I use low bit rate satellite channel with 200kbps in downstream and 70kbps in upstream.
network: LAN<->(Eth)Cisco(Eth)<->SatModem<---200/70kbps--->SatModem<->Ethernet Switch<->VoIP Gateway & PC
What kind of policy I have to use on Cisco to give the maximum priority to voice and minimum priority to data ? I tried to use CBWFQ but the voice quality was decrease then the data starts at maximum speed. Now i use rate-limit, voice quality is normal but the data speed is jumping from minimum to maximum (due to of rate-limit i think).
Here is my CBWFQ config:
class-map match-all VOICE_BACK
match access-group 101
class-map match-all VOICE
match access-group 100
ip address 192.168.89.1 255.255.255.192
service-policy output VOICE
ip address 192.168.76.3 255.255.255.0
service-policy output VOICE_BACK
ip route 0.0.0.0 0.0.0.0 192.168.76.1
no ip http server
no ip http secure-server
access-list 100 permit udp any host 192.168.89.4
access-list 101 permit udp host 192.168.89.4 any
access-list 102 permit ip any 192.168.89.0 0.0.0.63
access-list 103 permit ip host 192.168.11.206 host 192.168.89.4
So please give me an advice what kind of policy I have to use.
I've seen this problem as well. Every case is different based on the type of traffic, in our case by lowering the queue-limit on the bursty data traffic we were able to resolve it. This will cause data traffic to be dropped more aggressively and impede it's ability to develop high throughput flows.
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