When would you ever have two active streams to a phone? I can't think of a set of circumstances that would have more than one RTP stream hitting a phone.
Jonathan On Thu, Aug 27, 2009 at 11:07 AM, James Key<j...@jackhenry.com> wrote: > Anyone have any guidance on the questions below I posted yesterday? > > > > -James > > > > From: ccie_voice-boun...@onlinestudylist.com > [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of James Key > Sent: Wednesday, August 26, 2009 2:09 PM > To: ccie_voice@onlinestudylist.com > Subject: [OSL | CCIE_Voice] 3750 QoS Question > > > > Reading over the QoS SRND and trying to get a better understanding of 3750 > QoS and more specifically, the Conditionally-Trusted IP Phone + PC with > Scavenger-Class QoS (Basic) Model. I understand the ACLs and marking traffic > as well as queuing, but am having some difficulty in understanding the > theory behind the policing within the Policy-Maps. > > > > example: > > > > class-map match-all VVLAN-VOICE > > match access-group name VVLAN-VOICE > > > > class-map match-all VVLAN-CALL-SIGNALING > > match access-group name VVLAN-CALL-SIGNALING > > > > policy-map IPPHONE+PC-BASIC > > class VVLAN-VOICE > > set ip dscp 46 > > police 128000 8000 exceed-action drop > > class VVLAN-CALL-SIGNALING > > set ip dscp 24 > > police 32000 8000 exceed-action policed-dscp-transmit > > > > > > ip access list extended VVLAN-VOICE > > permit udp 10.1.110.0 0.0.0.255 any range 16384 32767 > > > > ip access list extended VVLAN-CALL-SIGNALING > > permit tcp 10.1.110.0 0.0.0.255 any range 2000 2002 > > > > > > the comment for the police statement under class VVLAN-VOICE states that > this will only allow one voice call per switchport VVLAN. So my question > is (I hope this doesn’t sound to dumb!), what happens to a 2nd,3rd, and so > on concurrent call that may come from an IP Phone connected to a switchport > with this policy? Same question for the police statement under class > VVLAN-CALL-SIGNALING. Is it that any signaling traffic that exceeds 32k > will be marked down to CS1? > > > > > > any clarification on this would be much appreciated! > > > > > > James > > > > > > > > NOTICE: This electronic mail message and any files transmitted with it are > intended > > exclusively for the individual or entity to which it is addressed. The > message, > > together with any attachment, may contain confidential and/or privileged > information. > > Any unauthorized review, use, printing, saving, copying, disclosure or > distribution > > is strictly prohibited. If you have received this message in error, please > > immediately advise the sender by reply email and delete all copies. > > NOTICE: This electronic mail message and any files transmitted with it are > intended > exclusively for the individual or entity to which it is addressed. The > message, > together with any attachment, may contain confidential and/or privileged > information. > Any unauthorized review, use, printing, saving, copying, disclosure or > distribution > is strictly prohibited. If you have received this message in error, please > immediately advise the sender by reply email and delete all copies. > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
