Hi, Our ISP provides us with IP video conferencing using their MPLS network. I'm trying to set video priority on the switches but I'm not sure it's correct as I see a lot of packet drops on the video equipment and the quality is poor. Can you please confirm the config is correct on the related switches? The IP Video equipment do tag the packets with Diffserv34.
I believe I have configured the switches to trust DSCP and to map Diffserv34 to Cos queue 6 which I suppose is the highest priority. And also specified that if traffic on the related port is not receiving packets tagged with Diffserv34 then it should mark them and set the Cos queue 6.
PC6224-1
#show ru
!Current Configuration:
!System Description "PowerConnect 6224, 3.3.8.2, VxWorks 6.5"
!System Software Version 3.3.8.2
!Cut-through mode is configured as disabled
!
configure
vlan database
vlan 10,15,100,1021
vlan routing 15 2
vlan routing 100 3
vlan routing 10 14
vlan routing 1021 15
exit
stack
member 1 1
exit
ip address none
class-map match-all videoconf ipv4
match srcip 172.16.21.0 255.255.255.0
class-map match-all diffserv34 ipv4
!match ip dscp 34(af41)
match ip dscp 34
policy-map poli_videoconf in
class diffserv34
assign-queue 6
class videoconf
assign-queue 6
mark ip-dscp 34
exit
ip routing
ip route 0.0.0.0 0.0.0.0 192.168.100.1
ip helper-address 192.168.0.5
interface vlan 10
routing
ip address 192.168.0.2 255.255.255.0
exit
interface vlan 15
routing
ip address 192.168.15.1 255.255.255.0
exit
interface vlan 100
routing
ip address 192.168.100.2 255.255.255.0
exit
interface vlan 1021
bridge multicast forbidden forward-unregistered
routing
ip igmp
exit
spanning-tree priority 0
bridge multicast filtering
classofservice trust ip-dscp
classofservice ip-dscp-mapping 34 6
cos-queue strict 6
!
interface ethernet 1/g1
switchport access vlan 100
exit
!
interface ethernet 1/g2
switchport access vlan 10
exit
!
interface ethernet 1/g20
service-policy in poli_videoconf
switchport access vlan 1021
exit
interface ethernet 1/g23
service-policy in poli_videoconf
switchport mode trunk
switchport trunk allowed vlan add 10,15,1021
!
interface ethernet 1/xg4
service-policy in poli_videoconf
switchport mode trunk
switchport trunk allowed vlan add 10,15,1021
exit
exit
PC6224-2
#show ru
!Current Configuration:
!System Description "PowerConnect 6224, 3.3.8.2, VxWorks 6.5"
!System Software Version 3.3.8.2
!Cut-through mode is configured as disabled
!
configure
vlan database
vlan 10,15,1021
vlan routing 10 1
exit
stack
member 1 1
exit
ip address none
class-map match-all videoconf ipv4
match srcip 172.16.21.0 255.255.255.0
class-map match-all diffserv34 ipv4
!match ip dscp 34(af41)
match ip dscp 34
policy-map poli_videoconf in
class videoconf
assign-queue 6
mark ip-dscp 34
class diffserv34
assign-queue 6
ip routing
interface vlan 10
routing
ip address 192.168.0.3 255.255.255.0
exit
spanning-tree priority 28672
classofservice ip-dscp-mapping 34 6
!
interface ethernet 1/g18
switchport access vlan 15
exit
!
interface ethernet 1/g19
switchport access vlan 15
exit
!
interface ethernet 1/g20
service-policy in poli_videoconf
classofservice trust ip-dscp
classofservice dot1p-mapping 5 5
switchport access vlan 1021
exit
!
interface ethernet 1/xg4
service-policy in poli_videoconf
description "Trunk_to_Serverrum_Plan6"
switchport mode trunk
switchport trunk allowed vlan add 10,15,1021
exit
exit
PC5548
LabKK1-PL3# sh ru
bridge multicast filtering
vlan database
vlan 10,15,1021
exit
voice vlan oui-table add 000181 Nortel__________________
voice vlan oui-table add 0001e3 Siemens_AG_phone________
voice vlan oui-table add 00036b Cisco_phone_____________
voice vlan oui-table add 00096e Avaya___________________
voice vlan oui-table add 000fe2 H3C_Aolynk______________
voice vlan oui-table add 001049 Shoretel________________
voice vlan oui-table add 0060b9 Philips_and_NEC_AG_phone
voice vlan oui-table add 00907a Polycom/Veritel_phone___
voice vlan oui-table add 00e0bb 3Com_phone______________
iscsi target port 860 address 0.0.0.0
iscsi target port 3260 address 0.0.0.0
iscsi target port 9876 address 0.0.0.0
iscsi target port 20002 address 0.0.0.0
iscsi target port 20003 address 0.0.0.0
iscsi target port 25555 address 0.0.0.0
qos advanced
qos map dscp-queue 34 to 6
qos wrr-queue wrtd
ip access-list extended video
permit ipinip 172.16.21.0 0.0.0.255 172.16.21.0 0.0.0.255 dscp 34
permit ip any any
class-map DiffServ34 match-any
match access-group video
policy-map DiffServ34
class DiffServ34
trust cos-dscp
interface vlan 10
ip address 192.168.0.31 255.255.255.0
!
interface gigabitethernet1/0/18
switchport access vlan 15
!
interface gigabitethernet1/0/19
switchport access vlan 15
!
interface gigabitethernet1/0/20
qos cos 6
service-policy input DiffServ34
switchport access vlan 1021
!
interface tengigabitethernet1/0/2
service-policy input DiffServ34
switchport mode trunk
!
SW version 4.1.0.15 (date 20-Oct-2013 time 10:23:39)
Gigabit Ethernet Ports
=============================
no shutdown
speed 1000
duplex full
negotiation
flow-control on
mdix auto
no back-pressure
interface vlan 1
interface port-channel 1 - 32
spanning-tree
spanning-tree mode RSTP
qos basic
qos trust cos
eee enable