12.2 DNS and DHCP

Domain Name Service (DNS) is the standard naming service in TCP/IP-based networks. It converts IP addresses, such as 192.168.1.1, to human-readable domain names, such as myserver.example.com, and it reverses the conversion process as required.

The Dynamic Host Configuration Protocol (DHCP) assigns IP addresses and configuration parameters to hosts and network devices.

For NetWare, Novell developed directory-integrated DNS/DHCP services that leverage eDirectory to provide centralized configuration and management through a Java* console accessible in iManager.

OES 2 Linux includes a ported version of the NetWare DNS service, and eDirectory integration with ISC DHCP as explained in the sections that follow.

12.2.1 DNS Differences Between NetWare and OES 2 Linux

The following are differences between DNS on NetWare and OES 2 Linux:

Table 12-1 DNS: OES 2 NetWare vs. OES 2 Linux

Feature or Command

OES 2 NetWare

OES 2 Linux

Auditing

Yes

No

DNSMaint

Yes

No

Fault Tolerance

Yes

Yes

Filenames and paths:

  • Server binary

  • sys:/system/named.nlm

  • /opt/novell/named/bin/novell-named

  • .db, .jnl file

  • sys:/etc/dns

  • /etc/opt/novell/named/named.conf

  • Stat file, info file

  • /var/opt/novell/log/named/named.run

Console commands:

 

 

  • Start the server

  • named

  • rcnovell-named or novell-named

  • Stop the server

  • named stop

  • rcnovell-named stop

  • Check Status

  • named status

  • rcnovell-named status

  • Unsupported command parameters

  • N/A

  • [-dc categories]

  • [-mstats]

  • [-nno_of_cpus]

  • [-qstats]

Journal log size

Specify at the command prompt by using the jsize argument.

Specify by using the iManager plug-in > max-journal-size field.

Management
  • iManager
  • Command Line Interface
  • iManager
  • Command Line Interface

Unlike the Netware implementation, command line parameters cannot be passed when loading and unloading.

SNMP Support

Yes

No

12.2.2 DHCP Differences Between NetWare and OES 2 Linux

Table 12-2 DHCP: OES 2 NetWare vs. OES 2 Linux

Feature or Command

OES 2 NetWare

OES 2 Linux

Auditing

Yes

No

Filenames and paths:

  • Conf file

  • N/A

  • /etc/dhcpd.conf

  • Leases

  • Stored in eDirectory

  • /var/lib/dhcp/db/dhcpd.leases

  • Log file

  • sys:/etc/dhcp/dhcpsrvr.log

  • /var/log/dhcpd.log

  • Startup log

  • N/A

  • /var/log/dhcp-ldap-startup.log

    This is a dump of DHCP configurations read from eDirectory when the DHCP server starts.

Management

iManager 2.7 (Wizard-based)

iManager 2.7 (Tab-based)

Unlike the NetWare implementation, command line parameters cannot be passed when loading and unloading.

Migration

N/A

There is seamless migration support from NetWare.

Schema changes

N/A

There are separate locator and group objects for centralized management and easy rights management.

SNMP Support

Yes

No

Subnet naming

Yes

No