Dear Members,
I am new member of this group. If my below problem is outside the scope of
this group, please suggest me a suitable group where I can post the same
below proble.
I am trying to give priority to voice over other traffic by setting up a
below test bed in my lab.
Explanation of my test bed :
(voicereceiver/background receiver)-E0-Router-
E1-(Voicegenerator/background generator)
Voice receiver, Background receiver and router 1�s EO interface forms one
Ethernet segment.
(Actually I am using three routers. But for easy debugging presently I am
working with one router)
Router 1�s E1 interface, Voice generator and background traffic generator
form other Ethernet LAN.
I am limiting bandwidth of router E0 interface to 48kbps by below commands:
***********
I am sniffing at the interface E0 using Ethereal sniffer-protocol analyzer.
But I am unable to get better results for voice application over background
traffic. For both Testing without QoS and with QoS I am getting the same
results.
FOR EVERY VOICE PACKET I GET ONE BACKGROUND PACKET- SAME RESULTS FOR BOTH
WITH AND WITHOUT QOS DEPLOYED
***********
The voice application is generating at 32 kbps with packet size frame size
of 876 bytes.
It uses UDP port no 60600. It uses TCP port# 8896 for connection activeness.
I am using these details in my QoS configurations.
For initial testing, I am also generating background traffic also with
32kbps rate and frame size of 876 bytes.
Since total net traffic voice + background = 32 + 32 = 64 Kbps, so I am
reducing the bandwidth of the interface using �traffic shape� and
�rate-limit� commands.
Router 1:
Option 1:
Conf t
int e 0
rate-limit output 48000 6000 6000 conform-action transmit exceed-action drop
Option 2:
Conf t
int e 0
traffic-shape rate 48000 6000 6000 1000
I think with the above configuration, all traffic above 48000 bps are
dropped.
So there are good chances that 24000 bps of both voice and data are sent,
and remaining s 8000bps for both voice and background are dropped. So,
therefore QoS does not come into picture because now total traffic is 48 but
NOW actual interface bandwidth is 10 Mbps after the �rate-limit� or
�traffic-shape� phase.
IS THERE OTHER WAY TO REDUCE THE BANDWIDTH OF THE ETHERnet
InTERFACE.?
My router configs for Priority queuing and class based weighted fair queuing
My Full router configuration:
Policy : Priority Queuing
ONE#show run
Building configuration...
Current configuration : 1279 bytes
!
hostname ONE
!
enable password cisco
!
ip subnet-zero
no ip domain-lookup
!
!
!
!
!
interface Ethernet0
ip address 10.0.0.2 255.255.255.0
rate-limit output 48000 6000 6000 conform-action transmit exceed-action drop
priority-group 1
!
interface Ethernet1
ip address 10.10.0.1 255.255.255.0
!
!
ip classless
ip route 10.20.0.0 255.255.255.0 10.10.0.2
ip route 10.30.0.0 255.255.255.0 10.10.0.2
no ip http server
ip pim bidir-enable
!
priority-list 1 protocol ip high tcp 8896
priority-list 1 protocol ip high udp 60600
no cdp run
!
!
line con 0
escape-character BREAK
line aux 0
line vty 0 4
no login
!
end
+++++++++++
CLASS BASED WEIGTED FAIR QUEUING
ONE#show run
Building configuration...
Current configuration : 1279 bytes
!
hostname ONE
!
enable password cisco
!
ip subnet-zero
no ip domain-lookup
!
!
class-map match-all voice
match access-group 101
!
!
policy-map catalyst
class voice
priority 36
class class-default
fair-queue 16
!
!
!
!
interface Ethernet0
ip address 10.0.0.2 255.255.255.0
rate-limit output 48000 6000 6000 conform-action transmit exceed-action drop
service-policy output catalyst
!
interface Ethernet1
ip address 10.10.0.1 255.255.255.0
!
interface Serial0
ip address 10.10.10.10 255.255.255.0
!
interface Serial1
ip address 22.22.22.22 255.0.0.0
!
ip classless
ip route 10.20.0.0 255.255.255.0 10.10.0.2
ip route 10.30.0.0 255.255.255.0 10.10.0.2
no ip http server
ip pim bidir-enable
!
access-list 101 permit udp any any eq 60600
access-list 101 permit tcp any any eq 8896
no cdp run
!
!
line con 0
escape-character BREAK
line aux 0
line vty 0 4
no login
!
end
++++
Please explain me possible changes in my config/testbed and any suggestion.
Thanks in Advance,
Vijay
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=74036&t=74036
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