Configuration manual

304 | Content Addressable Memory for ExaScale
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Static Random Access Memory
Static Random Access Memory (SRAM) is a rapidly accessed memory that stores information in the form
of a lookup table. On Dell Force10 systems, the SRAM stores multicast forwarding information, MPLS
routing.
Figure 12-1. CAM/SRAM Lookup Tables
CAM-profile templates
Dell Force10 systems partition each CAM/SRAM module so that it stores different types of information.
The size of each partition is specified in the CAM-profile template. The enabled CAM-profile template is
stored on every card, including line cards and the RPMs. The same profile must be on every line card and
RPM in the chassis.
There is a default CAM profile and microcode that is preprogrammed in the system.You can configure
additional CAM profiles using the templates described in this chapter, as well as define your own
CAM-profiles. The provided templates have been qualified by Dell Force10. FTOS also supports creating
individual CAM-profiles, but Dell Force10 does not certify that these templates will function as expected.
Applying different CAM profile templates changes the amount of space availability in each region.
Note: Although these templates are called CAM-profile templates, they do apply to both the CAM and
SRAM lookup tables. There is no need for a separate profile for the SRAM.
C
P
U
eFPTM
iFPTM
CAM
SRAM
L
ine
C
ard
S
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CAM Tables:
L2Fib
L2Acl
Ipv4Fib
Ipv4Acl
Ipv4Flow
EgL2Acl
EgIpv4Acl
Mpls
Ipv6Fib
Ipv6Acl
EgIpv6Acl
EgAcl
Ipv6Flow
SRAM Tables:
EpiIpMcast
EpiEoMpls
Fhop
Nhop
EpiPP
IgMcastFlow