Using Templates To Configure Tcam Region Sizes - Cisco Nexus 9000 Series Configuration Manual

Using Templates to Configure TCAM Region Sizes

• Statistics are disabled when the optional no-stats keyword is used and policies are shared (where
• Egress QoS policies on ALE uplink ports on top-of-rack (TOR) platforms are not supported.
• The egress QoS policy supports marking, policing, and classification.
• Egress qos policies do not support packet-length based matching.
• The set qos-group command is not supported for egress QoS policies.
• Depending on the policy-map match criteria, the relevant egress QoS TCAM regions, such as e-qos,
• Set the egress QoS TCAM region size to 0 before downgrading to earlier images. Remove all egress
DETAILED STEPS
Command or Action
Step 1
hardware access-list tcam region e-racl
tcam-size
Step 2 hardware access-list tcam region [e-qos |
e-qos-lite | e-ipv6-qos | e-mac-qos | | ]
tcam-size
Using Templates to Configure TCAM Region Sizes
Beginning with Cisco NX-OS Release 7.0(3)I3(1), you can use create and apply custom templates to configure
TCAM region sizes.
Once you apply a TCAM template, the hardware access-list tcam region command will not work. You
Note
must uncommit the template in order to use the command.
Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide, Release 7.x
50
applicable).
Egress classification for egress packet scheduling is supported only on 100G platforms.
Note
However, the set qos-group command is supported for egress QoS policies when applied on a 100G
interface.
e-mac-qos, e-ipv6-qos, , and , must be carved for end-to-end QoS within the device.
QoS policies before downgrading to earlier images.
Purpose
To enable carving your QoS (IPv4) TCAM region, specify the e-racl
region to free up resources. Also specify the reduced TCAM size for
the e-racl region.
Carve the new QoS (IPv4) TCAM region including the TCAM size
(number of double wide entries)
All egress QoS (IPv4) TCAM regions are double wide, except
Note
for the e-qos-lite region which is single wide.
Configuring QoS TCAM Carving