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New Member

QOS on traffic.

Can anyone help on this below configuration

Platinum (According to real time class)   

****************************************

Voice RTP

Gold (40% of remaining)

***********************

Voice signalling

Citrix

Video conferencing

Silver (20% of remaining)

***********************

Notes

Internet browsing

Bronze (10% of remaining)

***********************   

SNMP

TFTP   

Best effort   

***********************   

Other   

4 REPLIES
Silver

Re: QOS on traffic.

QoS is a end to end configuration. Your service provider should respect you markings, otherwise all packets will be treated equally once they leave your router. Below is an example config, you can modify the names and percentages based on your requirements. Hope this helps.

class-map match-any Platinum-Voice

match dscp ef

match protocol RTP

class-map match-any Gold-video-signaling

match dscp af41

match dscp af31

match protocol citrix

class-map match-any Silver-Internet

match protocol http

match protocol https

class-map match-any Bronze-Telnet-SNMP

match protocol tftp

match protocol snmp

policy-map qos

class-map match-any Platinum-Voice

priority percent 20

set ip dscp ef

class-map match-any Gold-video-signaling

set ip dscp af31

bandwidth remaining percent 60

class-map match-any Silver-Internet

set ip dscp af23

bandwidth remaining percent 20

class-map match-any Bronze-Telnet-SNMP

set ip dscp af21

bandwidth remaining percent 10

class class-default

set ip dscp default

bandwidth remaining percent 10

Siddhartha
New Member

Re: QOS on traffic.

Hi team,

Can we configure the same using SRR queue?

Thanks in advance

New Member

Re: QOS on traffic.

Hi all,

can we configure in this manner, after marking the packets


Class-map PLATINUM
match access-gr name PLATINUM

class-map GOLD
match access-gr name GOLD

class-map SILVER
match access-gr name SILVER

CLass-map BRONZE
match acce-gr name BRONZE

class class-defa

policy-map QOS
class PLATINUM
set dscp ef
class GOLD
set dscp af31
class SILVER
set dscp af22
class BRONZE
set dscp af11
class class-def
set dscp def

int
srr bandwidth shape 5 0 0 0
srr-queue bandwidth share 1 4 2 1
srr-queue bandwidth limit
mls qos tr dscp
priority-queue out

int
Service-po input QOS
mls qos tr dscp
priority-queue out

mls qos srr-queue output dscp-map queue 1 threshold 3 46
mls qos srr-queue output dscp-map queue 1 threshold 2 26

mls qos srr-queue output dscp-map queue 3 threshold 2 10 18
mls qos srr-queue output dscp-map queue 3 threshold 3 0

Silver

Re: QOS on traffic.

looks good below are small changes

int
srr bandwidth shape 5 0 0 0
srr-queue bandwidth share 1 4 2 1
srr-queue bandwidth limit ---> by default there is no limit

mls qos tr dscp
priority-queue out

int
Service-po input QOS
mls qos tr dscp ----------can't use both MQC and trust commands on the same interface
priority-queue out

mls qos queue-set output 1 buffers 20 40 30 10

mls qos queue-set output 1 threshold 1 5 20 100 200

mls qos queue-set output 1 threshold 2 50 80 100 100

mls qos queue-set output 1 threshold 3 50 80 100 150

mls qos queue-set output 1 threshold 4 30 70 100 250

mls qos srr-queue output dscp-map queue 1 threshold 3 46

mls qos srr-queue output dscp-map queue 1 threshold 1 26 20 10 0

mls qos srr-queue output dscp-map queue 2 threshold 3 26

mls qos srr-queue output dscp-map queue 2 threshold 1 20 10 0

mls qos srr-queue output dscp-map queue 3 threshold 3 20 10
mls qos srr-queue output dscp-map queue 3 threshold 1 0

mls qos srr-queue output dscp-map queue 4 threshold 3 0

mls qos srr-queue output dscp-map queue 4 threshold 2 46 26

mls qos srr-queue output dscp-map queue 4 threshold 1 20 10

According to the above config

queue 1 is the priority queue with 200 Mbps bandwidth (assuming 1G link on the router) and it will start dropping packets with af31,af22,af11 and default markings when it reaches 5% of its allocated bandwidth.

queue 2 ,3 and 4 share the remaining bandwidth (457.14 Mbps (4/7)*(1000-200) ,228.57 Mbps and 114.xx Mbps).

queue 2 will start to drop the packets with af22,af11 and default markings when it reaches 50% of its allocated bandwidth.

queue 3 will start dropping packets with default markings when it reaches 50% of its allocated bandwidth.

Queue 4 will start dropping packets with ef and af31 markings when it reaches 70% and af22 and af11 markings when it reaches 30% of its allocated bandwidth

you can change the thresholds and percentages based on your requirements.Below is the document which explains QoS in detail

http://www.cisco.com/en/US/products/hw/switches/ps5023/products_tech_note09186a0080883f9e.shtml

Siddhartha
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