Tcam Carving For Fex Qos - Cisco Nexus 9000 Series Configuration Manual

FEX QoS Configuration
• Output queuing

TCAM Carving for FEX QoS

You must free up unused TCAM space to accommodate TCAM carving for FEX QoS.
Note
FEX QoS is not supported on the Cisco Nexus 9508 switch (NX-OS 7.0(3)F3(3).
• For FEX QoS TCAM carving for IPv4 traffic, you can use the hardware access-list tcam region fex-qos
• For IPv6 QoS TCAM carving support, you can use the hardware access-list tcam region fex-ipv6-qos
• For MAC based QoS TCAM carving support, you can use the hardware access-list tcam region
System Level
Action
Bandwidth
Bandwidth Remaining
Priority
(only level 1 on FEX, 3 levels on
switch)
Interface Level
Action
Bandwidth
Bandwidth Remaining
Priority
256 command.
As a best practice, you can use the hardware access-list tcam region fex-qos-lite 256 command when
policers are not used.
Note
The fex-qos-lite region does not have conformed policer statistics support for
IPv4.
256 command.
fex-mac-qos 256 command.
Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide, Release 7.x
Hardware Implementation
Direction: OUT
FEX
Yes
Yes
Yes
Hardware Implementation
Direction: OUT
FEX
No
No
No
TCAM Carving for FEX QoS
Switch
Yes
Yes
Yes
Switch
Yes
Yes
Yes
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