cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
466
Views
5
Helpful
4
Replies
Highlighted
Beginner

AUTOQOS cisco-phone interrogation

Hi All,

I have now to look at QoS, I find switch already configured with Cisco-Pohne auto QoS configured.

currently the following command are configured on the interface configuration :

Interface fa0/1

sw acc vl 1

switchport mode acces

switchport nonego

switchport voice vlan 2

srr-queue bandwith share 10 10 60 20

priority-queue out

mls qos trust device cisco-phone

mls qos trust cos

auto qos voip cisco-phone

spanning-tree portfast

service-policy input AutoQoS-Police-CiscoPhone


but when I issue the command:

show mls qos int fa0/1 queue (on the same switch)

I got the following output information :

Egress Priority Queue : enable

Shape queue weights (absolute) : 25 0 0 0

Shared queue weight : 10 10 60 20

The port badnwith limit : 100 (operationnal bandwith :100.0)

The port is mapped to qset : 1

I red Shape queue override shared queue configuration on the same interface, I understood here the queue 1 has 25% of bandwith reserved and limit to.  Queue 2 to 4 has no Shape queue configuration so the 75% on the bandwith remain on that interface would be divised between the remain queue.

I the configuration, I did not find any interface command which configured shapping default configuration for all interfaces on the switch.  But I like to understand from where they shapping configuration of the queue 1 is comming from ? their is any default configuration (which is not shown) which can explain this behavior !

I just would like to understand, I'm not very happy to have configured some stuff which I can't explain behavior after fact, when comming time to support them after it would be great to understand those properly.

Thanks everybody !

4 REPLIES 4
Highlighted
Participant

hi Xine,

is your switch configured with auto Qos ?

thanks

Highlighted

Hi !

yes it is like specified in the switch port fa0/1 configuration !

"auto qos voip cisco-phone" macro command under the interface fa0/1.

or maybe I misunderstood your question !

Highlighted

HI ,

look like it the default Behavior of Auto Qos and it reserve some bandwidth for egress queue.

Just checked in my 2960 and its same.

http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_53_se/command/reference/cli2.html#wp1947019

http://networkenhancers.blogspot.co.nz/2011/05/in-previous-versions-of-qos-2.html

hope this helps.

thanks

Highlighted

hi,

check this link its really good and  hopefuly will ans your all questions.

https://supportforums.cisco.com/docs/DOC-8093

please rate if this helps.

thanks

Content for Community-Ad