Reference Guide

872 | Layer 2
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mac cam fib-partition
e
Reapportion the amount of Content Addressable Memory (CAM) available for MAC address learning
(FIB) versus the amount available for MAC ACLs on a line card.
Syntax
mac cam fib-partition {25 | 50 | 75 | 100} slot-number
To return to the default setting, enter no mac cam fib-partition.
Parameters
Defaults
75 (75% of the MAC CAM for MAC address learning)
Command Modes
CONFIGURATION
Usage
Information
After setting the CAM partition size, the line card resets.
Related
Commands
mac learning-limit
c e s
Limit the maximum number of MAC addresses (static + dynamic) learned on a selected interface. .
Syntax
mac learning-limit address_limit [vlan vlan-id] [dynamic] [no-station-move |
station-move] [sticky]
Parameters
25 Enter the keyword 25 to set aside 25% of the CAM for MAC address learning.
50 Enter the keyword 50 to set aside 50% of the CAM for MAC address learning.
75 Enter the keyword 75 to set aside 75% of the CAM for MAC address learning.
100 Enter the keyword 100 to set aside 100% of the MAC CAM for MAC address
learning.
With this configuration, no MAC ACLs are processed.
slot-number
Enter the line card slot number.
Range: 0 to 13 for the E1200
0 to 6 for the E600
0 to 5 for the E300
show mac cam Display the current MAC CAM partition values.
Note: Sticky MAC is not supported on the S25 or S50 in FTOS release 8.4.2.6.
address_limit
Enter the maximum number of MAC addresses that can be learned on the
interface.
Range: 1 to 1000000
vlan vlan-id
E-Series only: Enter the keyword followed by the VLAN ID.
Range: 1-4094
dynamic (OPTIONAL) Enter the keyword dynamic to allow aging of MACs even
though a learning limit is configured.
no-station-move (OPTIONAL) Enter the keyword no-station-move to disallow a station
move (associate the learned MAC address with the most recently accessed
port) on learned MAC addresses.