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New Member

SG300-28P QOS Setup

Hello All.  I tried to setup my SG300-28P similarly to my 2960S but using the following commands:

conf t

int range gi1-28

auto qos voip cisco-phone

But there is no similar command that I can find on the SG300.  Is anyone familiar with a similar command?  Or is QOS a completely manual process on the SG300 ?

I am on firmware version 1.3.7.18

Everyone's tags (1)
1 ACCEPTED SOLUTION

Accepted Solutions
New Member

Hi Ksuchewie, There is no

Hi Ksuchewie,

 

There is no auto qos in Cisco small business switches.  This feature in catalyst and enterpirce routers only.  Cisco small business switch voice vlan by default use DSCP 46 and CoS 5

This mean DSCP in EF 46 mode

my adivce change DSCP to 26  so this will match AF31 low drops.  Also I will leave CoS in 5 as well.

I will give you example how to config qos voice vlan in small business siwtch

my example is DATA vlan 1  and voice vlan is 100

quick command

config t

voice vlan id 100

voice vlan cos 5

voice vlan dscp 26

wr mem

 

Thanks,

Moh

2 REPLIES
New Member

Hi Ksuchewie, There is no

Hi Ksuchewie,

 

There is no auto qos in Cisco small business switches.  This feature in catalyst and enterpirce routers only.  Cisco small business switch voice vlan by default use DSCP 46 and CoS 5

This mean DSCP in EF 46 mode

my adivce change DSCP to 26  so this will match AF31 low drops.  Also I will leave CoS in 5 as well.

I will give you example how to config qos voice vlan in small business siwtch

my example is DATA vlan 1  and voice vlan is 100

quick command

config t

voice vlan id 100

voice vlan cos 5

voice vlan dscp 26

wr mem

 

Thanks,

Moh

Green

Hi Ksuch. The Small Business

Hi Ksuch. The Small Business switch auto voice VLAN manages the QoS for you. So there is 2 ways this works with minimal or no configuration.

 

#1 the switch employs basic QoS for TAG VLAN packet. This takes the VPT value from within the packet and classifies the traffic.

#2 Auto Voice VLAN will use 46/5 by default. To configure voice VLAN you would make an additional VLAN on the switch then designate it as the voice VLAN  voice vlan id xxx in global configuration mode. The Auto Voice VLAN works off of CDP/LDP advertisement.

-Tom Please mark answered for helpful posts http://blogs.cisco.com/smallbusiness/
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