Users Guide

• Conguring Multiple CMCs through RACADM Using Chassis Conguration Proles
• Conguring multiple CMCs using RACADM
Enabling or disabling DHCP for the CMC Network
Interface Address
When enabled, the CMC’s DHCP for NIC address feature requests and obtains an IP address from the Dynamic Host Conguration
Protocol (DHCP) server automatically. This feature is disabled by default.
You can enable the DHCP to obtain an IP address from the DHCP server automatically.
Enabling or disabling DHCP for DNS IP addresses
By default, the CMC’s DHCP for DNS address feature is disabled. When enabled, this feature obtains the primary and secondary DNS
server addresses from the DHCP server. While using this feature, you do not have to congure static DNS server IP addresses.
To enable the DHCP for DNS address feature and specify the static preferred and alternate DNS server addresses, type:
racadm config -g cfgLanNetworking -o
cfgDNSServersFromDHCP 1
To enable the DHCP for DNS address feature for IPv6 and specify the static preferred and alternate DNS server addresses, type:
racadm config -g cfgIPv6LanNetworking -o
cfgIPv6DNSServersFromDHCP6 1
Setting static DNS IP addresses
NOTE
: The static DNS IP addresses settings are not valid unless the DCHP for DNS address feature is disabled.
For IPv4, to set the preferred primary and secondary DNS IP server addresses, type:
racadm config -g cfgLanNetworking -o cfgDNSServer1 <IP-address>
racadm config -g cfgLanNetworking -o cfgDNSServer2 <IPv4-address>
For IPv6, to set the preferred and secondary DNS IP Server addresses, type:
racadm config -g cfgIPv6LanNetworking -o
cfgIPv6DNSServer1 <IPv6-address>
racadm config -g cfgIPv6LanNetworking -o
cfgIPv6DNSServer2 <IPv6-address>
Viewing and modifying CMC network LAN settings
The LAN settings, such as community string and SMTP server IP address, aect both the CMC and the external settings of the chassis.
When IPv6 is enabled at boot time, three router solicitations are sent after every four seconds. If external network switches are running the
Spanning Tree Protocol (STP), the external switch ports may be blocked for more than 12 seconds in which the IPv6 router solicitations are
sent. In such cases, there may be a period when IPv6 connectivity is limited, until router advertisements are gratuitously sent by the IPv6
routers.
NOTE
: Changing the CMC network settings may disconnect your current network connection.
NOTE: You must have Chassis Conguration Administrator privilege to set up CMC network settings.
Conguring CMC 65