Hi All
I am trying to configure my 3750 switch for VoIP, Video Conferencing and Data
I have two scenarios to do this. Scenario A remaps cos-dscp and uses Policy Maps.
Scenarion B uses queues
The flow of traffic for Voice, Video and data is as follows
3750 <-- 1Gi--> 6500 <--100Mb--> 7200 <--WAN T3--> 7200 <-- 100Mb--> 6500 <--1Gi--> 3750
My question is which the preferred method for configuring Qos on the 3750. Scenario A seems to adopt the Keep it simple rule but is it the most effective.
Your feedback on this would be appreciated
SCENARIO A
==========
mls qos map cos-dscp 0 8 16 24 34 46 48 56
mls qos
!
!
!
class-map match-all VOICEVLAN
match access-group name Voice
!
Class-map match-all VIDEOVLAN
match access-group name Video
!
class-map match-any Call-Setup
match ip dscp cs3
match ip dscp af31
!
policy-map Voice-Policy
class VOICEVLAN
set dscp ef
trust dscp
class VIDEOVLAN
set dscp af41
class class-default
fair-queue
!
ip access-list extended Voice
permit ip 10.1.131.0 0.0.0.255 any
!
ip access-list extended Video
permit ip 10.1.132.129 0.0.0.127 any
!
interface GigabitEthernet1/0/46
service-policy input Voice-Policy
!
SCENARIO B
==========
mls qos srr-queue output cos-map queue 1 threshold 3 5
mls qos srr-queue output cos-map queue 2 threshold 1 2 4
mls qos srr-queue output cos-map queue 2 threshold 2 3
mls qos srr-queue output cos-map queue 2 threshold 3 6 7
mls qos srr-queue output cos-map queue 3 threshold 3 0
mls qos srr-queue output cos-map queue 4 threshold 3 1
mls qos srr-queue output dscp-map queue 1 threshold 3 46
mls qos srr-queue output dscp-map queue 2 threshold 1 16
mls qos srr-queue output dscp-map queue 2 threshold 1 18 20 22
mls qos srr-queue output dscp-map queue 2 threshold 1 25
mls qos srr-queue output dscp-map queue 2 threshold 1 34
mls qos srr-queue output dscp-map queue 2 threshold 1 34 36 38
mls qos srr-queue output dscp-map queue 2 threshold 2 24 26
mls qos srr-queue output dscp-map queue 2 threshold 3 48 56
mls qos srr-queue output dscp-map queue 3 threshold 3 0
mls qos srr-queue output dscp-map queue 4 threshold 1 8
mls qos srr-queue output dscp-map queue 4 threshold 3 10 12 14
mls qos queue-set output 1 threshold 2 70 80 100 100
mls qos queue-set output 1 threshold 4 40 100 100 100
!
interface GigabitEthernet1/0/46
queue-set 1
srr-queue bandwidth share 1 70 25 5
srr-queue bandwidth shape 3 0 0 0
priority-queue out
!