Deployment Guide

Table Of Contents
%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 configured a CAM profile that allocates 24 K entries to the IPv4 system flow region.
2. Allocate more entries in the IPv4Flow region to QoS.
Dell EMC 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 EMC 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.
Syslog Warning Upon 90 Percent Utilization of CAM
CAM utilization includes both the L3_DEFIP and L3_DEFIP_PAIR_128 table entries to calculate the utilization.
Syslog Warning for Discrepancies Between Configured Extended
Prefixes
An error message is displayed if the number of extended prefix entries is different from the configured value during bootup.
Unified Forwarding Table (UFT) Modes
Unified Forwarding Table (UFT) consolidates the resources of several search tables (Layer 2, Layer 3 Hosts, and Layer 3 Route
[Longest Prefix Match LPM]) into a single flexible resource. Dell EMC Networking OS supports several UFT modes to extract
the forwarding tables, as required. By default, Dell EMC Networking OS initializes the table sizes to UFT mode 2 profile, since it
provides a reasonable shared memory for all the tables. The other supported UFT modes are scaled-l3hosts (UFT mode 3) and
scaled-l3routes (UFT mode 4).
Table 14. UFT Modes Table Size
UFT Mode L2 MAC Table Size L3 Host Table Size L3 LPM Table Size
Default 160K 144K 16K
Scaled-l3-hosts 96K 208K 16K
Scaled-l3-routes 32K 16K 128K
Configuring UFT Modes
To configure the Unified Forwarding Table (UFT) modes, follow these steps.
1. Select a mode to initialize the maximum scalability size for L2 MAC table or L3 Host table or L3 Route table.
CONFIGURATION
Content Addressable Memory (CAM)
225