i have a few questions to you !!!

kobem

first question is about acls related to whether choosing inbound or outbound?
(i can't select which one where ?)

second question ,this question will be easy. when you ping 127.0.0.1
(loopback) if it is succesful , are you understand that you are connected
to network if not how?

third question when i said igrp path cost what should i think?
(hop count or bandwidth and delay?)
(i asked this because igrp is distance vector prot. because
of this i must elect hop count but igrp also has as default metric;
bandwidth and delay.)


forth question what are the key elements when i study WAN
because it looks complicated to me?

and fifth one WAN is about routers but why do we say this? it works data link layer?;


please i need your answers , if you have patience about five minutes
reply me.

DirtySouth

Wow...that's alot of questions. I'll answer just a couple of them off the top of my head for now.

#1 - ACLs can be confusing, but imagine yourself being inside the router. Inbound would be anything coming inside the router and Outbound would be anything going out of an interface. It depends on what you're trying to do. Are you trying to prevent traffic from entering the router or from leaving the router?

#2 - 127.0.0.1 is the loopback address for the localhost. In other words, if you ping that address, you are actually pinging yourself. It doesn't necessarily mean that you are connected to a network.

Hope that helps...I'm short on time so can't get to the other questions at the moment.

kobem

please i need more reply to learn

mikej412

kobem wrote:

third question when i said igrp path cost what should i think?
(hop count or bandwidth and delay?)
(i asked this because igrp is distance vector prot. because
of this i must elect hop count but igrp also has as default metric;
bandwidth and delay.)

The metric for IGRP by default works out to the bandwidth and delay (when the default values are used in the equation for the "composite metric").

RIP uses hop count -- and that limited the size of networks.

Now for "path cost" -- In the simplest case -- add up all the metrics for each hop in a possible path to a destination. Lowest value path cost gets placed in the routing table.

Ignore the variance and the fact they talk about EIGRP in this diagram -- where they add up the metrics for the individual hops and still call it a metric -- that's the "path cost" for taking that route.

Once you've figured out path cost -- then you'll find out about what happens when you have multiple equal cost paths (and load balancing) -- and finally the variance command (for IGRP and EIGRP) and unequal cost load balancing.

kobem wrote:

forth question what are the key elements when i study WAN
because it looks complicated to me?

Check out the Exam Blueprint and see if anything there matches what's in your books (if it has a WAN Section)... If you're not using the books recommended in the forum CCNA FAQ, you might want to check them out.

I'd say the "key elements" (or some of the things not to fall asleep while reading) that may be related to WANs are NAT/PAT, WAN technologies (devices, standards, encapsulations, link options, packet switched vs cell switched) and WAN design, PPP, ISDN, DDR, and Frame Relay.

kobem

hey guyz please explain from the first question
and i want details but not by making my mind complex
i want plain sentences simple explanation

please

kobem

anyone answering ?

EdTheLad

kobem wrote:

anyone answering ?

I think your questions have been answered, if you cant understand the answers, you need to buy afew books,read on cisco website and use google for the terms you dont understand.

DirtySouth

kobem wrote:

hey guyz please explain from the first question
and i want details but not by making my mind complex
i want plain sentences simple explanation

please

Which question are you still confused about?

mikej412

DirtySouth wrote:

Which question are you still confused about?

He's over here now.

mp3spy

Damn, I thought I was bad....