Cisco Nexus 9000 Series Configuration Manual page 60

Enabling Layer 3 QoS (IPv6)
Region Name
DETAILED STEPS
Command or Action
Step 1 hardware access-list tcam region region
tcam-size
Step 2
hardware access-list tcam region region
tcam-size
This example sets the ingress Layer 3 QoS (IPv6) TCAM region size to 256. A Layer 3 QoS (IPv6) of size
256 takes 512 entries because IPv6 is double wide.
• Reduce the span and redirect regions to 0. This creates 512 entry spaces that are used to carve Layer 3
switch(config)# hardware access-list tcam region redirect 0
Warning: Please reload the linecard for the configuration to take effect
Warning: BFD, DHCPv4 and DHCPv6 features will NOT be supported after this configuration
change.
switch(config)# hardware access-list tcam region span 0
Warning: Please reload the linecard for the configuration to take effect
switch(config)# hardware access-list tcam region ipv6-l3qos 256
Warning: Please reload the linecard for the configuration to take effect
Table 20: Updated TCAM Region Configuration After Reducing the IPv4 RACL (Ingress)
Region Name
IPv4 RACL
Layer 3 QoS (IPv6)
Layer 3 QoS (IPv4)
CoPP
System
Redirect
SPAN
Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide, Release 7.x
46
Size
Purpose
To enable carving your Layer 3 QoS (IPv6) TCAM region, specify another
region to free up resources. Also specify the reduced TCAM size for the
region.
Note
Carve the new Layer 3 QoS (IPv6) TCAM region including the TCAM size
(number of double wide entries).
QoS (IPV6) with 256 entries (double wide).
Size
1536
256
256
256
256
0
0
Width
Repeat this step for as many regions as necessary to free up sufficient
resources to carve the new Layer 3 QoS (IPv6) TCAM region.
Width
1
2
2
2
2
1
1
Configuring QoS TCAM Carving
Total Size
4096
Total Size
1536
512
512
512
512
0
0