Reference Guide

Virtual Routing and Forwarding (VRF) | 1029
CAM Profiles
Layer 3 CAM resources are shared among all VRF instances. To ensure that each VRF instance has
sufficient CAM space:
• On an E-Series Terascale platform, use the
cam-profile ipv4-vrf or cam-profile ipv4-v6-vrf command
and reload the system command to activate the VRF CAM profile for IPv4 or IPv6.
• On an E-Series Exascale platform, use the
cam-profile command to set the CAM size. Then select and
enable VRF microcode for use with the VRF CAM-profile template, and reload the system to activate
the profile. You can set the CAM size to 40M (default) which supports both IPv4 and IPv6 or 10M
which supports only IPv4.
Table 59-2, "IPv4-VRF CAM Profile (Single CAM card)," in Virtual Routing and Forwarding (VRF) and
Table 59-3, "IPv4-v6-VRF CAM Profiles (Single CAM card)," in Virtual Routing and Forwarding (VRF)
each show the required CAM settings for IPv4 and IPv6.
Note: Any physical (port or port channel) or VLAN interface assigned to a VRF uses two CAM entries
instead of one for each route and host entry.
Note: VRF is supported in single CAM cards only.
Table 59-2. IPv4-VRF CAM Profile (Single CAM card)
CAM Profile Table Allocation (K)
L2FIB 32K
L2ACL 3K
IPv4FIB 160K
IPv4ACL 2K
IPv4Flow 12K
EgL2ACL 1K
EgIPv4ACL 12K
Reserved 2K
IPv6FIB 0K
IPv6ACL 0K
IPv6Flow 0K
EgIPv6ACL 0K
Note: When configuring the IPv6 CAM profile, the CAM tables that are carved within l2acl and ipv4Flow
tables remain at default values. For more information on the CAM and CAM profiling, refer to the Content
Addressable Memory chapter.