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Cisco LAN QoS

I am deploying a non-cisco phone solution on a cisco switching infrastructure.

The deployment will be LOCAL network (LAN) only.

The voice traffic can / will traverse several layer-3 switches between end-user and call manager.

Traffic will transfer from a phone vlan to a voip server vlan.

I am looking for a basic QoS config example that would handle this scenario.

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c-h-r-i-s-t-o-p-h
Asked:
c-h-r-i-s-t-o-p-h
1 Solution
 
Craig BeckCommented:
I would expect AutoQoS to handle this, regardless of vendor.  As long as the phone can mark traffic it should be fine.
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c-h-r-i-s-t-o-p-hAuthor Commented:
If the phones do not handle marking, how can this be accomplished?
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SouljaCommented:
You could mark the traffic at the interface level. i.e

interface type x/x
mls qos cos 7

Now the traffic will be marked.
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SouljaCommented:
You could also do create a policy on the phone vlan interface:

access-list 100 permit ip x.x.x.x 255.255.255.0

class-map phone
  match access-group 100
policy-map voice
 class phone
  set ip dscp EF

interface vlan x
service-policy input voice
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SouljaCommented:
sorry for the typo:

access-list 100 permit ip x.x.x.x 0.0.0.255 any
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c-h-r-i-s-t-o-p-hAuthor Commented:
As I understand it, the traffic only needs to be marked at the edge of the network.

From there, the qos marked traffic passes across normally configured trunk links back to the "Interface Vlan ###" on the router... at which place, a service policy applies dscp ef to the traffic.


I had assumed that some sort of config would need to be placed on the uplink / trunk ports between the edge switches and the core routers. Is this incorrect?
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EyeNoVoIPCommented:
you are correct.  You want to mark as close to the source as possible.  Then use mls qos trust dscp on all uplink/trunk ports.  you can also run auto qos trust voip on these links as well.

how does that sound?
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