Is a TCP packet (layer 4) encapsulated by a IP packet (layer 3) which is
inside a Layer 2 frame?
If so, why the headers of a IP packet and TCP packet look so similar and
redundant?
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Sent: Sunday, August 20, 2000 11:59 AM
Subject: Is a TCP packet encapsulated by a IP packet which is inside a Layer
2 frame?
> Is a TCP packet (layer 4) encapsulated by a IP packet (layer 3) which is
> inside a Laye
>Is a TCP packet (layer 4) encapsulated by a IP packet (layer 3) which is
>inside a Layer 2 frame?
Yes.
>If so, why the headers of a IP packet and TCP packet look so similar and
>redundant?
You'll learn more if I don't spoon-feed you an answer. Which headers
appear to you to be redundant? The
There are some similarities in the IP and TCP headers, but in general, the
headers are very different.
When a frame arrives at a network interface card (NIC), the NIC strips the
data-link-layer header and passes the remaining packet to the appropriate
network-layer protocol. The network layer
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
Priscilla Oppenheimer
Sent: Monday, August 21, 2000 10:35 AM
To: Derek CHUNG; [EMAIL PROTECTED]
Subject:Re: Is a TCP packet encapsulated by a IP packet which is inside a
Layer 2 frame
CL: yes you did, PO, and therefore you are entitled to ask the rest of us
>how we ever got such and such a certification without knowing this ;->
>Still wondering how many CCIE's are unable to duplicate your feat. :->
Many CCIEs can't tell you what's in an IP or TCP header and I find this
shocki
ECTED]> wrote: >
-Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]] On Behalf Of
> Priscilla Oppenheimer
> Sent: Monday, August 21, 2000 10:35 AM
> To: Derek CHUNG; [EMAIL PROTECTED]
> Subject: Re: Is a TCP packet encapsulated by a IP
>
a Oppenheimer"
<[EMAIL PROTECTED]>; "Derek CHUNG" <[EMAIL PROTECTED]>;
<[EMAIL PROTECTED]>
Sent: Tuesday, August 22, 2000 8:32 AM
Subject: RE: Is a TCP packet encapsulated by a IP packet which is inside a
Layer 2 frame?
> I met a CCIE 3 years ago who confirmed th
Derek CHUNG;
[EMAIL PROTECTED]
Subject: RE: Is a TCP packet encapsulated by a IP packet which is inside
a Layer 2 frame?
I met a CCIE 3 years ago who confirmed that he
understood that ICMP was used for Ping request/reply
??? but nothing else.
Scarrry.
PS: I'm not tarring all CCIE&
Feargal [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, August 22, 2000 4:09 PM
To: [EMAIL PROTECTED]
Subject: RE: Is a TCP packet encapsulated by a IP packet which is inside
a Layer 2 frame?
You think thats bad . ?
I worked with a CCIE who couldn't perform a simple traceroute ! Yet he
man
Tuesday, August 22, 2000 5:33 AM
To: Chuck Larrieu; Priscilla Oppenheimer; Derek CHUNG; [EMAIL PROTECTED]
Subject: RE: Is a TCP packet encapsulated by a IP packet which is inside a
Layer 2 frame?
I met a CCIE 3 years ago who confirmed that he
understood that ICMP was used for Ping req
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