Enabling Fex Qos (Ipv4) - Cisco Nexus 9000 Series Configuration Manual

Enabling FEX QoS (IPv4)

Command or Action
Step 2 hardware access-list tcam region region
tcam-size
This example sets the VLAN QoS (IPv4) TCAM size to 256. A VLAN QoS (IPv4) of size 256 takes 512
entries because QoS TCAM is double wide.
• Reduce the ingress Port QoS (IPv4) by 256 bytes (QoS features are double wide, 2 x 256 = 512) and
Enabling FEX QoS (IPv4)
To enable FEX QoS (IPv4), you must decrease the TCAM size of another region and then increase the TCAM
size to enable the new FEX QoS (IPv4) region.
Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide, Release 7.x
48
Purpose
Carve the new VLAN QoS (IPv4) TCAM region including the TCAM size
(number of double wide entries).
add an ingress VLAN QoS (IPv4) with 256 (2 x 256).
switch(config)# hardware access-list tcam region qos 0
Warning: Please reload the linecard for the configuration to take effect
switch(config)# hardware access-list tcam region vqos 256
Warning: Please reload the linecard for the configuration to take effect
Table 22: Updated TCAM Region Configuration After Reducing the IPv4 Port QoS Ingress
Region Name Size
PACL (IPV4) 512
Port QoS (IPV4) 0
VLAN QoS(IPV4) 256
VACL (IPV4) 512
RACL(IPV4) 512
System 256
COPP 256
Redirect 512
SPAN 256
VPC Converg 256
Configuring QoS TCAM Carving
Width Total Size
1 512
2 0
2 512
1 512
1 512
2 512
2 512
1 512
1 256
1 256
4K