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Re: IPExpert Lab 21 posted 12/27/2007
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Ipexpert labs have a habit of phrasing questions like this to determine if you know your stuff or not.

For add loopbacks as necessary watch out for redistribute connected.

For BGP only R5 and R6 have an ebgp peering to R7 in AS 500. The neighbor local-as 600 no-prepend should satisfy the requirement.

----- Original Message ----- From: "Chan Hong" <chan_hong33@xxxxxxxxx>
To: "certification Cisco" <ccielab@xxxxxxxxxxxxxx>
Sent: Wednesday, December 26, 2007 9:41 AM
Subject: IPExpert Lab 21

Dear all,

I want to ask some questions about IPExpert lab 21. Some of them
are not technical question but the way to understand what is the task request
us to do.

1: In the switching part, it request us to change the spanning tree
age timer to 20. But I don't see any config relate to spanning-tree timer in
the final config. Is that "age timer" means max age in the result of "show
spanning-tree vlan xx"?

sw1#sh spanning-tree vlan 12
 Spanning tree
enabled protocol ieee
 Root ID    Priority    32768
            Cost        19
            Port        24
            Hello Time   2 sec  Max Age 20 sec  Forward
Delay 15 sec
 Bridge ID  Priority    32780  (priority 32768 sys-id-ext 12)
Address     000a.4186.a680
            Hello Time   2 sec  Max Age 20 sec
Forward Delay 15 sec
            Aging Time 300
Interface        Role Sts
Cost      Prio.Nbr Type
---------------- ---- --- --------- --------
Fa0/24           Root FWD 19        128.24

2: What is the meaning of "add loopbacks as deemed necessary"?? I
just put the loopback into routing process. Is that the task request to put
the loopback subnet as external route?

3: in the BGP part, it use "neighbor
x.x.x. local-as" to make R4,5,6 look ask AS600 in R7. But I don't think it
will work for the R2, which under AS610.

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