Configuring the Open Shortest Path First Protocol
20-35
20
Redistributing External Routes
You can configure this router to import external routing information from other
routing protocols or static routes into the autonomous system, and to generate
AS-external-LSAs.
Command Usage
• This router supports redistribution for entries learned through RIP, and static
routes.
• When you redistribute external routes into an OSPF autonomous system (AS), the
router automatically becomes an autonomous system boundary router (ASBR).
• However, if the router has been manually configured as an ASBR via the General
Configuration screen, but redistribution is not enabled, the router will only generate
a “default” external route into the AS if it has been configured to “always” advertise
a default route even if an external route does not actually exist (page 20-15).
Command Attributes
•
Redistribute Protocol
– Specifies the external routing protocol type for which
routing information is to be redistributed into the local routing domain.
(Options: RIP, Static; Default: RIP)
•
Redistribute Metric Type
– Indicates the method used to calculate external route
costs. (Options: Type 1, Type 2; Default: Type 1)
Metric type specifies the way to advertise routes to destinations outside the
autonomous system (AS) through External LSAs. Specify Type 1 to add the
internal cost metric to the external route metric. In other words, the cost of the route
from any router within the AS is equal to the cost associated with reaching the
advertising ASBR, plus the cost of the external route. Specify Type 2 to only
advertise the external route metric.
•
Redistribute Metric
– Metric assigned to all external routes for the specified
protocol. (Range: 1-65535: Default: 10)
The metric value specified for redistributed routes supersedes the Default External
Metric specified in the OSPF / General Configuration screen (page 20-15).
OSPF
AS
RIP, or
static routes
Router
ASBR
Summary of Contents for 8926EM
Page 6: ...ii ...
Page 34: ...Getting Started ...
Page 44: ...Introduction 1 10 1 ...
Page 62: ...Initial Configuration 2 18 2 ...
Page 64: ...Switch Management ...
Page 76: ...Configuring the Switch 3 12 3 ...
Page 118: ...Basic Management Tasks 4 42 4 ...
Page 164: ...User Authentication 6 28 6 ...
Page 176: ...Access Control Lists 7 12 7 ...
Page 284: ...Quality of Service 14 8 14 ...
Page 294: ...Multicast Filtering 15 10 15 ...
Page 300: ...Domain Name Service 16 6 16 ...
Page 310: ...Dynamic Host Configuration Protocol 17 10 17 ...
Page 320: ...Configuring Router Redundancy 18 10 18 ...
Page 344: ...IP Routing 19 24 19 ...
Page 356: ...Unicast Routing 20 12 20 Web Click Routing Protocol RIP Statistics Figure 20 5 RIP Statistics ...
Page 386: ...Unicast Routing 20 42 20 ...
Page 388: ...Command Line Interface ...
Page 400: ...Overview of the Command Line Interface 21 12 21 ...
Page 466: ...SNMP Commands 24 16 24 ...
Page 520: ...Access Control List Commands 26 18 26 ...
Page 546: ...Rate Limit Commands 30 2 30 ...
Page 612: ...VLAN Commands 34 24 34 ...
Page 626: ...Class of Service Commands 35 14 35 ...
Page 670: ...DHCP Commands 39 16 39 ...
Page 716: ...IP Interface Commands 41 36 41 ...
Page 768: ...IP Routing Commands 42 52 42 ...
Page 770: ...Appendices ...
Page 791: ......