Chapter 5: Configuring OSPF
251
Advertisement
Table of Contents
