Owner's Manual

44 Installing and Setting Up CMC
Setting Up Initial Access to CMC
To manage CMC remotely, connect CMC to your management network and
then configure CMC network settings.
NOTE: To manage the M1000e solution, it must be connected to your management
network.
For information on how to configure CMC network settings, see "Configuring
CMC Network" on page 45. This initial configuration assigns the TCP/IP
networking parameters that enable access to CMC.
CMC and iDRAC on each server and the network management ports for all
switch I/O Modules are connected to a common internal network in the
M1000e chassis. This allows the management network to be isolated from the
server data network. It is important to separate this traffic for uninterrupted
access to chassis management.
CMC is connected to the management network. All external access to CMC
and iDRACs is accomplished through CMC. Access to the managed servers,
conversely, is accomplished through network connections to I/O modules
(IOMs). This allows the application network to be isolated from the
management network.
NOTE: It is recommended to isolate chassis management from the data network.
Dell cannot support or guarantee uptime of a chassis that is improperly integrated
into your environment. Due to the potential of traffic on the data network, the
management interfaces on the internal management network can be saturated by
traffic intended for servers.This results in CMC and iDRAC communication delays.
These delays may cause unpredictable chassis behavior, such as CMC displaying
iDRAC as offline even when it is up and running, which in turn causes other unwanted
behavior. If physically isolating the management network is impractical, the other
option is to separate CMC and iDRAC traffic to a separate VLAN. CMC and individual
iDRAC network interfaces can be configured to use a VLAN with the racadm
setniccfg command. For more information, see the
RACADM Command Line
Reference Guide for iDRAC7 and CMC.
If you have one chassis, connect CMC and the standby CMC to the
management network. If you have a redundant CMC, use another network
cable and connect the GB CMC port to a second port of the management
network.