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New Member

Help to configure LLQ

Anyone knows how to get the bandwidth data needed by the priority command to configure LLQ. with IOS 12.2.

I have a serial 256Kbps Link and wants, to apply QoS to the Voice only.

The only voice streams comes from a ata186.

Tanks in advance!!

New Member

Re: Help to configure LLQ

your best bet is to use the QDM product which is a free download from cisco.

this configures llq as long as u know what setting u need to put in

New Member

Re: Help to configure LLQ

Here is a sample config for LLQ for ip phone traffic this is based on a 128k circuit with 64k cir frame relay

------------access list to identify the traffic-------------

access-list 150 permit ip any any dscp ef

access-list 150 permit ip any any precedence critical

access-list 151 permit ip any any dscp af31

access-list 151 permit ip any any precedence flash

---------------Class maps and policy maps------------

class-map voip

match access-group 150

class-map cmcontrol

match access-group 151



policy-map voip-64k

class voip

priority 48

class cmcontrol

bandwidth percent 15

class class-default


---------------map class for FR DLCI---------------

map-class frame-relay FR-voip

no frame-relay adaptive-shaping

frame-relay cir 128000

frame-relay bc 1250

frame-relay be 0

frame-relay mincir 64000

service-policy output voip-64k

frame-relay fragment 160

this is onyl needed for Frame relay, if you have a point to point just apply the service-policy output command to the serial interface

--------------------interface commands-------------

interface Serial0

bandwidth 128

no ip address

encapsulation frame-relay IETF

service-module t1 timeslots 1-2

frame-relay traffic-shaping

frame-relay lmi-type ansi


interface Serial0.100 point-to-point

ip address

frame-relay interface-dlci 100 CISCO

class FR-voip

frame-relay ip rtp header-compression


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