Service Manual

• Use the eg-default CAM prole in a chassis that has only EG Series line cards. If this prole is used in a chassis with non-EG line
cards, the non-EG line cards enter a problem state.
• Before moving a card to a new chassis, change the CAM prole on a card to match the new system prole.
• After installing a secondary RPM into a chassis, copy the running-conguration to the startup-conguration.
• Change to the default prole if downgrading to a Dell Networking OS version earlier than 6.3.1.1.
• Use the CONFIGURATION mode commands so that the prole is change throughout the system.
• Use the EXEC Privilege mode commands to match the prole of a component to the prole of the target system.
QoS CAM Region Limitation
To store QoS service policies, the default CAM prole allocates a partition within the IPv4Flow region.
If the QoS CAM space is exceeded, a message similar to the following displays.
%EX2YD:12 %DIFFSERV-2-DSA_QOS_CAM_INSTALL_FAILED: Not enough space in L3
Cam(PolicyQos) for class 2 (Gi 12/20) entries on portpipe 1 for linecard 12
%EX2YD:12 %DIFFSERV-2-
DSA_QOS_CAM_INSTALL_FAILED: Not enough space in L3 Cam(PolicyQos) for class 5 (Gi 12/
22) entries on portpipe 1 for linecard 12
If you exceed the QoS CAM space, follow these steps.
1. Verify that you have congured a CAM prole that allocates 24 K entries to the IPv4 system ow region.
2. Allocate more entries in the IPv4Flow region to QoS.
Dell Networking OS supports the ability to view the actual CAM usage before applying a service-policy. The test cam-usage
service-policy command provides this test framework. For more information, refer to Pre-Calculating Available QoS CAM
Space.
Content Addressable Memory (CAM)
225