Deployment Guide

Configuring ACL CAM Carving on the S4810,

S4820T, and MXL switch

Dell Networking switches can operate in Hybrid mode, which enables OpenFlow and legacy functionality on the same

switch. By default, access control list content addressable memory (ACL CAM) space is not allocated for OpenFlow. To

enable OpenFlow, reserve CAM space for OpenFlow using the following commands. For more information on CAM, refer

to the

Content Addressable Memory (CAM)

chapter in the

FTOS Configuration Guide

NOTE: The commands to allocate CAM space for OpenFlow on the S4810, S4820T, and MXL switch differ from the

commands used for the Z9000.

1. Enter a value for cam-acl.

Select one of the following values for cam-acl:

– 0 (default): No space is allocated for OpenFlow. Change this value to four or eight to enable OpenFlow.

– 4: Allocates space for up to 242 flow entries (14 entries are reserved for internal purposes from the 256

available flows, leaving 242 entries for use by OpenFlow).

– 8: Allocates space for up to 498 flow entries (14 entries are reserved for internal purposes from the 512

available flows, leaving 498 entries for use by OpenFlow).

The following sample S4810 configuration reserves 512 entries for OpenFlow:

FTOS(conf)#cam-acl l2acl 3 ipv4acl 2 ipv6acl 0 ipv4qos 2 l2qos 2 l2pt 0

ipmacacl 0 vman-qos 0 ecfmacl 0 openflow 4 fcoeacl 0 iscsioptacl 0

2. Enter a value for cam-acl-vlan.

Select one of the following values for cam-acl-vlan:

– 0 (default): No space is allocated for OpenFlow. Change this value to 1 to enable OpenFlow.

– 1: Enables OpenFlow functionality.

The following sample configuration shows a value of 1 for cam-acl-vlan:

FTOS(conf)#cam-acl-vlan vlanopenflow 1 vlaniscsi 1

NOTE: Reboot the switch after changing the cam-acl and cam-vlan-acl values. If you do not reboot the

switch, the configuration changes do not take effect.

To upgrade any configuration changes that have changed the NVRAM content if you enable BMP 3.0, use the

reload conditional nvram-cfg-change command to perform a reload on the chassis.