Cam Partitioning For The Bigiron Rx; Re-Distributing Cam Allocations - Dell PowerConnect B-RX Configuration Manual

5

CAM partitioning for the BigIron RX

To globally disable Layer 2 switching on the device, enter commands such as the following.
BigIron RX(config)# route-only
BigIron RX(config)# exit
BigIron RX# write memory
BigIron RX# reload
To re-enable Layer 2 switching globally, enter the following.
BigIron RX(config)# no route-only
BigIron RX(config)# exit
BigIron RX# write memory
BigIron RX# reload
Syntax: [no] route-only
To disable Layer 2 switching only on a specific interface, go to the Interface configuration level for
that interface, then disable the feature. The following commands show how to disable Layer 2
switching on port 3/2.
BigIron RX(config)# interface ethernet 3/2
BigIron RX(config-if-e10000-3/2)# route-only
Syntax: [no] route-only
To re-enable Layer 2 switching, enter the command with "no".
BigIron RX(config-if-e10000-3/2)# no route-only
CAM partitioning for the BigIron RX
In releases prior to 02.3.00, CAM partitioning was not configurable. Starting in BigIron RX software
release 02.3.00, you can specify the percentage of CAM assigned to each of the CAM entry types
globally. CAM Partitioning is not required on the device. The default CAM allocations are described
in the following.
Resource limitation for BigIron RX hardware: MAC 16K and 512K IPv4 routes and 64K IPv6 routes
simultaneously.
The number of CAM entries available for ACL, PBR, RL: 1024 Default values.
Other Default number of entries available:

Re-distributing CAM allocations

Depending on the needs of you network, the CAM allocations may need to be re-distributed. There
are two steps to the command.
1. Change the allocation used between the rules + PBR/RL and the IPv6 multicast entries.
2. Change the allocation of the ACL rules and the PBR/RL entries.
134
•
ACL – 416
•
Rate Limiting – 416 (Shared with PBR)
•
IPv6 Multicast – 192
BigIron RX Series Configuration Guide
53-1002253-01