Re: what is the purpose of FECN?
The correct answer is C. n a link layer network such as Frame Relay, the network sends messages with the forward explicit congestion notification (FECN) or backwards explicit congestion notification (BECN) if there is congestion. With the DTS feature, the traffic shaping adaptive mode takes advantage of these signals and adjusts the traffic descriptors. This approximates the rate to the available bandwidth along the path. FECN as use to inform of the available bandwith. Laurel Redd wrote: I would say a Morgan - Original Message - From: "Shaw, Winston Mr." [EMAIL PROTECTED] To: "'cslx'" [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Sunday, November 19, 2000 11:25 AM Subject: RE: what is the purpose of FECN? Looks like a trick question. I would choose answer a. Answer b corresponds to what is called the BECN. The reason that it is a trick question is that the immediate reaction would be to discard Answer a because FECN is not the only way to tell if a packet experienced congestion. Winston. -Original Message- From: cslx [mailto:[EMAIL PROTECTED]] Sent: Sunday, November 19, 2000 10:39 AM To: [EMAIL PROTECTED] Subject: what is the purpose of FECN? what is the purpose of FECN? a.To tell the router that a packet experienced congestion b.To tell the router that packets it is sending to a remote site are experiencing congestion c.To tell the router that there is bandwidth available _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: what is the purpose of FECN?
FECN=Bit set by a frame relay network to inform the DTE receiving the frame that congestion was experienced in the path from source to dest.DTE receiving frame with the FECN bit set can request that higher level protocols take flow control action,as appropriate. Therefore A would be the coreect ans. Tim From: Marc Giroux [EMAIL PROTECTED] Reply-To: Marc Giroux [EMAIL PROTECTED] To: Laurel Redd [EMAIL PROTECTED] CC: [EMAIL PROTECTED] Subject: Re: what is the purpose of FECN? Date: Wed, 22 Nov 2000 10:16:18 -0500 The correct answer is C. n a link layer network such as Frame Relay, the network sends messages with the forward explicit congestion notification (FECN) or backwards explicit congestion notification (BECN) if there is congestion. With the DTS feature, the traffic shaping adaptive mode takes advantage of these signals and adjusts the traffic descriptors. This approximates the rate to the available bandwidth along the path. FECN as use to inform of the available bandwith. Laurel Redd wrote: I would say a Morgan - Original Message - From: "Shaw, Winston Mr." [EMAIL PROTECTED] To: "'cslx'" [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Sunday, November 19, 2000 11:25 AM Subject: RE: what is the purpose of FECN? Looks like a trick question. I would choose answer a. Answer b corresponds to what is called the BECN. The reason that it is a trick question is that the immediate reaction would be to discard Answer a because FECN is not the only way to tell if a packet experienced congestion. Winston. -Original Message- From: cslx [mailto:[EMAIL PROTECTED]] Sent: Sunday, November 19, 2000 10:39 AM To: [EMAIL PROTECTED] Subject: what is the purpose of FECN? what is the purpose of FECN? a.To tell the router that a packet experienced congestion b.To tell the router that packets it is sending to a remote site are experiencing congestion c.To tell the router that there is bandwidth available _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get more from the Web. FREE MSN Explorer download : http://explorer.msn.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: what is the purpose of FECN?(all wrong)
Hey group, Just to be technical: I would say that they are all wrong. It's not the "packets" experience congestion as the answers say, it's the links that do. Just a thought. Mark Zabludovsky ~ CCNA, CCDA, 1/2-NP [EMAIL PROTECTED] "Even if I knew I had only 1 more week to live, I would still schedule my CCIE lab. I would just have to work a little harder I guess. After all, without any goals in life, I'm dead already." ~Mark Zabludovsky~ In a message dated 11/22/00 9:46:16 PM Eastern Standard Time, [EMAIL PROTECTED] writes: what is the purpose of FECN? a.To tell the router that a packet experienced congestion b.To tell the router that packets it is sending to a remote site are experiencing congestion c.To tell the router that there is bandwidth available
Re: what is the purpose of FECN?
I would say a Morgan - Original Message - From: "Shaw, Winston Mr." [EMAIL PROTECTED] To: "'cslx'" [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Sunday, November 19, 2000 11:25 AM Subject: RE: what is the purpose of FECN? Looks like a trick question. I would choose answer a. Answer b corresponds to what is called the BECN. The reason that it is a trick question is that the immediate reaction would be to discard Answer a because FECN is not the only way to tell if a packet experienced congestion. Winston. -Original Message- From: cslx [mailto:[EMAIL PROTECTED]] Sent: Sunday, November 19, 2000 10:39 AM To: [EMAIL PROTECTED] Subject: what is the purpose of FECN? what is the purpose of FECN? a.To tell the router that a packet experienced congestion b.To tell the router that packets it is sending to a remote site are experiencing congestion c.To tell the router that there is bandwidth available _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: what is the purpose of FECN?
Isn't it that " the path the packet IS GOING TO TAKE to get to the destination is experiencing congestion?" -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Sunday, November 19, 2000 2:41 AM To: [EMAIL PROTECTED] Subject: RE: what is the purpose of FECN? The "F" in FECN means forward, so I choose "a." The packet arrives at the dest, notifying the dest that it experienced congestion along the way, so that rules out "b." Which is actually the correct answer if the question were "What is the purpose of BECN" "c." is not a function of FECN nor BECN. Sure wish "the router" was defined ;-) but this does keep it realistic ;-) Tim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of cslx Sent: Sunday, November 19, 2000 10:39 AM To: [EMAIL PROTECTED] Subject: what is the purpose of FECN? what is the purpose of FECN? a.To tell the router that a packet experienced congestion b.To tell the router that packets it is sending to a remote site are experiencing congestion c.To tell the router that there is bandwidth available _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: what is the purpose of FECN?
The "F" in FECN means forward, so I choose "a." The packet arrives at the dest, notifying the dest that it experienced congestion along the way, so that rules out "b." Which is actually the correct answer if the question were "What is the purpose of BECN" "c." is not a function of FECN nor BECN. Sure wish "the router" was defined ;-) but this does keep it realistic ;-) Tim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of cslx Sent: Sunday, November 19, 2000 10:39 AM To: [EMAIL PROTECTED] Subject: what is the purpose of FECN? what is the purpose of FECN? a.To tell the router that a packet experienced congestion b.To tell the router that packets it is sending to a remote site are experiencing congestion c.To tell the router that there is bandwidth available _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: what is the purpose of FECN?
I believe the answer is "B". FECN is bit set by a frame-relay network to inform the DTE receiving the frame that congestion was experienced in the path from Source to Destination. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of cslx Sent: Sunday, November 19, 2000 1:39 AM To: [EMAIL PROTECTED] Subject: what is the purpose of FECN? what is the purpose of FECN? a.To tell the router that a packet experienced congestion b.To tell the router that packets it is sending to a remote site are experiencing congestion c.To tell the router that there is bandwidth available _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: what is the purpose of FECN?
Looks like a trick question. I would choose answer a. Answer b corresponds to what is called the BECN. The reason that it is a trick question is that the immediate reaction would be to discard Answer a because FECN is not the only way to tell if a packet experienced congestion. Winston. -Original Message- From: cslx [mailto:[EMAIL PROTECTED]] Sent: Sunday, November 19, 2000 10:39 AM To: [EMAIL PROTECTED] Subject: what is the purpose of FECN? what is the purpose of FECN? a.To tell the router that a packet experienced congestion b.To tell the router that packets it is sending to a remote site are experiencing congestion c.To tell the router that there is bandwidth available _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: what is the purpose of FECN?
FECN - Forward Explicit Congestion Notification This is a bit within the address field which notifies the receiving device that the network is experiencing congestion. The end device (ie., router, FRAD etc.) is informed that congestion was experienced on route...subsequent packets could be delayed, discarded or even damaged. The end device *should* take remedial action to adjust to the new transmission environment, from the source...ie., inform the source to "throttle-back". This is achieved by using a complimentary bit field in the address field...BECN (Backward Explicit Congestion Notification)...in packets sent to the source router/FRAD. In the real world, what tends to happen, is that there is no way traffic from upstream hosts (ie., PC's, servers etc.) can be slowed down to the router/FRAD. Increasing the size of the buffers (ie., memory) at the source router helps, but this is useless in the face of severe packet loss to the destination. Hence, the concept of "Becky and Fecky" can only be really used to detect congestion, by setting SNMP trap conditions, not give *real* throttle-control, as the text books would describe! Without a though the answers: A Regards, Serge :) - Original Message - From: Shaw, Winston Mr. [EMAIL PROTECTED] To: 'cslx' [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Sunday, November 19, 2000 6:25 PM Subject: RE: what is the purpose of FECN? Looks like a trick question. I would choose answer a. Answer b corresponds to what is called the BECN. The reason that it is a trick question is that the immediate reaction would be to discard Answer a because FECN is not the only way to tell if a packet experienced congestion. Winston. -Original Message- From: cslx [mailto:[EMAIL PROTECTED]] Sent: Sunday, November 19, 2000 10:39 AM To: [EMAIL PROTECTED] Subject: what is the purpose of FECN? what is the purpose of FECN? a.To tell the router that a packet experienced congestion b.To tell the router that packets it is sending to a remote site are experiencing congestion c.To tell the router that there is bandwidth available _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
