Users Guide
Starting from OS 9.11(2.0), ACL lters are optimized to support more than 200 egress ACL rules on the S6000, S6000–ON, S6100–ON,
and Z9100–ON.
Example of the show cam-usage Command
CAM Optimization
When you enable the CAM optimization, if a Policy Map containing classication rules (ACL and/or DSCP/ ip-precedence rules) is applied
to more than one physical interface on the same port-pipe, only a single copy of the policy is written (only one FP entry is used). When you
disable this command, the system behaves as described in this chapter.
Troubleshoot CAM Proling
The following section describes CAM proling troubleshooting.
QoS CAM Region Limitation
To store QoS service policies, the default CAM prole 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 (Te 1/20/1) entries on portpipe 1 for linecard 1
%EX2YD:12 %DIFFSERV-2-
DSA_QOS_CAM_INSTALL_FAILED: Not enough space in L3 Cam(PolicyQos) for class 5 (Te 1/
22) entries on portpipe 1 for linecard 1
If you exceed the QoS CAM space, follow these steps.
1 Verify that you have congured a CAM prole 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.
Syslog Error When the Table is Full
In the Dell Networking OS, the table full condition is displayed as CAM full only for LPM. But now the LPM is split into two tables. There are
two syslog errors that are displayed:
1 /65 to /128 Table full.
2 0/0 – 0/64 Table full.
A table-full error message is displayed once the number of entries is crossed the table size. Table-full message is generated only once when
it crosses the threshold. For subsequent addition of entries, the table-full message is not recorded you clear the table-full message. The
table-full message is cleared internally when the number of entries is less than the table size.
Content Addressable Memory (CAM)
221