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Hello experts,

can someone please explain what just happened in this task. I did not see where they were coming from or going to with the Summary Net Link States (Area 34) for that matter!! And the SG does not explain much.

Thanks for your input.

...looks like a s.r.t to me...stupid router trick...that i lost 20 minutes on before skipping....

Wouldn't it be nice if the Solution Guide gave detail explainations. They used to do it in the earlier labs but not in the latter. It would have saved us a lot more processing power of our brains. I hope they will do it in the Version 5 workbooks.

I missed this one too and skipped it.  The SG guide doesn't explain why this works, but now I get it -- I think.

The "Net Link State (Area 34)" output of "show ip ospf database" is showing the designated routers in Area 34 (this is the type-2 LSA).  By making the ospf network type point-to-point, we are eliminating the use of a designated router on the segment.  Since we no longer have a designated router in Area 34, we no longer have the type 2 LSA in the database. 

I was thinking the same thing you were, but didn't have any success.  Not sure why.

              Summary Net Link States (Area 34)

Link ID         ADV Router      Age         Seq#       Checksum
129.1.45.0      150.1.9.9       55          0x80000001 0x0010D9
129.1.45.0      150.1.10.10     45          0x80000001 0x0003E4
129.1.46.0      150.1.9.9       56          0x80000001 0x0039A7
129.1.46.0      150.1.10.10     5           0x80000001 0x002CB2
129.1.54.0      150.1.9.9       56          0x80000001 0x005940
129.1.54.0      150.1.10.10     5           0x80000001 0x004C4B
129.1.58.0      150.1.9.9       56          0x80000001 0x00B420
129.1.58.0      150.1.10.10     5           0x80000001 0x00A72B
150.1.4.4       150.1.9.9       56          0x80000001 0x00CE23
150.1.4.4       150.1.10.10     5           0x80000001 0x00C12E
150.1.5.5       150.1.9.9       56          0x80000001 0x00B936
150.1.5.5       150.1.10.10     5           0x80000001 0x00AC41
150.1.6.6       150.1.9.9       56          0x80000001 0x00AE3E
150.1.6.6       150.1.10.10     5           0x80000001 0x00A149
150.1.8.8       150.1.9.9       56          0x80000001 0x008464
150.1.8.8       150.1.10.10     5           0x80000001 0x00776F
150.1.9.9       150.1.9.9       57          0x80000001 0x005B8D
150.1.9.9       150.1.10.10     6           0x80000001 0x00588D

Rack1SW4#
Rack1SW4#sho ip osp int br
Interface    PID   Area            IP Address/Mask    Cost  State Nbrs F/C
Vl45         1     0               129.1.45.2/29      1     BDR   3/3
Fa0/19       1     34              129.1.34.10/24     1     P2P   1/1

Any ideas?

I wish every candidate must remember OSPFv2 and OSPFv3 LSA types and conditions when and where they come into play.

---

From: iewb-rs-vol2-v4-lab12@ieoc.com [mailto:iewb-rs-vol2-v4-lab12@ieoc.com] On Behalf Of NTllect
Sent: Thursday, October 16, 2008 7:33 AM
To: Tammy Burley (taburley)
Subject: Re: [IEWB-RS-VOL2-V4-LAB12] Task 4.2 OSPF

I wish every candidate must remember OSPFv2 and OSPFv3 LSA types and conditions when and where they come into play.

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