02-18-2008 06:03 AM
Dear All,
Hi, I have a cisco 2811 router. I would like to configure QoS for VoIP on that. Can someone guide me with the same?
Attached is the configuration of the router.
Regards
sarfaraz
02-25-2008 10:43 AM
This is what I've done normally for QoS of VOIP. now this is QoS over an MPLS
class-map match-any AF41
match ip dscp af41
match access-group name AF41_VOICE_CONTROL
class-map match-any VOICE
match ip dscp ef
match access-group name EF_SOFTPHONE
match ip precedence 5
!
!
policy-map 50_49
class VOICE
priority percent 50
set ip dscp ef
class AF41
set ip dscp af41
bandwidth percent 49
class class-default
set ip dscp default
fair-queue
ip access-list extended AF41_VOICE_CONTROL
permit tcp any 10.21.192.0 0.0.0.255 eq 2000
permit tcp any 10.21.192.0 0.0.0.255 eq 2428
permit udp any 10.21.192.0 0.0.0.255 eq 2427
permit tcp any 10.21.192.0 0.0.0.255 eq 1720
ip access-list extended EF_SOFTPHONE
permit udp any range 16384 16390 any
For QoS on the LAN, i just noramlly use Auto QoS
02-25-2008 04:30 PM
One caution: using fair queue in the class-default doesn't seem to strictly adhere to keeping the bandwidth settings for other non-LLQ classes on most routers.
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