Cisco Network Registrar

Cisco Network Registrar 7.2 Q and A Item

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Q.   What is Cisco ® Network Registrar?
A.    The Cisco Network Registrar solution provides comprehensive Domain Name System (DNS) and Dynamic Host Configuration Protocol (DHCP) administrative functions to help customers automate and streamline IP networking services, including business-critical tasks such as client configuration and provisioning. It also supports Trivial File Transfer Protocol (TFTP), which can be used to download and upload data.
Cisco Network Registrar was designed from the start as a scalable, customizable, highly available, and easy-to-integrate product. Cisco Network Registrar is deployed today on some of the largest networks in the world, supporting millions of DOCSIS ® and DSL subscribers.


Q.   What licensing method does Cisco Network Registrar utilize?
A.    Cisco Network Registrar 7.2 utilizes a file-based FlexLM license as the standard licensing mechanism. The FlexLM mechanism does not alert users if the number of deployed nodes in the network is about to hit the limit in their right-to-use (RTU) licenses. Users must still make sure that their node count does not exceed their limit.
Q.   What is the Cisco Network Registrar licensing model?
A.    Cisco Network Registrar continues to be licensed based on the number of IP nodes, the same model it has been supporting over the years. To order Cisco Network Registrar, users first order the base license, which includes the software media kit and a license for 1000 IP nodes. If the network has more than 1000 IP nodes, users can order additional licenses to cover the remaining IP nodes. Similarly, when upgrading to Cisco Network Registrar, users can upgrade the base license and then add additional licenses if necessary.
Q.   Do I need to purchase licenses for each server I deploy?
A.    No, only the total number of IP nodes counts. You may deploy Cisco Network Registrar on as many servers as you need to, including features such as redundancy, regional cluster, and so on.


Q.   What are the features introduced in Cisco Network Registrar 7.2?
A.     New features and improvements in Cisco Network Registrar 7.2 include IPv6 support for command-line interface (CLI) and Software Development Kit (SDK) connections, IPv6 lease history, improved UI lease history query, Bulk Lease Query in V6 (RFC 5460), RADIUS authentication support for management, client reservations, multitenant management, virtual appliance support, new platform support (Solaris 10 LDOM, VMware, Red Hat Enterprise Server 5) and a new and improved web UI look and feel.
Q.   What is new regarding IPv6 support?
A.    Cisco Network Registrar now supports full management over IPv6. Administrators can now connect to Cisco Network Registrar regional and local clusters through the web UI, the SDK, and the CLI over IPv6.
Q.   What is IPv6 lease history?
A.    Similar to DHCPv4 lease history, Cisco Network Registrar now supports lease history for DHCPv6, including the following features:

   Support for querying DHCPv6 lease history for both local and regional clusters

   Activating searches that may take a long time without locking the web UI

   Incremental retrieval and display of results

   Ability to pause, restart, or abandon historic searches

Q.   What are the lease history query improvements?
A.    Searching of lease history is now possible both at local and regional clusters. These improvements include:

   Ability to compose a filter expression

   Activation of searches that may take a long time without locking the web UI

   Incremental retrieval and display of results without the need for a page refresh

   Ability to pause, restart, or abandon historic searches

   Support “iphist” on local and regional clusters

Q.   What is Bulk Lease Query in DHCPv6 (per RFC 5460)?
A.    Cisco Network Registrar supports DHCP Bulk Lease Query V6 as per RFC 5460. For Version 6 bulk lease query, TCP connections are established between the DHCP server and the client through a user-configurable port. This feature supports the following query types for DHCPv6 bulk lease query transfer:

   Query by IPv6 address

   Query by client ID

   Query by relay ID

   Query by link address

   Query by remote ID

Q.   What is Radius authentication?
A.    Cisco Network Registrar now supports RADIUS external authentication. Cisco Network Registrar provides RADIUS client functionality, which, in conjunction with appropriately configured RADIUS servers, allows the customer to define a pool of authorized users. When a valid user logs on to Cisco Network Registrar, a RADIUS request with the appropriate retries and fallbacks is generated. The RADIUS response includes, for authenticated users, attribute information that specifies the Cisco Network Registrar roles for which this user is authorized.
This capability coexists with the existing locally managed Cisco Network Registrar authentication and authorization mechanisms. This function is transparent to the valid authorized user, whether externally or locally defined.
Q.   What are client reservations?
A.    Cisco Network Registrar has been extended to provide client reservations. These reservations can be stored internal to Cisco Network Registrar (through the Cisco Network Registrar client entries) or external to Cisco Network Registrar - either in Lightweight Directory Access Protocol (LDAP) or supplied through the DHCP server’s extension interface from other external sources. This avoids the need to synchronize data with Cisco Network Registrar’s internal databases and provides for a much more dynamic and scalable reservation-based service.
Q.   What is multitenant management?
A.    Cisco Network Registrar’s multitenant management provides the ability to segment data stored on both regional and local clusters by tenant. This feature creates a central management point for a customer’s configurations and network data where configurations may be consolidated on a set of infrastructure servers. Any given local cluster may be associated with one or more tenants. Within a local cluster, the address pools and domain names to a given tenant are separated, allowing multiple tenant environments to coexist on a single instance of Cisco Network Registrar.
Q.   What is Cisco Network Registrar’s virtual appliance support?
A.    Cisco Network Registrar is now available preinstalled on a Linux operating system and packaged as a virtual appliance. The virtual appliance is a VMware virtual machine that includes all of the software necessary to operate Cisco Network Registrar and will run on any VMware ESXi 4.1-capable server. It requires only a Cisco Network Registrar license to be up and running immediately after deployment. There are two virtual appliances available, one for a local cluster and one for a regional cluster. They are both available in Open Virtualization Format (OVF) and may be downloaded over the web.
Q.   On what platforms is Cisco Network Registrar supported?
A.    Platform support for Cisco Network Registrar currently includes Windows Server 2008 R2, Solaris 10, and Red Hat Enterprise Server 5. Cisco Network Registrar is now also certified to run on Solaris 10 LDOM, VMware ESX 4.x (for Red Hat Enterprise Server 5 and Windows Server 2008 R2), and Cisco Unified Computing System (UCS). Previous platforms are no longer supported.
Cisco Network Registrar is optimized to use multicore processors. It is certified to run on 64-bit variants of the supported OS versions.
Q.   What’s new with the web interface?
A.    Cisco Network Registrar now has a new look and feel that is both visually appealing and improves product navigation with an improved menu system.