From: Gary Duncanson (gary.duncanson@googlemail.com)
Date: Thu Dec 27 2007 - 07:48:31 ART
Hi Howard,
When questions like the spanning-tree one shows up a deficiency in your theory
knowledge make a note of the topic and read up on it in books like Odom or
Doyle.
You will find that this IPexpert lab (Lab 'C' or Lab21) is heavy on
redistribution with redistribute connected used a lot on different routing
protocols. You are advised to add loobacks as deemed necessary. Do this to
meet full reachability requirements. Best advice is to print out the pdf
diagram that comes with this lab and draw all the IGPs. Carefully examine the
requirements and if you are still stuck, donate all the redistribution points
on your drawing. Check routing tables on all yoru routers. Run debug ip
routing.
Note that with loopbacks redistribute connected is one way to overcome a known
problem with loopbacks and IGPS.
Merry Christmas!
----- Original Message -----
From: Chan Hong
To: Gary Duncanson
Cc: ccielab@groupstudy.com ; swm@emanon.com
Sent: Thursday, December 27, 2007 10:05 AM
Subject: Re!G IPExpert Lab 21
Dear gary,
Thanks! obviously, I'm not very clear about spanning-tree parameters.
I just doubt that am I correct to put the loopback into routing process, and
just put it into area 0 in ospf domain.
Regards,
Howard
----- 6l%s-l%s ----
1H%s$H!R Gary Duncanson <gary.duncanson@googlemail.com>
&,%s$H Chan Hong <chan_hong33@yahoo.com>
0F%;(CC) ccielab@groupstudy.com; swm@emanon.com
6G0e$i4A!R 2007 &~ 12$k 27 $i ,P4A%| $U$H 5:31:03
%DCD!G Re: IPExpert Lab 21
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
10.10.10.7 local-as 600 no-prepend should satisfy the requirement.
Gary
----- Original Message -----
From: "Chan Hong" <chan_hong33@yahoo.com>
To: "certification Cisco" <ccielab@groupstudy.com>
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
> VLAN0012
> Spanning tree
> enabled protocol ieee
> Root ID Priority 32768
> Address
> 0001.426d.2141
> Cost 19
> Port 24
> (FastEthernet0/24)
> 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
> P2p
> sw1#
>
> 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.
>
> Regards,
> Howard
> _______________________________________
> YM - i"g7h(
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> http://messenger.yahoo.com.hk
>
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