By William R. Parkhurst
As essentially the most predominantly deployed inside Gateway Protocols, Open Shortest direction First (OSPF) calls for a wealth of data at the a part of internetworking pros operating with it each day. regrettably, publicly on hand documentation at the OSPF command set varies from being too skinny on assurance to being too difficult at the required gear had to attempt what the documentation covers. Cisco OSPF Command and Configuration instruction manual is a transparent, concise, and whole resource of documentation for all Cisco IOS(r) software program OSPF instructions. how you use this publication relies on your goals. when you are getting ready for the CCIE written and lab checks, then this booklet can be utilized as a laboratory consultant to benefit the aim and correct use of each OSPF command. while you're a community clothier, then this ebook can be utilized as a prepared reference for any OSPF command.Cisco OSPF Command and Configuration instruction manual offers instance eventualities that reveal the correct use of each OSPF command that may be carried out on a minimal variety of routers. this can provide help to research every one command with out requiring an in depth and dear lab configuration. The situations basically current the aim and use of every command. the various examples lead you into universal non-working occasions for you to make stronger the certainty of the operation of the actual OSPF command. This publication is a part of the Cisco CCIE expert improvement sequence, which deals expert-level guideline on community layout, deployment, and aid methodologies to aid networking pros deal with complicated networks and get ready for CCIE tests.
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Extra info for Cisco® OSPF Command and Configuration Handbook
15 area 0 Verify the OSPF configuration on Routers A, B, and C by displaying the state of each router's OSPF neighbors. 9 Serial1 Verify that OSPF is not using authentication. 1 Supports only single TOS(TOS0) routes SPF schedule delay 5 secs, Hold time between two SPFs 10 secs Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs Number of external LSA 0. Checksum Sum 0x0 Number of DCbitless external LSA 0 Number of DoNotAge external LSA 0 Number of areas in this router is 1. 1 normal 0 stub 0 nssa Area BACKBONE(0) Number of interfaces in this area is 2 Area has no authentication SPF algorithm executed 6 times Area ranges are Number of LSA 3.
The default value is 1. The cost value will be added to the cost of reaching the Area Border Router (ABR) that is advertising the default route. Purpose: External networks will not be advertised into a stub or totally stubby area. External networks are networks that have been redistributed into OSPF. External OSPF routes and inter-area OSPF routes are not advertised into a totally stubby area. When an OSPF area is configured as a stub area, a default route will be generated by the ABR into the stub area in place of the external routes.
252 ip ospf message-digest-key 1 md5 ciscoac ! 252 ip ospf message-digest-key 2 ciscoab clock rate 64000 ! 255 ! 252 ip ospf message-digest-key 2 md5 ciscoab ! 252 ip ospf message-digest-key 3 md5 ciscobc clock rate 64000 ! 255 ! 252 ip ospf message-digest-key 3 ciscobc ! 252 ip ospf message-digest-key 1 md5 ciscoac clock rate 64000 ! 15 area 0 Verification Verify that the OSPF neighbor relationships are still active. 9 Serial1 Verify that MD5 authentication is enabled for Area 0. 1 Supports only single TOS(TOS0) routes SPF schedule delay 5 secs, Hold time between two SPFs 10 secs Minimum LSA interval 5 secs.