RE: IPExpert R&S WB8.0 [OSPF Lab 5] - Virutal Links

From: Scott Morris (swm@emanon.com)
Date: Sun Feb 18 2007 - 23:33:53 ART


I think all of the vendors do, but that doesn't stop asking the group
questions! :)

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Tony
Schaffran
Sent: Sunday, February 18, 2007 9:13 PM
To: wilson@wilsonch.gotdns.com; ccielab@groupstudy.com
Subject: RE: IPExpert R&S WB8.0 [OSPF Lab 5] - Virutal Links

I do believe that IPExpert has a forum that you can ask specific IPExpert
workbook lab questions.

Tony Schaffran
Network Analyst
CCIE #11071
CCNP, CCNA, CCDA,
NNCDS, NNCSS, CNE, MCSE
 
www.cconlinelabs.com
Your #1 choice for online Cisco rack rentals.
 

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
wilson@wilsonch.gotdns.com
Sent: Sunday, February 18, 2007 5:34 PM
To: ccielab@groupstudy.com
Subject: IPExpert R&S WB8.0 [OSPF Lab 5] - Virutal Links

Hi Group,

Just trying to understand when virtual links are needed.

In the IPEXPERT scenario lab #5 it looks like the diagram below:

Why is it that R4 doesn't need a virtual-link?
Where as R2-R5, R5-R7, R2-6 needs virtual links but not R4? Thanks!

                              R7
                              /
                           Area 57
                            /
                          R5
                          /
                      Area 25
                        /
Area 0 -R2 (Frame Hub) <------Area 246 (Frame spoke)---R4
                        \
                       Area 246 (Frame Spoke)
                          \
                         R6
                           \
                          Multilink Network
                            \
                           R9



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