Experience DHCP Service Continuity with TCPWave's Failover Solution

Safeguard your network against downtime and service disruptions


Optimize resource utilization for smooth network operations with our failover solution.

The TCPWave DDI (DNS, DHCP, and IP Address Management) solution offers a flexible DHCP (Dynamic Host Configuration Protocol) solution that supports both the one-to-one model and the hub-spoke model for primary-failover configurations. Here's how TCPWave's DHCP failover protocol works in each of these models:

High Availability

  • TCPWave's DHCP failover protocol ensures uninterrupted DHCP services with seamless server failover, ensuring continuous IP address allocation and preventing service disruptions.

Improved Reliability

  • Ensures reliable and resilient DHCP services, minimizing downtime and ensuring operational continuity in the face of server failures or network disruptions.

Enhanced Scalability

  • Enables scalable IP address assignment to accommodate growing network demands, ensuring efficient DHCP performance as the organization expands.

Simplified Management

  • Simplifies DHCP service management with centralized control, enabling easy configuration, monitoring, and efficient resource utilization.
One-to-One Model

TCPWave DDI enables the configuration of a primary DHCP server and a failover DHCP server in a one-to-one relationship. The primary server handles DHCP lease allocation and management, while the failover server acts as a backup, ready to take over in case of primary server unavailability. Communication between the servers occurs through the DHCP failover protocol, ensuring synchronization of lease state information, timers, assignments, and renewals in their respective lease databases.

Failover States and Lease Synchronization

Our DDI supports different failover states, such as NORMAL, COMMUNICATION-INTERRUPTED, PARTNER-DOWN, and RESOLUTION-INTERRUPTED, which define the status of the failover relationship between the primary and failover DHCP servers. Additionally, the primary and failover servers synchronize their DHCP lease databases to ensure consistency. They exchange updates and changes, including lease creations, renewals, and releases, to maintain an up-to-date view of active leases. This synchronization guarantees that both servers have a consistent understanding of leased IP addresses, enabling them to seamlessly take over DHCP operations when necessary.

Hub-Spoke Model

Our DDI supports a hub-spoke model where a primary DHCP server is connected to multiple failover servers in a hub-spoke topology. The primary server acts as the central hub, while the failover servers serve as spokes, offering DHCP redundancy and load-balancing capabilities. Through the DHCP failover protocol, the primary server communicates with the failover servers, distributing lease assignments across them to achieve load balancing and optimize IP address allocation. This ensures efficient DHCP operations and enhances network reliability in the hub-spoke architecture.

Load Balancing and Failover Management

Our DDI intelligently distributes lease requests among the failover servers to balance the load. It monitors the lease utilization of each failover server and adjusts the allocation of new leases accordingly. Additionally, our solution efficiently manages the failover relationship between the primary server and failover servers. It ensures synchronization of lease state and configuration between them, ensuring that the failover servers are always up-to-date. In the event of primary server unavailability, one of the failover servers seamlessly takes over DHCP operations, guaranteeing uninterrupted IP address allocation and maintaining network connectivity.

By offering support for both the one-to-one model and the hub-spoke model, our solution provides flexibility in configuring DHCP failover relationships based on the specific needs of the network environment. The DHCP failover protocol ensures synchronization, load balancing, and failover management to maintain the high availability and reliability of DHCP services.