07-09-2007 10:16 AM - edited 03-03-2019 05:46 PM
We have a dedicated T1 to a remote site. I want to make sure that we have the proper QOS setup. Right now all we have are policy maps that set dscp values. For example:
class voice-s0/0
bandwidth remaining percent 70
set dscp ef
class voice is defined as protocol rtp audio
Our phone sys is an ip office 406
Thanks,
07-09-2007 04:15 PM
Is that your policy-map? What is your class-map?
You will also want to match your control traffic. I don't know what an IP office 406 is but you will need to mark and matching your control packets or you will experience a lot of delays in pick-ups, hang-ups, transfers, etc.
07-09-2007 05:58 PM
Diff serv QoS is a per hop behavior meaning the qos configuration is required end to end for it to properly work.
Voice should generally be assigned to the LLQ (low latency Queuing) using the priority command. Your configuration is just setting the DSCP bit but you need to make sure your VoIP gets always the appropriate bandwidth.
The best possible way would be to set the DSCP bit at the ingress and prioritise this traffic on the egress.
eg. Say your vocie subnet range is 10.10.10.0/24 you can do something like this
class-map match-all voice
match ip rtp 16384 16383-----> matches RTP audio or
Match access group name voice
ip access-list extended voice
permit udp 10.10.10.0 0.0.0.255 any eq range 16384 32767
class-map match-all voice-wan
match ip dscp ef
policy-map ingress
class voip
set ip dscp ef
policy-map WAN
class voice-wan
priority percent 25 ---(depends upon the BW u want to assign)
class class-default
fair-queue
interface fa0/1
service-policy input ingress
interface s0/0
sevice-policy output WAN
HTH, rate if it does
Narayan
07-09-2007 08:53 PM
Hi, [Pls Rate if Helps]
You can design as below:
class-map match-any VoIP
match access-group 100
class-map match-any RTP
match ip precedence 5
match ip precedence 4
policy-map low_level_QoS_backbone
!!Define Voice as Low Level QOS
class RTP
priority 2000
class class-default
fair-queue
!!Define a Top Level QOS Backbone
policy-map top_level_QoS_backbone_
class class-default
shape average
service-policy low_level_QoS_backbone
policy-map Marking
class VoIP
set ip precedence 5
!!ACL
access-list 100 permit ip
INFO:policy-map low_level_QoS_backbone as CHILD QOS policy & policy-map top_level_QoS_backbone_
INFO:policy-map low_level_QoS_backbone as VOICE Traffic & policy-map top_level_QoS_backbone_
PLS RATE if HELPS
Best Regards,
Guru Prasad R
07-10-2007 05:11 AM
Here is my qos config maybe give you guys a better idea:
ip nbar port-map custom-01 udp 5900 5500
ip nbar port-map custom-01 tcp 5900 5500
class-map match-any SDMVoice-FastEthernet0/0.2
match protocol rtp audio
class-map match-any SDMVoice-FastEthernet0/0.4
match protocol rtp audio policy-map SDM-Pol-FastEthernet0/0.2
class SDMManage-FastEthernet0/0.2
--More-- bandwidth remaining percent 3
set dscp cs2
class SDMVoice-FastEthernet0/0.2
priority percent 70
set dscp ef
class SDMRout-FastEthernet0/0.2
bandwidth remaining percent 3
set dscp cs6
class SDMTrans-FastEthernet0/0.2
bandwidth remaining percent 33
set dscp af21
class SDMSignal-FastEthernet0/0.2
bandwidth remaining percent 40
set dscp cs3
class SDMBulk-FastEthernet0/0.2
bandwidth remaining percent 20
set dscp default
policy-map SDM-Pol-FastEthernet0/0.4
class SDMManage-FastEthernet0/0.4
bandwidth remaining percent 3
set dscp cs2
class SDMVoice-FastEthernet0/0.4
priority percent 70
--More-- set dscp ef
class SDMRout-FastEthernet0/0.4
bandwidth remaining percent 3
set dscp cs6
class SDMTrans-FastEthernet0/0.4
bandwidth remaining percent 33
set dscp af21
class SDMSignal-FastEthernet0/0.4
bandwidth remaining percent 40
set dscp cs3
class SDMBulk-FastEthernet0/0.4
bandwidth remaining percent 20
set dscp default
07-10-2007 05:36 AM
Your policy-map class names don't match class-map class names.
07-10-2007 05:59 AM
They look like they do to me. Am I missing something here?
07-13-2007 08:05 PM
hi
plz send full rouoter config (running config) as we can not see class defination and policy map,
i suppose u r using SDM tools , it is easy to config with it but it make the easy config very diffcult , also if u can attach ur topology as well as specify what traffic u want to mark
regards
07-10-2007 06:03 AM
Below is more of my config. Please take a look.
Thanks
10-10-2019 06:37 AM - edited 10-11-2019 07:47 AM
Posted question in a new thread.
07-10-2007 03:55 AM
policy map voice-out
class voice
priority x(x -b.w in kbps , it beter to use b.w in kbps for voice, take the voip b.w calculator (cisco site))
shape average
class-map match-any voice
match ip rtp audio>>>>>>>>>> if u have newer nbar, u can download them free( u can use " any" also)
match ip dscf ef>>>>>>>>>>> (ip phone(cisco) etc should be marking audio call as ef)
match ip precedence 5 >>>>>for awaya ip phone
on the respective router interface ( serial)
service-policy output voice-out
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