•
DNS Domain Name
— The default DNS domain name is a single blank character. To set a DNS domain name, type:
racadm config -g cfgLanNetworking -o
cfgDNSDomainName <name>
where <
name
> is a string of up to 254 alphanumeric characters and hyphens. For example: p45, a-tz-1, r-id-001.
Configuring Auto Negotiation, Duplex Mode, and Network Speed for IPv4 and IPv6
When enabled, the auto negotiation feature determines whether the CMC automatically sets the duplex mode and network speed by
communicating with the nearest router or switch. By default, auto negotiation feature is enabled.
You can disable auto negotiation and specify the duplex mode and network speed by typing:
racadm config -g cfgNetTuning -o cfgNetTuningNicAutoneg 0
racadm config -g cfgNetTuning -o cfgNetTuningNicFullDuplex <
duplex mode
>
where:
<
duplex mode
> is 0 (half duplex) or 1 (full duplex, default)
racadm config -g cfgNetTuning -o cfgNetTuningNicSpeed <
speed
>
where:
<
speed
> is 10 or 100 (default).
Setting the Maximum Transmission Unit for IPv4 and IPv6
The Maximum Transmission Unit (MTU) property allows you to set a limit for the largest packet that can be passed through the
interface. To set the MTU, type:
racadm config -g cfgNetTuning -o cfgNetTuningMtu <
mtu
>
where <
mtu
> is a value between 576–1500 (inclusive; default is 1500).
NOTE: IPv6 requires a minimum MTU of 1280. If IPv6 is enabled, and
cfgNetTuningMtu
is set to a lower value, the
CMC uses an MTU of 1280.
Configuring CMC Network and Login Security Settings
The IP address blocking and User blocking features in CMC allow you to prevent security issues due to password guessing attempts.
This feature enables you to block a range of IP addresses and users who can access CMC. By deafult, the IP address blocking
feature is enabled in CMC. You can set the IP range attributes using CMC web interface or RACADM. To use the IP address blocking
and user blocking features, enable the options using CMC web interface or RACADM. Configure the login lockout policy settings to
enable you to set the number of unsuccessful login attempts for a specific user or for an IP address. After exceeding this limit, the
blocked user can log in only after the penalty time expires.
NOTE: Blocking by IP address is applicable only for IPV4 addresses.
Configuring IP Range Attributes Using CMC Web Interface
NOTE: To perform the following task, you must have Chassis Configuration Administrator privilege.
To configure the IP range attributes using CMC web interface:
1.
In the left pane, go to
Chassis Overview
and click
Network
→
Network
. The
Network Configuration
page is displayed.
2.
In the IPv4 Settings section, click
Advanced Settings
.
The
Log in Security
page is displayed.
Alternatively, to access the Log in Security page, in the left pane, go to
Chassis Overview
, click
Security
→
Log in
.
3.
To enable the IP range checking feature, in the
IP Range
section, select the
IP Range Enabled
option.
The
IP Range Address
and
IP Range Mask
fields are activated.
4.
In the
IP Range Address
and
IP Range Mask
fields, type the range of IP addresses and IP range masks that you want to block
from accessing CMC.
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