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The full database is exchanged between neighboring routers as soon as a
new router is discovered. Afterwards, any changes that occur in the routing
tables are synchronized with neighboring routers through a process called
reliable flooding. You can show information about different LSAs stored
in this router’s database, which may include any of the following types:
•
Router (Type 1) – All routers in an OSPF area originate Router LSAs
that describe the state and cost of its active interfaces and neighbors.
•
Network (Type 2) – The designated router for each area originates a
Network LSA that describes all the routers that are attached to this
network segment.
•
Summary (Type 3) – Area border routers can generate Summary LSAs
that give the cost to a subnetwork located outside the area.
•
AS Summary (Type 4) – Area border routers can generate AS Summary
LSAs that give the cost to an autonomous system boundary router
(ASBR).
•
AS External (Type 5) – An ASBR can generate an AS External LSA for
each known network destination outside the AS.
•
NSSA External (Type 7) – An ASBR within an NSSA generates an
NSSA external link state advertisement for each known network
destination outside the AS.
Command Attributes
•
Area ID
– Area defined for which you want to view LSA information.
(This item must be entered in the form of an IP address.)
•
Link ID
– The network portion described by an LSA. The Link ID
should be:
-
An IP network number for Type 3 Summary and Type 5 AS
External LSAs. (When an Type 5 AS External LSA is describing a
default route, its Link ID is set to the default destination 0.0.0.0.)
Summary of Contents for 8612XL3
Page 2: ......
Page 26: ...CONTENTS xxvi ...
Page 40: ...INTRODUCTION 1 14 ...
Page 69: ...BASIC CONFIGURATION 3 15 ...
Page 175: ...PORT CONFIGURATION 3 121 ...
Page 337: ...IP ROUTING 3 283 Web Click Routing Protocol RIP Statistics ...
Page 379: ...MULTICAST ROUTING 3 325 Command Usage ...
Page 396: ...CONFIGURING THE SWITCH 3 342 ...
Page 582: ...COMMAND LINE INTERFACE 4 186 ...
Page 806: ... 224 Command Mode Privileged Exec Example Console clear vrrp 1 interface 1 counters Console ...
Page 826: ... 6 ...
Page 828: ...TROUBLESHOOTING B 2 ...
Page 838: ...GLOSSARY Glossary 10 ...
Page 845: ......