Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

How to setup QOS on WAN inbound interface

HI all

I have found a lot of discussion on how to setup QOS/auto QOS on the router for outbound traffic, but no many for inbound traffic. does it required if yes how to setup them up? 

Let's say we have QOS SLA with WAN carrier and voice packet with dscp marketing ef  is forward to our CE router interface fa0/1.

On the CE router I will create following policy-map:

)# policy-map          VOIP-QOS-POLICY-IN

)# class VOIP-RTP

)#priority 90

)# class VOIP-CONTROL

)# bandwidth 30

)# class class-default

)# fair-queue

)# int fa0/1

)# service-policy input VOIP-QOS-POLICY-IN

Basically I want to prioritize the RTP stream when it reach to CE Wan interface and does above approach meet my goal?

Thanks in advance  Roy

  • IP Telephony
4 REPLIES
Hall of Fame Super Silver

How to setup QOS on WAN inbound interface

You do not apply and policy on the ingress side, only egress side to WAN. The only reason you would want to apply somethign on ingress side is if you need to remark any packets.

HTH,

Chris

Hall of Fame Super Gold

Re: How to setup QOS on WAN inbound interface

Furthermore to Chris comment, sInce your CE interface is a LAN, it will never experience congestion, so there is no need to apply any QoS on it.

New Member

How to setup QOS on WAN inbound interface

HI guys

the interface fa0/1 is just example, we used ATM, E1 and FR etc. here I just try to simplify sinario.

OK, back to Chris comment, if there is no need to prioritize on the ingress buffer, how router know to treat the RTP stream differently from other default class traffic? 

Hall of Fame Super Silver

How to setup QOS on WAN inbound interface

It doesn't, it's FIFO and you cannot control how the packets arrive to you, that's the PE router's job.

Chris

682
Views
0
Helpful
4
Replies