Re: CBWFQ Newbie [7:73034]
Remember with CBWFQ'ing you are reserving bandwidth, but not when the Voice queue will be serviced. Voice quality does not tolerate delay or jitter. The best would be change the bandwidth command in the Voice class map to priority. This would changing the queuing on the voice stream to PQ and change the overall queuing from CBWFQ to LLQ (PQ/CBWFQ). wrote in message news:[EMAIL PROTECTED] > Hi guys, > > Just a quick one and am sure this has been asked many times. > > Two rtrs with serial line between them. On one router > > ! > hostname QOS-RTR1 > ! > class-map Data-Service > match access-group name Data-Hosts > ! > class-map Voice-Service > match access-group name Voice-Hosts > ! > policy-map Customer1 > class Data-Service >bandwidth percent 50 > class Voice-Service >bandwidth percent 20 > ! > ip access-list extended Data-Hosts > permit ip host 10.1.1.22 any > ip access-list extended Voice-Hosts > permit ip host 10.1.1.21 any > ! > Interface serial0/0 > ip address x.x.x.x x.x.x.x > Service-policy out Customer1 > bandwidth 512 > > > > > Now, if there is only a data stream running from the one configured host in > the ACL, and I have a 512k line, This data traffic even though it is > configured for 50% of the bandwidth, can automatically use 100% of the > bandwidth (if I have the max-bandwidth thing set to 100) Correct? > > Then if I start the voice stream from the other host, that has 20% of the > bandwidth, this will then scale down the data traffic so that the 20% > bandwidth can be guaranteed for the voice stream. > > Please can someone confirm. > > Many thx indeed. > > > Ken Farrington > Global Networks, Barclays Capital, 5 The North Colonnade, Canary > Wharf, London, E14 4BB > * Tel : 020 7773 3550 > * Mob : 07768-866655 > * [EMAIL PROTECTED] > > > > > > For more information about Barclays Capital, please > visit our web site at http://www.barcap.com. > > > Internet communications are not secure and therefore the Barclays > Group does not accept legal responsibility for the contents of this > message. Although the Barclays Group operates anti-virus programmes, > it does not accept responsibility for any damage whatsoever that is > caused by viruses being passed. Any views or opinions presented are > solely those of the author and do not necessarily represent those of the > Barclays Group. Replies to this email may be monitored by the Barclays > Group for operational or business reasons. > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73057&t=73034 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: CBWFQ Newbie [7:73034]
Since you are playing around with QoS, you might as well take the Cisco DQoS test. I took it last week and passed. -dlb wrote in message news:[EMAIL PROTECTED] > Hi guys, > > Just a quick one and am sure this has been asked many times. > > Two rtrs with serial line between them. On one router > > ! > hostname QOS-RTR1 > ! > class-map Data-Service > match access-group name Data-Hosts > ! > class-map Voice-Service > match access-group name Voice-Hosts > ! > policy-map Customer1 > class Data-Service >bandwidth percent 50 > class Voice-Service >bandwidth percent 20 > ! > ip access-list extended Data-Hosts > permit ip host 10.1.1.22 any > ip access-list extended Voice-Hosts > permit ip host 10.1.1.21 any > ! > Interface serial0/0 > ip address x.x.x.x x.x.x.x > Service-policy out Customer1 > bandwidth 512 > > > > > Now, if there is only a data stream running from the one configured host in > the ACL, and I have a 512k line, This data traffic even though it is > configured for 50% of the bandwidth, can automatically use 100% of the > bandwidth (if I have the max-bandwidth thing set to 100) Correct? > > Then if I start the voice stream from the other host, that has 20% of the > bandwidth, this will then scale down the data traffic so that the 20% > bandwidth can be guaranteed for the voice stream. > > Please can someone confirm. > > Many thx indeed. > > > Ken Farrington > Global Networks, Barclays Capital, 5 The North Colonnade, Canary > Wharf, London, E14 4BB > * Tel : 020 7773 3550 > * Mob : 07768-866655 > * [EMAIL PROTECTED] > > > > > > For more information about Barclays Capital, please > visit our web site at http://www.barcap.com. > > > Internet communications are not secure and therefore the Barclays > Group does not accept legal responsibility for the contents of this > message. Although the Barclays Group operates anti-virus programmes, > it does not accept responsibility for any damage whatsoever that is > caused by viruses being passed. Any views or opinions presented are > solely those of the author and do not necessarily represent those of the > Barclays Group. Replies to this email may be monitored by the Barclays > Group for operational or business reasons. > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73059&t=73034 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: CBWFQ Newbie [7:73034]
Jonathan, You meant to be the priority command on the Voice class-map, not the Data class-map. > I think you want to use a variation on CBWFQ called LLQ. This > uses the "priority" command instead of "bandwidth", to assign > voice traffic to a Priority Queue which will take precedence over > other traffic. > > In other words: > > policy-map Customer1 >class Data-Service > priority 50 >class Voice-Service > bandwidth percent 20 > > Here's a link to the "priority" command > > http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fqos_c/fqcprt2/qcfwfq.htm#1022204 > > and here's a link to an LLQ example: > > http://www.cisco.com/univercd/cc/td/doc/cisintwk/intsolns/qossol/qosvoip.htm#xtocid12 Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73058&t=73034 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: CBWFQ Newbie [7:73034]
That is how I understand it. For voice I would use 'priority' instead 'bandwidth'. Regards, Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73041&t=73034 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: CBWFQ Newbie [7:73034]
[EMAIL PROTECTED] wrote: > Hi guys, > > Just a quick one and am sure this has been asked many times. > > Two rtrs with serial line between them. On one router > > ! > hostname QOS-RTR1 > ! > class-map Data-Service > match access-group name Data-Hosts > ! > class-map Voice-Service > match access-group name Voice-Hosts > ! > policy-map Customer1 > class Data-Service >bandwidth percent 50 > class Voice-Service >bandwidth percent 20 > ! > ip access-list extended Data-Hosts > permit ip host 10.1.1.22 any > ip access-list extended Voice-Hosts > permit ip host 10.1.1.21 any > ! > Interface serial0/0 > ip address x.x.x.x x.x.x.x > Service-policy out Customer1 > bandwidth 512 > > > > > Now, if there is only a data stream running from the one configured host in > the ACL, and I have a 512k line, This data traffic even though it is > configured for 50% of the bandwidth, can automatically use 100% of the > bandwidth (if I have the max-bandwidth thing set to 100) Correct? > > Then if I start the voice stream from the other host, that has 20% of the > bandwidth, this will then scale down the data traffic so that the 20% > bandwidth can be guaranteed for the voice stream. > > Please can someone confirm. > > Many thx indeed. > > > Ken Farrington I think you want to use a variation on CBWFQ called LLQ. This uses the "priority" command instead of "bandwidth", to assign voice traffic to a Priority Queue which will take precedence over other traffic. In other words: policy-map Customer1 class Data-Service priority 50 class Voice-Service bandwidth percent 20 Here's a link to the "priority" command http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fqos_c/fqcprt2/qcfwfq.htm#1022204 and here's a link to an LLQ example: http://www.cisco.com/univercd/cc/td/doc/cisintwk/intsolns/qossol/qosvoip.htm#xtocid12 HTH, Jonathan Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73042&t=73034 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
CBWFQ Newbie [7:73034]
Hi guys, Just a quick one and am sure this has been asked many times. Two rtrs with serial line between them. On one router ! hostname QOS-RTR1 ! class-map Data-Service match access-group name Data-Hosts ! class-map Voice-Service match access-group name Voice-Hosts ! policy-map Customer1 class Data-Service bandwidth percent 50 class Voice-Service bandwidth percent 20 ! ip access-list extended Data-Hosts permit ip host 10.1.1.22 any ip access-list extended Voice-Hosts permit ip host 10.1.1.21 any ! Interface serial0/0 ip address x.x.x.x x.x.x.x Service-policy out Customer1 bandwidth 512 Now, if there is only a data stream running from the one configured host in the ACL, and I have a 512k line, This data traffic even though it is configured for 50% of the bandwidth, can automatically use 100% of the bandwidth (if I have the max-bandwidth thing set to 100) Correct? Then if I start the voice stream from the other host, that has 20% of the bandwidth, this will then scale down the data traffic so that the 20% bandwidth can be guaranteed for the voice stream. Please can someone confirm. Many thx indeed. Ken Farrington Global Networks, Barclays Capital, 5 The North Colonnade, Canary Wharf, London, E14 4BB * Tel : 020 7773 3550 * Mob : 07768-866655 * [EMAIL PROTECTED] For more information about Barclays Capital, please visit our web site at http://www.barcap.com. Internet communications are not secure and therefore the Barclays Group does not accept legal responsibility for the contents of this message. Although the Barclays Group operates anti-virus programmes, it does not accept responsibility for any damage whatsoever that is caused by viruses being passed. Any views or opinions presented are solely those of the author and do not necessarily represent those of the Barclays Group. Replies to this email may be monitored by the Barclays Group for operational or business reasons. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73034&t=73034 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
