From: Navid Daghighi (smart4D@free.fr)
Date: Wed Jan 09 2008 - 08:38:27 ARST
Hi Ben,
this was not a requirement of the lab.
i was just playing around.
wouldn't it be logical to expect all routers to know that a vlan is not
accessible anymore, when the interface getting to this vlan is shut ?
vlan is shut, and 3 routers think it is still accessible and send to
each other any packet destined to this vlan
how could we avoid this in real world ?
thanks,
Navid
Ben Holko a icrit :
> Does it matter? Is e0/0 being shutdown a requirement of the lab?
>
> Remember, they're looking for connectivity, not connectivity under real
> world scenarios or best practice.
>
> Just do what the tasks ask of you, and achieve the goals stated.
>
> If we shutdown S0/0 on various routers I'll bet it will break all sorts
> of things, but if it's not a requirement to keep full connectivity with
> this interface shut, then I must ask why you are shutting it in the
> first place?
>
> Ben
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Navid Daghighi
> Sent: Wednesday, 9 January 2008 7:04 AM
> To: Cisco certification
> Subject: IE R&S lab 3... try this out !
>
> Hi,
>
> if one of you has recently done lab 3 of IE....
>
> try this : AFTER task 4.9, shut down interface e0/0 on R4 (vlan 4)
>
> you will see that a route to vlan 4 loops between R1, R2, R3 and R5,
> never reaching vlan 4 of course
>
> => is this normal ?
> if not, how can we avoid this ?
>
> thanks,
> Navid
>
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