From: Snow, Tim (timothy.snow@eds.com)
Date: Wed Sep 17 2003 - 02:31:36 GMT-3
Hunt,
In the first example, the "switchport priority extend cos 1" will tell the
phone to override the priority received from the PC to 1
2nd example. Your using the same as example 1 but writing the cos to 0 for
packets from the PC.
Also in example 2, the "mls qos cos" along with the override command will
mark assign the CoS value specified with the mls qos cos command to untagged
frames received on trusted and untrusted ports.
The "switchpotr priority extend trust" By default, the phone will override
frames received from the PC with a priority of 0, using this command will
allow the COS set by the PC to be trusted.
Hope this helps
Tim
-----Original Message-----
From: Hunt Lee [mailto:huntl@webcentral.com.au]
Sent: Wednesday, September 17, 2003 12:04 AM
To: 'ccielab@groupstudy.com'
Subject: What is the difference
Hello,
Please tell me what's the difference...
int fa0/11
switchport voice vlan 101
switchport trunk encapsulation dot1q
switchport priority extend cos 1
no ip address
spanning-tree portfast
OR
interface FastEthernet0/11
switchport voice vlan 101
switchport trunk encapsulation dot1q
switchport priority extend cos 0
no ip address
mls qos cos 1
mls qos cos override
spanning-tree portfast
And what about this pair?
interface FastEthernet0/11
switchport voice vlan 101
switchport trunk encapsulation dot1q
switchport priority extend trust
no ip address
spanning-tree portfast
interface FastEthernet0/11
switchport voice vlan 101
switchport trunk encapsulation dot1q
switchport priority extend trust
no ip address
mls qos cos 1
mls qos trust cos
spanning-tree portfast
THANKS!!!!
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