06-24-2011 09:59 PM - edited 03-07-2019 12:58 AM
Hi,
I'm trying to get the following QoS configuration working on a 3550.
I have 2 ports on a switch, say 0/1 is customer facing, and 0/24 is facing a L3 link (non-private) back to our datacenter.
I'd like to use priority queueing on each port and mark the DSCP appropriately for ingress traffic.
I'm trying to use the following classes and policy-maps:
mls qos
class-map match-all cm_voip_signaling
match access-group name voip_signaling
class-map match-all cm_voip_voice
match access-group name voip_voice
!
!
policy-map MARK_VOIP_IN_NET
class cm_voip_voice
set ip dscp ef
class cm_voip_signaling
set ip dscp cs3
class class-default
[police statement]
and on the interfaces:
interface FastEthernet0/1
description TO CUSTOMER
...
wrr-queue bandwidth 10 20 70 1
wrr-queue min-reserve 1 5
wrr-queue min-reserve 2 6
wrr-queue min-reserve 3 7
wrr-queue min-reserve 4 8
wrr-queue cos-map 1 0 1
wrr-queue cos-map 2 2 4
wrr-queue cos-map 3 3 6 7
wrr-queue cos-map 4 5
service-policy input MARK_VOIP_IN_NET
priority-queue out
interface FastEthernet0/24
description TO DATACENTER
...
wrr-queue bandwidth 10 20 70 1
wrr-queue min-reserve 1 5
wrr-queue min-reserve 2 6
wrr-queue min-reserve 3 7
wrr-queue min-reserve 4 8
wrr-queue cos-map 1 0 1
wrr-queue cos-map 2 2 4
wrr-queue cos-map 3 3 6 7
wrr-queue cos-map 4 5
service-policy input MARK_VOIP_IN_NET
priority-queue out
However, if I monitor dscp 24 and 46 of FastEthernet 0/24 I never see any of them on the Egress side, even though I see them being marked
on the Ingress of FE 0/1.
Can anyone explain why this might be?
I do see 24 and 46 on the Egress of FE 0/1.
Thanks.
-- James
06-25-2011 12:10 AM
How do you verify traffic is actually being marked?
From the partial config it looks like you are using an acl to classify traffic.
This acl may be working only in one direction but source and destination are reversed when coming from fa0/1.
This may not be the cause but more info is needed to solve this.
regards,
Leo
06-25-2011 07:19 AM
Well, thank you for making me go look at my access list.
For some reason I had assumed I added both directions, but apparently on this switch I did not...sigh.
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