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06-04-2009 03:01 PM
06-04-2009 03:01 PM
Qos on WAN
Hi All,
Just wanted to have your inputs if following will be correct configuration to implement end to end Qos thru service provider WAN circuit.
Telco has their WAN circuits set to give top priority to dscp 46 marked voice packets and second highest to dscp 34 marked signaling packets thru their network.
On our edge switches (2610), I have following:
Qos-passthrough-mode typical
qos dscp-map 101110 priority 6
qos dscp-map 100010 priority 4
qos type-of-service diff-services
vlan 10
name voice
qos dscp 101110
no ip address
voice
tag 1-24,trk1
exit
trunk 25-26 trk1 trunk
On downlink core 5406 switch, I have following:
qos dscp-map 101110 priority 6
qos dscp-map 100010 priority 4
qos type-of-service diff-services
vlan 10
name voice
qos dscp 101110
ip address 192.168.10.1/24
voice
tag trk1-trk4
exit
trunk a1-a2 trk1 trunk
interface C1 name "WAN MPLS Router"
interface C1 speed-duplex 100-full
vlan 100
name WAN
untag C1
ip address 192.168.100.1/24
This is my understanding that whatever packet comes in from phone port, irrespective of its dscp or cos setting, above configuration will rewrite it to dscp 46 for voice and pass as such the signaling packets (coming in as dscp 34) and then assign them 802.1p priority as per my dscp-map statements. These will be carried thru tagged uplinks and then at WAN router interface, these packets will carry dscp 46 and dscp 34 code points and then WAN circuit will prioritize them accordingly and then branch office (has 2610 only, with same qos configuration as main office 2610)will receive priortized voice and signaling (do not expect any congestion within branch though) and priortize this thru switch.
Anything that I may have missed before these WAN circuits are implemented in July?
Thank you all for your help.
Just wanted to have your inputs if following will be correct configuration to implement end to end Qos thru service provider WAN circuit.
Telco has their WAN circuits set to give top priority to dscp 46 marked voice packets and second highest to dscp 34 marked signaling packets thru their network.
On our edge switches (2610), I have following:
Qos-passthrough-mode typical
qos dscp-map 101110 priority 6
qos dscp-map 100010 priority 4
qos type-of-service diff-services
vlan 10
name voice
qos dscp 101110
no ip address
voice
tag 1-24,trk1
exit
trunk 25-26 trk1 trunk
On downlink core 5406 switch, I have following:
qos dscp-map 101110 priority 6
qos dscp-map 100010 priority 4
qos type-of-service diff-services
vlan 10
name voice
qos dscp 101110
ip address 192.168.10.1/24
voice
tag trk1-trk4
exit
trunk a1-a2 trk1 trunk
interface C1 name "WAN MPLS Router"
interface C1 speed-duplex 100-full
vlan 100
name WAN
untag C1
ip address 192.168.100.1/24
This is my understanding that whatever packet comes in from phone port, irrespective of its dscp or cos setting, above configuration will rewrite it to dscp 46 for voice and pass as such the signaling packets (coming in as dscp 34) and then assign them 802.1p priority as per my dscp-map statements. These will be carried thru tagged uplinks and then at WAN router interface, these packets will carry dscp 46 and dscp 34 code points and then WAN circuit will prioritize them accordingly and then branch office (has 2610 only, with same qos configuration as main office 2610)will receive priortized voice and signaling (do not expect any congestion within branch though) and priortize this thru switch.
Anything that I may have missed before these WAN circuits are implemented in July?
Thank you all for your help.
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