Priscilla,
In the attachment (Cisco CCNA Exam Guide #640-507 Certification Guide: ISBN
0-7357-0971-8), page 167 - 168, the authors seem to indicate that CBPDUs are
sent from blocked ports! The ability for CBPDUs to be sent out of blocked
port seems to a determinant factor for the Spanning Tree
-Alex Guanel [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 27, 2002 1:46 PM
To: [EMAIL PROTECTED]
Subject: Re: Spanning tree Protocol Questions [7:36559]
Priscilla,
In the attachment (Cisco CCNA Exam Guide #640-507
Certification Guide: ISBN
0-7357-0971-8), page 167 - 168
So a blocked port can receive AND send BPDUs Correct?
Pierre-Alex
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Daniel Cotts
Sent: Wednesday, February 27, 2002 2:54 PM
To: [EMAIL PROTECTED]
Subject: RE: Spanning tree Protocol Questions [7:36559
At 02:45 PM 2/27/02, Pierre-Alex Guanel wrote:
Priscilla,
In the attachment (Cisco CCNA Exam Guide #640-507 Certification Guide: ISBN
0-7357-0971-8), page 167 - 168, the authors seem to indicate that CBPDUs are
sent from blocked ports!
They are talking about a network in transition. When a
Never mind ... I think I got it!
Thanks,
Pierre-Alex
-Original Message-
From: Pierre-Alex Guanel [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 27, 2002 4:10 PM
To: Daniel Cotts; [EMAIL PROTECTED]
Subject: RE: Spanning tree Protocol Questions [7:36559]
So a blocked port can
o:[EMAIL PROTECTED]]On Behalf Of
Daniel Cotts
Sent: Wednesday, February 27, 2002 2:54 PM
To: [EMAIL PROTECTED]
Subject: RE: Spanning tree Protocol Questions [7:36559]
When you have an opportunity to read Clark and Hamilton the explanation
will
fit. A blocked port is not physically cut. Data
about what happens when bridge 5 e1 becomes functional again.
-Original Message-
From: Pierre-Alex Guanel [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 27, 2002 1:46 PM
To: [EMAIL PROTECTED]
Subject: Re: Spanning tree Protocol Questions [7:36559]
Priscilla
To: Daniel Cotts; [EMAIL PROTECTED]
Subject: RE: Spanning tree Protocol Questions [7:36559]
So a blocked port can receive AND send BPDUs Correct?
Pierre-Alex
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Daniel Cotts
Sent: Wednesday
; [EMAIL PROTECTED]
Subject: RE: Spanning tree Protocol Questions [7:36559]
I should have thought out my previous reply a little more thoroughly. It is
not correct.
Switch 4 e0 in the first instance is the Designated Port for its link with
switch 3. Switch 3 e1 is the Non Designated Port
it
started sending BPDUs to switch 4.
Buy the book.
-Original Message-
From: Pierre-Alex Guanel [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 27, 2002 4:46 PM
To: Daniel Cotts; 'Pierre-Alex Guanel'; [EMAIL PROTECTED]
Subject: RE: Spanning tree Protocol Questions [7:36559
: Spanning tree Protocol Questions [7:36559]
Yes. In Listening State a port sends BPDUs and will accept BPDUs from other
switches until it determines which switch has the lowest path cost to the
root bridge. In our example switch 3 stopped receiving BPDUs from switch 4
due to the failure of switch
Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Daniel Cotts
Sent: Wednesday, February 27, 2002 2:54 PM
To: [EMAIL PROTECTED]
Subject: RE: Spanning tree Protocol Questions [7:36559]
When you have an opportunity to read Clark and Hamilton the explanation
wi
[EMAIL PROTECTED]
Subject: RE: Spanning tree Protocol Questions [7:36559]
When you have an opportunity to read Clark and Hamilton the
explanation
will
fit. A blocked port is not physically cut. Data traffic is blocked
while
BPDUs are allowed. Else, how would it know that a change
Question (1)
Is the first part of this statement correct?
I have looked at the 801d paper for an answer but I am still uncertain.
In blocking mode, an interface will receive and send BPDUs but not send
and receive data traffic.
Question (2)
Are blocked port considered part of the
Comments inline ...
Pierre-Alex wrote:
In blocking mode, an interface will receive and send BPDUs but not send
and receive data traffic.
It will receive and process BPDUs, but will not send BPDUs and will
not receive/send data traffic. If topology changes, port will be
eventually moved into
At 06:45 PM 2/26/02, Pierre-Alex wrote:
Question (1)
Is the first part of this statement correct?
I have looked at the 801d paper for an answer but I am still uncertain.
The IEEE 802.1D document is tough to read. Try the Cisco LAN Switching book
by Clark and Hamilton. It's a masterpiece.
In
Thank you!!!
Pierre-Alex
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Sasa Milic
Sent: Tuesday, February 26, 2002 7:38 PM
To: [EMAIL PROTECTED]
Subject: Re: Spanning tree Protocol Questions [7:36559]
Comments inline ...
Pierre-Alex wrote
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