QoS for Voice and Data

[nihit-tandon]

Hi, I need to apply qos for  128 Kbps bandwidth ,only at the CE end , where in 64Kbps should be for voice traffic ,

in case voice isnt there then remaining should be allocated for Data.

Will this help me in case QoS is only applied at the CPE end.

[smitesh kharecha · Accepted solution]

Hi Nihit,

Applying QoS only at CPE can help you in your requirement.

However, if your ISP don't honour your marking, then their won't be end to end reservation of bandwidth.

In simple terms, you will be allocation 64kbps only at CPE and once traffic leaves your Router, there won't be any gaurantee of PE or P router allocating same bandwidth to voice traffic

HTH,

Smitesh

[nihit-tandon]

Hi Smithesh,

Thanks for replying, can you help me with the sample config to be applied.

[smitesh kharecha]

Hi Nihit,

What is your VoIP setup and how it is connected o router / switch ??

Sample config  can be (assumption that you use different IP Subnet for VoIPs)

*** Below config will classify the packets***

ip access-list 10 permit

*** Below config will mark the packets ***

class-map VoIP

match access-group 10

exit

*** Below config will reserve the required bandwidth ***

policy-map VoIP

class VoIP

bandwidth 64

exit

int

service-policy  output VoIP

exit

HTH,

Smitesh