QOS VOIP

MOHAMMED-AMINE ACHACHI · ‎07-27-2015

Hello,
I'm worried about the configuration of QoS on a Catalyst 4500 and C2960.
could you help me on the configuration trunk interface between catalyst and 4500 and PABX and between 4500 and 2960 switch.
thank you in advance

Mark Malone · ‎07-27-2015

Hi

is the marking taking place at the source? are you using Cisco phones?

If you just want to trust the markings that are already been set and allow them to be carried you can just set the up links to mls qos trust dscp , if using cisco phones you can set the edge ports to mls qos trust device cisco phone or non cisco you can use the mls qos trust dscp again or if dscp is not supported at access layer use cos but make sure your cos-dscp mapping is in place on local switch mls qos map cos-dscp 0 8 16 24 32 46 48 56

HTH

MOHAMMED-AMINE ACHACHI · ‎07-27-2015

Hi,

Thank you for your reply

there is not a cisco-phone

where is what configured in the 2960 and 4500 ! is it correct !

sur le switch C2960X -POE :

mls qos map policed-dscp 0 10 18 24 46 to 8
mls qos map cos-dscp 0 8 16 24 32 46 48 56
mls qos srr-queue output cos-map queue 1 threshold 3 4 5
mls qos srr-queue output cos-map queue 2 threshold 1 2
mls qos srr-queue output cos-map queue 2 threshold 2 3
mls qos srr-queue output cos-map queue 2 threshold 3 6 7
mls qos srr-queue output cos-map queue 3 threshold 3 0
mls qos srr-queue output cos-map queue 4 threshold 3 1
mls qos srr-queue output dscp-map queue 1 threshold 3 32 33 40 41 42 43 44 45
mls qos srr-queue output dscp-map queue 1 threshold 3 46 47
mls qos srr-queue output dscp-map queue 2 threshold 1 16 17 18 19 20 21 22 23
mls qos srr-queue output dscp-map queue 2 threshold 1 26 27 28 29 30 31 34 35
mls qos srr-queue output dscp-map queue 2 threshold 1 36 37 38 39
mls qos srr-queue output dscp-map queue 2 threshold 2 24
mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53 54 55
mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61 62 63
mls qos srr-queue output dscp-map queue 3 threshold 3 0 1 2 3 4 5 6 7
mls qos srr-queue output dscp-map queue 4 threshold 1 8 9 11 13 15
mls qos srr-queue output dscp-map queue 4 threshold 2 10 12 14
mls qos queue-set output 1 threshold 1 100 100 50 200
mls qos queue-set output 1 threshold 2 125 125 100 400
mls qos queue-set output 1 threshold 3 100 100 100 400
mls qos queue-set output 1 threshold 4 60 150 50 200
mls qos queue-set output 1 buffers 15 25 40 20
mls qos
epm logging

interface GigabitEthernet1/0/4

switchport access vlan Data

switchport mode access

switchport voice vlan Voice

srr-queue bandwidth share 1 30 35 5

queue-set 1

priority-queue out

mls qos trust dscp

auto qos voip trust

spanning-tree portfast

-----------------------------------------Catalyst 4500------------------------------------

policy-map VVLAN-POLICERS

class VVLAN-VOICE

set dscp ef

police 128k bc 8000

conform-action transmit

exceed-action drop

class VVLAN-SIGNALING

set dscp cs3

police 32k bc 8000

conform-action transmit

exceed-action drop

class class-default

set dscp default

police 32k bc 8000

conform-action transmit

exceed-action drop

policy-map DVLAN-POLICERS

class MULTIMEDIA-CONFERENCING

set dscp af41

police 5m bc 8000

conform-action transmit

exceed-action drop

class SIGNALING

set dscp cs3

police 32k bc 8000

conform-action transmit

exceed-action drop

class TRANSACTIONAL-DATA

set dscp af21

police 10m bc 8000

conform-action transmit

exceed-action set-dscp-transmit cs1

class BULK-DATA

set dscp af11

police 10m bc 8000

conform-action transmit

exceed-action set-dscp-transmit cs1

class SCAVENGER

set dscp cs1

police 10m bc 8000

conform-action transmit

exceed-action drop

class class-default

set dscp default

police 10m bc 8000

conform-action transmit

exceed-action set-dscp-transmit cs1

VLAN DATA

service-policy input DVLAN-POLICERS

VLAN VOIP

service-policy input VVLAN-POLICERS

Mark Malone · ‎07-28-2015

2960 looks fine , the 4500 looks to be running the Borderless Campus design setup just make sure when you have the voice set to 128kpbs it only supports codecs g7.11, g7.22,g7.29 so if you using a different codec you may require more bandwidth

Are you having issues currently with this setup with voice calls ?

http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Campus/Borderless_Campus_Network_1-0/Borderless_Campus_1-0_Design_Guide/BN_Campus_QoS.html

MOHAMMED-AMINE ACHACHI · ‎07-28-2015

Thank you very much for your help.
I'll do the first tests next week

MOHAMMED-AMINE ACHACHI · ‎08-21-2015

Hello,

I connected the switch poe on our Catalyst 4500, the telephone SIP works well

I applied the qos on our 4500 router and switch 2960 poe on the data VLAN and voip,

Users have a slow networks when the service-policy input DVLAN-POLICERS is enabled on the VLAN data then back to normal when I disable this option.
i don't understand

I have no telephon SIP is connected to the routeur 4500
it is necessary to apply service-policy input DVLAN-POLICERS in vlan data ?

thanks in advance

MOHAMMED-AMINE ACHACHI · ‎12-05-2015

Hi,

Please i need information: this qos above is applied only on the VLAN VoIP !

Vlan voip
Service-policy input VVLAN-policers.?

Phone SIP (POE switch) --- ---- 4500 Catalyste ------- PABX

I have a problem, the users complain of network slowdowns that I apply the qos below:

policy-map VVLAN-POLICERS

class VVLAN-VOICE

set dscp ef

police 128k bc 8000

conform-action transmit

exceed-action drop

class VVLAN-SIGNALING

set dscp cs3

police 32k bc 8000

conform-action transmit

exceed-action drop

class class-default

set dscp default

police 32k bc 8000

conform-action transmit

exceed-action drop

policy-map DVLAN-POLICERS

class MULTIMEDIA-CONFERENCING

set dscp af41

police 5m bc 8000

conform-action transmit

exceed-action drop

class SIGNALING

set dscp cs3

police 32k bc 8000

conform-action transmit

exceed-action drop

class TRANSACTIONAL-DATA

set dscp af21

police 10m bc 8000

conform-action transmit

exceed-action set-dscp-transmit cs1

class BULK-DATA

set dscp af11

police 10m bc 8000

conform-action transmit

exceed-action set-dscp-transmit cs1

class SCAVENGER

set dscp cs1

police 10m bc 8000

conform-action transmit

exceed-action drop

class class-default

set dscp default

police 10m bc 8000

conform-action transmit

exceed-action set-dscp-transmit cs1

VLAN DATA

service-policy input DVLAN-POLICERS

VLAN VOIP

service-policy input VVLAN-POLICERS

you have an idea and thank you for your help

Amine

Joseph W. Doherty · ‎07-27-2015

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Posting

You'll need to provide additional information.

What are you specifically worried about in your existing configurations? What specific devices are in play, including their specific IOS? What's you're overall QoS model?