Cisco CNS Network Registrar Users's Guide Web Interface, 6.0
Host Administration
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Host Administration

Table Of Contents

Host Administration

Host Administrator Role

Role Functions

Role Limitations

Listing Zones

Adding Hosts

Editing a Host


Host Administration


Cisco CNS Network Registrar host administration is the more basic of the two zone administration roles. A host administrator is responsible for hosts in a predefined DNS zone. The host administrator cannot create a zone. This is the responsibility of the zone administrator.

Table 5-1 lists the topics explained in this chapter.

Table 5-1 Host Administration Topics

If you want to learn about...
See...

Host administrator responsibilities

"Host Administrator Role" section

Listing zones

"Listing Zones" section

Adding hosts to a zone

"Adding Hosts" section

Editing a host

"Editing a Host" section


Host Administrator Role

The host administrator role applies to administrators of DNS records who want to update DNS name and IP address information for devices on their network. It is not appropriate for host administrators to know the details of DNS administration, as is the case with zone administrators.

The host administrator role assumes that a more experienced DNS administrator configures the zones. The more experienced zone administrator uses the global administrator (ccm-admin) role to define the host administrator roles by specifying which zones and which address ranges a host administrator can work with. Zone administration is described in "Zone Administration."

The use of the host concept, which corresponds to a specific machine that can have a name and an address (and for advanced users, other DNS resource records), simplifies the administrator's mapping of the real world into the user interface concepts. The most common operations that the host administrator might perform are associated with significant events involving computer hardware—a new computer arrives, changes locations and thus its IP address, or changes owners and thus its name. As part of these events, the DNS information for that computer needs to be updated.

Role Functions

The functions of the host administrator role are:

Add a new host with a unique name and IP address to a specific zone

Remove a host from a specific zone

View the list of zones names in which the administrator will manage hosts

View the list of hosts in a specific zone

Find an unassigned IP address in a specific subnet

Change the name of a host

Change the IP address for a host

Assign or remove additional addresses to or from a host

Role Limitations

The host administrator role can be constrained by a list of zones. Only hosts in one of the allowed zones can be viewed, added, modified, or deleted. When global administrators set up host administrator roles, they can decide how they want to constrain the role.

Listing Zones

A host administrator can list the created zones before adding hosts to them.

How to Get There

On the Primary Navigation bar, click the Host tab. On the Secondary Navigation bar, click the Zones tab. This opens the List Zones page (see Figure 2-7).

This function is only available if there is more than one zone that you can access. You cannot create zones as a host administrator. An administrator with zone creation rights must create the zones for you. If you can access only one zone, the List/Add Hosts for Zone page appears (see Figure 2-8).

Actions to Take

Click the zone name to edit the zone so that you can add hosts to it.

Adding Hosts

Adding a host to a zone involves adding an Address (A) and Pointer (PTR) DNS resource record for the host. The Web UI allows you to create both at one time.

How to Get There

You can get to a page where you can add hosts to a zone in two ways:

On the Primary Navigation bar, click the Host tab. On the Secondary Navigation bar, click the Zones tab. This will work initially only if you have only one zone created, because the Web UI cannot determine to which zone the hosts belong.

On the List Zones page (see Figure 2-7), click a zone name.

This opens the List/Add Hosts for Zone page (see Figure 2-8).

Data to Enter

You must enter the fields described in Table 5-2 to create a host for a zone.

Table 5-2 Entries on the List/Add Hosts Page 

Entry
Description

Hostname

Name of the host.

IP Address

IP address for the host, in quad format, such as 192.168.50.23.

Create PTR Records?

Leave this box checked if you want Network Registrar to automatically create reverse address or Pointer (PTR) records for the host in the reverse zone. (This reverse zone must exist for the subnet. See the "Managing Reverse Zones" section.) This box is checked by default.

Valid IP Ranges

Indicates the valid address ranges, if any, as defined by subnet ranges. See the "Editing or Adding Address Ranges to a Subnet" section.


Actions to Take

To add just the data entered on this page, click Add Host. This adds the host to the list below the fields. You can then click the name in the list to edit the host (see the "Editing a Host" section), or you can delete it by clicking the Delete icon () next to the hostname.

Editing a Host

You can also edit an existing host entry, including adding more IP addresses.

How to Get There


Step 1 On the Primary Navigation bar, click the Host tab.

Step 2 On the Secondary Navigation bar, click the Zones tab, or if there is just one zone, the Hosts tab.

Step 3 If you are on the List Zones page (see Figure 2-7), click the name of the zone to open the List/Add Hosts for Zone page (see Figure 2-8).

Step 4 On the List/Add Hosts for Zone page, click the hostname in the list. This opens the Edit Host page (see Figure 5-1).

Figure 5-1 Edit Host Page


Data to Enter

The Edit Host page includes the fields described in Table 5-3.

Table 5-3 Entries on the Edit Host Page 

Entry
Description

Name

Host name. You cannot edit this field.

IP Address

Original IP address created for the host, and an entry field for an additional hostname, in quad format, such as 192.168.50.23. The address must be unique in the zone. Click the Add IP button to add the IP address to the list. If you want to delete an unwanted address, click the Delete icon () next to it. Required.

Create PTR Records?

You can automatically create the reverse address or pointer (PTR) records for the host. The true radio button is selected by default. If you do not want to create PTR records for the host, select the false radio button.


Actions to Take

Click Modify Host to modify the host, or Cancel to cancel.