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LAN configuration for Cisco Jabber

wribeiro2305
Level 1
Level 1

Hi, 

hope someone can help me out with a problem.

We've got a call centre and users have Jabber on their PCs. They've started having some buzzing noise on their calls and random PCs and time. 

Call manager is over a MPLS, this problem doesn't happen to any other site, but any other site is using Jabber, all of them have physical phones.

 I've got an ASA in front of the network connected to the MPLS. Here's what I have on LAN Switches for QoS in all ports.

 

!
mls qos map cos-dscp 0 8 16 24 32 46 48 56
mls qos srr-queue output cos-map queue 1 threshold 3 4 5
mls qos srr-queue output cos-map queue 2 threshold 1 2
mls qos srr-queue output cos-map queue 2 threshold 2 3
mls qos srr-queue output cos-map queue 2 threshold 3 6 7
mls qos srr-queue output cos-map queue 3 threshold 3 0
mls qos srr-queue output cos-map queue 4 threshold 3 1
mls qos srr-queue output dscp-map queue 1 threshold 3 32 33 40 41 42 43 44 45
mls qos srr-queue output dscp-map queue 1 threshold 3 46 47
mls qos srr-queue output dscp-map queue 2 threshold 1 16 17 18 19 20 21 22 23
mls qos srr-queue output dscp-map queue 2 threshold 1 26 27 28 29 30 31 34 35
mls qos srr-queue output dscp-map queue 2 threshold 1 36 37 38 39
mls qos srr-queue output dscp-map queue 2 threshold 2 24
mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53 54 55
mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61 62 63
mls qos srr-queue output dscp-map queue 3 threshold 3 0 1 2 3 4 5 6 7
mls qos srr-queue output dscp-map queue 4 threshold 1 8 9 11 13 15
mls qos srr-queue output dscp-map queue 4 threshold 2 10 12 14
mls qos queue-set output 1 threshold 1 100 100 50 200
mls qos queue-set output 1 threshold 2 125 125 100 400
mls qos queue-set output 1 threshold 3 100 100 100 400
mls qos queue-set output 1 threshold 4 60 150 50 200
mls qos queue-set output 1 buffers 15 25 40 20
mls qos
!

interface GigabitEthernet1/0/2
switchport access vlan 24
switchport mode access
srr-queue bandwidth share 1 30 35 5
priority-queue out
mls qos trust cos
auto qos trust

 

This problem can be on the PCs as they're using Jabber, but I want to make sure I'm missing nothing on LAN. We don't manage their Voice devices.

 

2 Replies 2

Hello,

what LAN switches do you have (e.g. 3750) ? Also, which Jabber client (version) ? For Mac or Windows ?

Can you post the output of 'show mls qos interface GigabitEthernet1/0/2'.

What are your SRR queue settings based on ?

 

 Hi Georg, 

 thx for your reply.

 

 Switch is 2960X Version 15.2(2)E5. I don't really know which Jabber version they're using. All Windowns PCs.

 

The following configuration applies in all ports.

!

show mls qos interface gigabitEthernet 1/0/2
GigabitEthernet1/0/2
trust state: trust cos
trust mode: trust cos
trust enabled flag: ena
COS override: dis
default COS: 0
DSCP Mutation Map: Default DSCP Mutation Map
Trust device: none
qos mode: port-based

!

 

To be honest I don't know what SRR queue were based on, we didn't configure it.