10.2 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.

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

10.2.1 DNS Differences Between NetWare and OES

As you plan to upgrade from NetWare to OES, consider the following differences between DNS on NetWare and OES:

Table 10-1 DNS: NetWare 6.5 SP8 vs. OES 2018 SP1

Feature or Command

NetWare 6.5 SP8

OES 2018 SP1

Auditing

Yes

No

Console commands:

 

 

  • Check Status

  • named status

  • rcnovell-named status

    or

  • systemctl status novell-named.service

  • Force Zone-in

  • -zi zone_name

N/A

  • Purge All Cache

  • -pa

N/A

  • Screen Logging

  • -s

N/A

  • Start the server

  • named

  • rcnovell-named start

    or

  • systemctl start novell-named.service

  • Stop the server

  • named stop

  • rcnovell-named stop

    or

  • systemctl stop novell-named.service

  • Unsupported named command parameters

  • N/A

  • [-dc categories]

  • [-mstats]

  • [-nno_of_cpus]

  • [-qstats]

  • Zone Information

  • -info file_name

N/A

DNSMaint

Yes

Yes - dns-maint

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

Journal log size

Specify at the command prompt by using the jsize argument.

Specify using Java Console, DNS Server Object>Advanced tab > max-journal-size field.

Management

  • iManager
  • Command Line Interface
  • Java Console
  • Command Line Interface

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

SNMP Support

Yes

No

10.2.2 DHCP Differences Between NetWare and OES

As you plan to upgrade from NetWare to OES, consider the following differences between DHCP on NetWare and OES:

Table 10-2 DHCP: NetWare 6.5 SP8 vs. OES 2018 SP1

Feature or Command

NetWare 6.5 SP8

OES 2018 SP1

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)

Java Console

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