RE: "Classification" vs. "Marking" [7:56792]
Thanks to everyone for their responses! Hopefully I'll get a question on this now. ;-) Strengh and Honor, Maximus On Mon, 4 Nov 2002 12:40:47 GMT Juan Blanco wrote: > Maximums, > Classification is the ability to identify and > group specific packets(source > and destination ip address..or > source and destination UDP port number). After > the packet has been > classified then you Mark it by setting bits in > the IP header(DSCP, IP > precedence.) > > Juan Blanco > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:nobody@;groupstudy.com]On Behalf Of > ""B.J. Wilson"" > Sent: Monday, November 04, 2002 6:39 AM > To: [EMAIL PROTECTED] > Subject: "Classification" vs. "Marking" > [7:56792] > > > Hey Proximo - > > I'm sitting here looking over the outline of > the DQOS test, and one of the > bullets says to "Explain the difference between > classification and marking." > I'm looking over the QoS Config Guide, and > can't seem to find any clear > distinction between the two - the Guide seems > to be using the terms > interchangeably. Anyone have any insight into > this? > > Thanks, > > Maximus > CCNP, SPQR > to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=56799&t=56792 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: "Classification" vs. "Marking" [7:56792]
Maximums, Classification is the ability to identify and group specific packets(source and destination ip address..or source and destination UDP port number). After the packet has been classified then you Mark it by setting bits in the IP header(DSCP, IP precedence.) Juan Blanco -Original Message- From: [EMAIL PROTECTED] [mailto:nobody@;groupstudy.com]On Behalf Of ""B.J. Wilson"" Sent: Monday, November 04, 2002 6:39 AM To: [EMAIL PROTECTED] Subject: "Classification" vs. "Marking" [7:56792] Hey Proximo - I'm sitting here looking over the outline of the DQOS test, and one of the bullets says to "Explain the difference between classification and marking." I'm looking over the QoS Config Guide, and can't seem to find any clear distinction between the two - the Guide seems to be using the terms interchangeably. Anyone have any insight into this? Thanks, Maximus CCNP, SPQR Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=56797&t=56792 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: "Classification" vs. "Marking" [7:56792]
Hey Maximus :-) >From my understanding of what I have been reading, classification is the process of 'selecting / identifying' the packets that you would/could then use to mark for QoS Purposes. You 'define' the packets on which you would like to perform some kind of congestion management / avoidance / etc. action Packets are classified by their source address, destination address, source port, dest port, ACLs, etc. I take Packet Marking to be the function of acting on classified packets by modifying the TOS, DSCP, etc field to suit your QoS requirements. That's what I think ... And I hope I'm right Manish -Original Message- From: ""B.J. Wilson"" [mailto:analogkid01@;mindspring.com] Sent: 04 November 2002 13:39 To: [EMAIL PROTECTED] Subject: "Classification" vs. "Marking" [7:56792] Hey Proximo - I'm sitting here looking over the outline of the DQOS test, and one of the bullets says to "Explain the difference between classification and marking." I'm looking over the QoS Config Guide, and can't seem to find any clear distinction between the two - the Guide seems to be using the terms interchangeably. Anyone have any insight into this? Thanks, Maximus CCNP, SPQR Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=56798&t=56792 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: "Classification" vs. "Marking" [7:56792]
Maximus, from "IP QoS" book: Classifier: The classifier selects a packet in a traffic stream based on the content of some portion of the packet header. The most common way to classify traffic is based on the DSCP field, but you can classify traffic based on the other fields in the packet header. This function identifies a packet's traffic class. Marker: This function helps write/rewrite the DSCP field of a packet based on its traffic class. Regards, Persio - Original Message - From: """B.J. Wilson""" To: Sent: Monday, November 04, 2002 8:38 AM Subject: "Classification" vs. "Marking" [7:56792] > Hey Proximo - > > I'm sitting here looking over the outline of the DQOS test, and one of the > bullets says to "Explain the difference between classification and marking." > I'm looking over the QoS Config Guide, and can't seem to find any clear > distinction between the two - the Guide seems to be using the terms > interchangeably. Anyone have any insight into this? > > Thanks, > > Maximus > CCNP, SPQR Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=56795&t=56792 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: "Classification" vs. "Marking" [7:56792]
Maximus, This is my interpretation: - When the packet is identified, but not marked classification is said to be on a per hop basis o The classification pertains only to the device that is in on, not passed to the next router o PQ, CQ - When marked for network wide use, IP precedence bits can be set Joe At 11:38 AM 11/4/2002 +, \"\"B.J. Wilson\"\" wrote: Hey Proximo - I'm sitting here looking over the outline of the DQOS test, and one of the bullets says to "Explain the difference between classification and marking." I'm looking over the QoS Config Guide, and can't seem to find any clear distinction between the two - the Guide seems to be using the terms interchangeably. Anyone have any insight into this? Thanks, Maximus CCNP, SPQR &i=56792&t=56792 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=56793&t=56792 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
"Classification" vs. "Marking" [7:56792]
Hey Proximo - I'm sitting here looking over the outline of the DQOS test, and one of the bullets says to "Explain the difference between classification and marking." I'm looking over the QoS Config Guide, and can't seem to find any clear distinction between the two - the Guide seems to be using the terms interchangeably. Anyone have any insight into this? Thanks, Maximus CCNP, SPQR Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=56792&t=56792 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
