From: Daniel C. Young (ccie7999@xxxxxxxxx)
Date: Tue Nov 06 2001 - 03:59:11 GMT-3
Robert,
You will not always be clearly instructed about whether a particular
interface should or should not run a certain running protocol. Read the
questions carefully, and when in doubt ask the proctor. Once you have
decided that an interface should not run the routing protocol, ask yourself
this: if I do not pacify this interface, will a sniffer receive routing
protocol related packets from this interface? If the answer is yes, then you
are not yet done. I assume that if you are this close to the lab exam, you
already know how each protocol treats the passive command.
The best advice I can give you is this: rather than trying to decide on a
strict rule or guideline, think about what makes most sense for the
particular scenario. This is how I managed to pass on my first attempt.
Best of luck to you,
Daniel
----- Original Message -----
From: "McCallum, Robert" <Robert.McCallum@let-it-be-thus.com>
To: "'Ccielab' (E-mail)" <ccielab@groupstudy.com>; "Cisco@Groupstudy. Com
(E-mail)" <cisco@groupstudy.com>
Sent: Wednesday, October 31, 2001 7:51 PM
Subject: To Passive or Not to Passive
> Dear all,
>
> Before I take the leap into the lab (2 weeks to go now), I have a question
which has dogged me for a while now. Scenario below.
>
>
> Router 1 has the following interfaces, Lo0, Eth0/0, S0/0, S0/1 and say
Fast0/1.
>
> Router 2 has the following interfaces Lo0, Lo1, Eth 0/1, S0/0.
>
> Between Router 1 (s0/0) and Router 2 (s0/0) we are running say OSPF. On
router 1 (e0/0 and s0/1) we are running RIP.
> On Router 2 (e0/1 and lo1) we are also running Rip.
>
> Router 1 (lo0, s0/1) and Router 2 (lo0) are running Eigrp.
>
> Now for the questions
>
> 1. On router 1 OSPF process is running Q: should I put lo0,e0/0, fast0/1
and s0/1 as passive interface ??? This worries me quite a bit as the
argument of if you dont put the network command under ospf then ospf will
not run on that interface...BUT I have been told that you should ALWAYS put
every
> "in use" interface into passive if it is not being used under the routing
process.
>
> 2. This is not a question but a sanity check that for EIGRP and RIP then
the "norm" rules of passive interfaces apply.
>
> Thanks for anyones help in clearing this annoying matter up.
>
> Robert McCallum
> Ext 730 3448
> DDI : 01415663448
> Mobile : 07818002241
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