04-21-2011 01:33 PM - edited 03-04-2019 12:09 PM
Hello,
I'm replacing a 2960g with a 2960s and would like to verifiy that QoS, VTP, Etherchannel and the general config is configured correctly. I copied the QoS config lines from one of our 3560 switches(See attached) which has Mitel IP phones connected and working fine. Will QoS work correctly on the 2960s?
I also had troubles with command "switchport trunk encapsulation dot1q" which I also copied from one of the 3560's. Setting the port to "switchport trunk" is not a problem, but the command would fail at "encapsulation dot1q". Is there something that I'm missing or is this new to the 2960s? Is "encapsulation dot1q" not necessary, or is there a better way to configure the voice ports?
2960s
interface GigabitEthernet1/0/1
switchport voice vlan 2
priority-queue out
mls qos trust cos
spanning-tree portfast
3560
interface FastEthernet0/1
switchport trunk encapsulation dot1q
switchport voice vlan 2
priority-queue out
mls qos trust cos
spanning-tree portfast
If someone could verify that when I take out the 2960g and put in the 2960s that everything will work, I would appreciate it.
All configs are attached.
Let me know if you need more explanation.
Thanks.
04-21-2011 02:12 PM
The 2960 series ONLY supports dot1q, that is why the command to enable it is not supported (its the only optionJ) In other words ISL isn’t supported.
04-21-2011 02:17 PM
Do I need to specifiy another command so the port will know that it's a trunk and the IP phones will connect to the proper vlan?
Would "switchport mode trunk" work, or is there a better command?
04-21-2011 02:36 PM
You can trunk the interface (hence the whole discussion of dot1q) but before we get into it, I am familiar with Cisco phones, so I’m not going to go into a long winded explanation of the options for Cisco phones. Here is a Shoretel best practice doc when you using Cisco switches with Shoretel gear. I would assume this would be your best bet.
Sorry i responed so quickly I didnt see the Shortel part at first.
Hope this helps J
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