The QoS functions as we mentioned above are able to enable at the same time. But, the following precedence will decide whether these functions work or not.
1. enable both VIP and TOS
Choose priorities of VIP and TOS.
2. enable both VIP and DSCP
Choose priorities of VIP and DSCP.
3.enable both TOS and DSCP Choose "DSCP".
4.enable both VIP and DSCP
Choose priorities of VIP and DSCP.
5.enable both 802.1p and TOS Choose "TOS".
6.enable both 802.1p and DSCP Choose "DSCP".
7.enable both 802.1p and DSCP and TOS Choose "DSCP".
8.enable both 802.1p and DSCP and TOS and VIP Choose priorities of VIP and DSCP.
**VIP/DSCP > TOS > 802.1p (Final result)
