Brocade MLX Series and Brocade NetIron XMR Diagnostic Guide ...

2TCAM partitioning and usage:Rule ACL: 1984(size), 1984(free), 00.00%(used)[Out Session] 49152(size), 49152(free), 00.00%(used)[Out V6 Session] 4096(size), 4096(free), 00.00%(used)The show cam-partition slot command displays the TCAM information for a specific slot,as shown in the following example.NOTEThe display has been shortened for brevity.Brocade# show cam-partition slot 1Session Section : 655360 (0a0000) - 753663 (0b7fff)IP Source Guard Denial: 0 (000000) - -1 (ffffff)IP Source Guard Permit: 0 (000000) - -1 (ffffff)Rule-based ACL : 675840 (0a5000) - 753663 (0b7fff)Broadcast ACL: 673792 (0a4800) - 675839 (0a4fff)Receive ACL: 671744 (0a4000) - 673791 (0a47ff)IP Multicast: 655360 (0a0000) - 671743 (0a3fff)IP Multicast 1G : 655360 (0a0000) - 655359 (09ffff)IP Multicast 2GM : 655360 (0a0000) - 655359 (09ffff)Configuration notesKeep the following information in mind when you are resetting TCAM partitioning:• Partition TCAMs to best fit the applications that are running on your device.• If you do not select a non-default profile, the default profile will be in effect.• The system must be rebooted for TCAM changes to take effect. Always remember to write tomemory before you reboot your system.• Choose a TCAM profile based on all of the application requirements, not on the maximumavailable TCAM entries for any specific application. The maximum number of entries will varyfor different applications.Maximum TCAM address dependenciesThe Brocade NetIron XMR and Brocade MLX series router can have up to 16,000 static anddynamic MAC address entries stored in the TCAM. The ability of the TCAM to store large numbers ofaddresses depends on the following factors:• The number of source MAC addresses being learned by the TCAM.• The number of destination MAC addresses being forwarded by the TCAM.• The distribution of the MAC address entries across ports. For example, if one port is learning allthe source MAC addresses, the available TCAM for that port will be used up. In addition, a largenumber of MAC address entries in the MAC table could increase CPU use.Supernet TCAM partition sharingIn Multi-Service IronWare software versions prior to 03.2.00, TCAM resources could not be sharedbetween the 32 levels of the IP Forwarding Information Base (FIB). Beginning with 03.2.00, TCAMallocation is optimized for dynamic allocation of resources to each level. If one level runs out ofTCAM resources, it can obtain resources that have been allocated to another level but are unused.This feature applies to IPv4 and Layer 3 VPN routes.16 Brocade MLX Series and Brocade NetIron XMR Diagnostic Guide53-1002426-02