Cisco QOS for Avaya VOIP

[phonedud]

I have a C3750 Software (C3750-IPBASE-M), Version 12.2(35)SE5 at my Avaya PBX and I need to add basic QOS on this switch, dose anyone have a example of this or where I can get basic QOS for dummies. What happen if I just use auto QOS on the switch?

 

[m4ilm4n]

Here's what I use in my 3560s, not sure if it'll work for you. I'd be interested to read what others use too.

mls qos map dscp-cos  34 to 5
mls qos map cos-dscp 0 8 16 26 32 46 48 56
mls qos srr-queue input bandwidth 90 10
mls qos srr-queue input cos-map queue 1 threshold 2  1
mls qos srr-queue input cos-map queue 1 threshold 3  0
mls qos srr-queue input cos-map queue 2 threshold 1  2
mls qos srr-queue input cos-map queue 2 threshold 2  4 6 7
mls qos srr-queue input cos-map queue 2 threshold 3  3 5
mls qos srr-queue input dscp-map queue 1 threshold 2  9 10 11 12 13 14 15
mls qos srr-queue input dscp-map queue 1 threshold 3  0 1 2 3 4 5 6 7
mls qos srr-queue input dscp-map queue 1 threshold 3  32
mls qos srr-queue input dscp-map queue 2 threshold 1  16 17 18 19 20 21 22 23
mls qos srr-queue input dscp-map queue 2 threshold 2  26 33 34 35 36 37 38 39
mls qos srr-queue input dscp-map queue 2 threshold 2  48 49 50 51 52 53 54 55
mls qos srr-queue input dscp-map queue 2 threshold 2  56 57 58 59 60 61 62 63
mls qos srr-queue input dscp-map queue 2 threshold 3  24 25 27 28 29 30 31 40
mls qos srr-queue input dscp-map queue 2 threshold 3  41 42 43 44 45 46 47
mls qos srr-queue output cos-map queue 1 threshold 3  5
mls qos srr-queue output cos-map queue 2 threshold 3  3 6 7
mls qos srr-queue output cos-map queue 3 threshold 3  2 4
mls qos srr-queue output cos-map queue 4 threshold 2  1
mls qos srr-queue output cos-map queue 4 threshold 3  0
mls qos srr-queue output dscp-map queue 1 threshold 3  40 41 42 43 44 45 46 47
mls qos srr-queue output dscp-map queue 2 threshold 3  24 25 26 27 28 29 30 31
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  16 17 18 19 20 21 22 23
mls qos srr-queue output dscp-map queue 3 threshold 3  32 33 34 35 36 37 38 39
mls qos srr-queue output dscp-map queue 4 threshold 1  8
mls qos srr-queue output dscp-map queue 4 threshold 2  9 10 11 12 13 14 15
mls qos srr-queue output dscp-map queue 4 threshold 3  0 1 2 3 4 5 6 7
mls qos queue-set output 1 buffers 20 20 20 40
mls qos

 

[phonedud]

Do you do anything on the port, or is this judt gobal settings.

 

[unclerico]

for some quick and dirty QoS use the Auto QoS feature. it will at least get you started and if need be you can tweak it as needed after the fact.

I hate all Uppercase... I don't want my groups to seem angry at me all the time! =)
- ColdFlame (vbscript forum)

 

[VinceWhirlwind]

Yes, enable auto-qos and you can say "QoS is enabled" to the managers who have no idea what it means, what it does, or how to test it.

When you have time and you want to see it do something for you, you need to try out the
*show mls qos ...*
commands.

I seem to recall the "auto qos trust cos" not working for me, so I changed it to "auto qos trust dscp" on the interfaces.

If you want to control QoS a bit yourself, you would do something basic like:

1/ Define the traffic:

ip access-list extended special.traffic
permit ip 10.1.2.0 0.255.255.255 any

class-map match-all special
match access-group name special.traffic

2/ Define the policy action:

policy-map Assign.DSCP
class special
set dscp ef

3/ Apply it to an interface:

interface FastEthernet1/0/33
service-policy input Assign.DSCP
auto qos voip trust

Mostly, the voice devices themselves should be configured to put the appropriate DSCP in their tags, but you might decide to do DSCP tagging yourself for special situations.


Oh, and I haven't checked the wikipedia article about QoS recently, but it used to be quite disinformational, so don't use Wikipedia.

 

[phonedud]

Thanks for all the information