VoIP QoS (T.S. 3/10/2000)

 

Multilink PPP Configuration w/QoS (low bandwidth circuits)

 

 

! PPP MultiLink Configuration

interface Serial0

   bandwidth 384

no ip address

encapsulation ppp

no ip mroute-cache

load-interval 30

no fair-queue

ppp multilink

multilink-group 1

!

interface Serial1

bandwidth 384

no ip address

encapsulation ppp

no ip mroute-cache

load-interval 30

no fair-queue

ppp multilink

multilink-group 1

 

! The virtual template and QoS configuration

interface Multilink1

ip address 172.16.10.1 255.255.255.0

ip tcp header-compression iphc-format

no ip mroute-cache

load-interval 30

service-policy output QoS-Policy

ppp multilink

! Set fragment to 10 ms

ppp multilink fragment-delay 10

! Turn on interleaving

ppp multilink interleave

multilink-group 1

ip rtp header-compression iphc-format

!

!

class-map VoIP-RTP

match access-group 100

class-map VoIP-Control

match access-group 101

!

policy-map QoS-Policy

class VoIP-RTP

! Reserve 100kbps for Voice - Set this based on phone count !

priority 100

class VoIP-Control

bandwidth 8

class class-default

fair-queue

!

access-list 100 permit ip any any precedence 5

access-list 100 permit ip any any dscp ef

!

!Skinny Protocol

access-list 101 permit tcp any host 172.16.0.10 range 2000 2002

!

!MGCP Protocol

access-list 101 permit udp any host 172.16.0.10 2427

access-list 101 permit tcp any host 172.16.0.10 2428

!

!H.323 Protocol

access-list 101 permit tcp any host 172.16.0.10 1720

access-list 101 permit tcp any host 172.16.0.10 range 11000 11999