Connect. Secure. Manage.
Cisco First-Hop Redundancy
Configure HSRP or VRRP on supported Cisco platforms, validating gateway failover, tracking dependencies and recovery under realistic traffic conditions.
Devices supported
across the UK
Client locations
supported
Traffic handled
at peak time
Average
response time
Average response is not a resolution time or a contractual guarantee. Support scope and response commitments are agreed for each engagement.
Cisco first-hop redundancy provides an alternative default gateway when the active gateway becomes unavailable. Technologies such as HSRP and VRRP can help keep users connected after certain device or interface failures, but their success depends on the whole upstream path. MCI Network Services designs and tests first-hop redundancy on supported Cisco platforms, with attention to gateway ownership, failure detection and realistic application recovery.
Cisco-focused engineering
Design around the platform, traffic and failure behaviour you actually operate.
Change with evidence
Use pre-checks, acceptance criteria and a documented route back.
Operational handover
Keep the configuration, diagrams and responsibilities understandable after delivery.
Identify the gateway failure scenarios
A typical office VLAN has a default gateway that forwards traffic to other networks. If that gateway fails, endpoints may retain local connectivity but lose access to business applications and the internet. A first-hop redundancy design introduces a logical gateway address served by suitable network devices.
We begin by identifying which failures must be tolerated. Loss of one physical switch, one routed interface or an upstream circuit can produce different outcomes. A gateway that remains active while its internet or WAN connection has failed may continue attracting traffic and create a black hole. The design therefore needs more than two routers with matching virtual addresses.
Standards & partnerships
Confidence in the team behind your network.
Cisco Partner
Cisco Meraki
Cyber Essentials
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Choose the appropriate protocol and topology
HSRP and VRRP are not interchangeable in every environment. We review the supported Cisco hardware, software release, interoperability requirements and existing operational standards before choosing the protocol. We also confirm how the first-hop function interacts with switching stacks, StackWise Virtual or other chassis arrangements.
The topology must support both devices reaching the endpoint VLAN and the upstream network. We document physical links, VLAN membership, routing relationships and any security controls between the gateway and the applications. A redundant logical address cannot compensate for a single shared uplink or a failed firewall beyond both gateways.
A useful starting point
Not sure where to start?
Bring the requirement. We will help you define the engineering work.
Plan priorities and pre-emption
The preferred active device should be selected deliberately. We consider priorities, pre-emption behaviour and any platform-specific timers. Pre-emption can restore a preferred topology after recovery, but it may also cause another traffic interruption if a device becomes active before its upstream services are ready.
We document whether returning to the preferred gateway is necessary or whether the current active gateway can remain in service until a planned maintenance event. This decision should reflect application sensitivity and operational practice, not simply the default behaviour of a configuration template.
Different environments. The same care.
Built around the work
your network supports.
Finance, banking and the wider private sector. We start with the systems and people that depend on your connections.
Finance & banking
Market-data paths, routing and provider coordination on clients’ behalf.
Financial-market services ↗Offices & multi-site teams
Reliable access between people, workplaces and business applications.
Office network design ↗Data centres & cloud
Network boundaries, workload connections and operational ownership.
Data centre networks ↗Track upstream dependencies
Interface or object tracking can influence which gateway remains active when an important dependency fails. We assess what should be tracked and how the resulting state change will be triggered. A directly connected interface going down may be easy to detect, while loss of reachability beyond a provider edge may require a more considered mechanism.
Tracking also needs protection against instability. A marginal circuit that repeatedly changes state can cause unnecessary gateway transitions. We review the failure thresholds and recovery behaviour and test whether the chosen signals accurately represent usable service.
Coordinate with routing and security
First-hop redundancy addresses the local default gateway, not every routing or firewall problem. We check the route from each gateway to the relevant applications and the return path to clients. Stateful firewalls and NAT devices may need their own high-availability design, with separate considerations for session preservation.
Where gateways provide inter-VLAN routing, the design should maintain the intended segmentation and access policies on both devices. Configuration drift between gateways can create a failure that appears only when the standby becomes active. We compare interface configuration, routing and security policy before declaring the pair ready.
Test more than gateway reachability
A basic failover test can confirm that a client continues to resolve the virtual gateway, but it does not prove that business applications recover correctly. We test representative services, including any that maintain long-lived sessions or are sensitive to packet loss. We measure the observed interruption where appropriate and record the conditions.
Tests should include failure and restoration of a gateway, relevant uplinks and tracking dependencies where safe. We also check that monitoring identifies the active device and produces useful alerts when the design has lost redundancy even though user traffic still works.
Document the operating procedure
The operations team should know the normal active gateway, the conditions that trigger a transition and how to inspect protocol state. Change procedures should account for the virtual address, gateway priorities, tracking and routing. Replacing a switch without reviewing these settings can change the intended traffic path.
We recommend configuration backups, diagrams and an acceptance record that identifies which failure cases were actually tested. The design should also state what it does not protect against, including shared upstream services and application-level failures.
MCI supports Cisco and Meraki networks throughout the UK, especially London, Kent, Sussex, Essex and Berkshire. We can assess existing gateway redundancy, troubleshoot unexpected transitions or design a supported first-hop solution that fits the wider network.
Talk to a specialist
What does your network need next?
Tell us what you are planning, changing or trying to improve. We will help define a practical next step and the engineering scope.
+44 203 196 6566Choose option 1
sales@proxar.co.ukUK-wide service.
Most of our engineers are based in Kent, with a focus on London, Sussex, Essex and Berkshire.
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