Re: ICMP Query!!!

It is true that they help convey information or make sure a path is clear to
send larger packets, but ICMP is not intended to help create state within
the control plane.

Like I said....

IGMP helps to create a path in which Traffic will use.
ICMP uses the data plane that a control plane protocol created.

Does anyone else have anything useful to contribute?

I would always love to hear another explanantion that can be useful and I'm
sure CCIE KID would too, unless the "KID" already gets it.

Narbik?

-- 
Paul Negron
CCIE# 14856 CCSI# 22752
Senior Technical Instructor
www.micronicstraining.com
> From: Carlos G Mendioroz <tron_at_huapi.ba.ar>
> Date: Fri, 12 Nov 2010 17:39:56 -0300
> To: Paul Negron <negron.paul_at_gmail.com>
> Cc: CCIE KID <eliteccie_at_gmail.com>, Cisco certification
> <ccielab_at_groupstudy.com>
> Subject: Re: ICMP Query!!!
> 
> I would call ICMP redirect packets a control thing though.
> And when using ICMP probes (echo request/reply) as part of a IP SLA
> construct, they are a control thing too.
> What about packet too big ?
> 
> In fact, Internet Control Message Protocol sounds a lot to control :)
> 
> -Carlos
> 
> Paul Negron @ 10/11/2010 14:21 -0300 dixit:
>> I apologize,  I meant to state:
>> 
>>> IGMP packets are used to create state on the Router that receives them.
>>> Since it is used to create state, it is a part of the Control Plane process.
>>> It joins so that trees can be built, Although it is PIM that builds them.
>>> 
>>> ICMP is generating traffic and is not associated with building ANYTHING. It
>>> is considered Data Plane traffic. It uses paths that have already been setup
>>> by a Control Plane Protocol, like OSPF or EIGRP or PIM for that matter.
>> 
>> I accidentally stated ICMP twice.
>> 
>> Paul
> 
> -- 
> Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
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