Connect. Secure. Manage.
Internet Edge Networks
Design Cisco or Meraki internet edge networks around circuits, public addressing and clear responsibilities for carrier faults and network support.
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.
Internet edge networks connect your business to providers and public services. We plan Cisco-led edges around addresses, routes, security and the effect of provider faults. Each connection needs a clear owner and recovery plan. Another circuit or a larger firewall may help, but the complete path must be designed and tested together.
The whole path
Understand how sites, providers, cloud networks and security controls fit together.
Resilience that can be tested
Separate a second circuit from genuine end-to-end service resilience.
Provider coordination
Keep addressing, routing and escalation ownership clear across organisations.
Identify the services that depend on the edge
We map outbound user traffic, published apps, remote access, cloud connections and any private provider handoffs sharing the infrastructure. Each can have different addressing, security and recovery needs. A business using only outbound browsing has a different edge need from one hosting services or relying on external allowlists.
The inventory also includes DNS, identity and management dependencies. An edge outage may prevent engineers reaching the very systems needed to restore it. We identify those circular dependencies early and decide which recovery paths need to remain independent of ordinary production internet access.
Standards & partnerships
Confidence in the team behind your network.
Cisco Partner
Cisco Meraki
Cyber Essentials
Cyber Essentials PlusMCI Network Services is operated by Proxar Ltd. Certifications apply to the certified legal entity and the scope of its certificates. View accreditation information
Establish the routing and addressing model
The design considers provider-assigned or other authorised public address space, static or dynamic routing and the networks that may be advertised. BGP is appropriate for some multi-provider arrangements. But it is not automatically required for every business with two internet connections. The choice follows the addressing and service needs.
Address translation and inbound services are documented alongside routing. A change of circuit can change the public address seen by external systems, affecting allowlists, VPNs and published apps. We identify those dependencies before treating failover as a simple default-route change.
A useful starting point
Not sure where to start?
Bring the requirement. We will help you define the engineering work.
Place security controls on the actual paths
Firewalls and related controls need to govern the traffic they are expected to protect. We trace normal and alternative routes, including direct cloud or provider connections, and identify any path that could bypass the intended enforcement point. Management access is separated from ordinary user and app traffic.
The security model also covers routing and device administration. Permitted peers, advertised prefixes and reachable management services require clear control. A high-capacity edge with weak admin ownership can create significant risk even when its forwarding policy appears restrictive.
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 ↗Design resilience beyond circuit count
Two services can share a local access route, provider equipment, power or an upstream carrier dependency. We review the evidence for diversity and distinguish confirmed independence from an assumption based on supplier names. The architecture should explain which failure cases it tolerates and which remain shared risks.
Capacity during failure is equally important. The surviving connection may need traffic prioritisation or a reduced-service plan. We set out those expectations with the customer, rather than suggesting that a lower-bandwidth backup will necessarily maintain every app's normal experience during a busy period.
Consider denial-of-service and upstream coordination
An on-site device cannot recover bandwidth that has already been saturated upstream. Where the business needs protection against larger denial-of-service events, we assess the role of the carrier or a specialist service and the supported integration. The scope identifies activation, routing and escalation duties rather than assuming a local firewall setting solves every availability threat.
Provider communication also matters for ordinary incidents. We document circuit identifiers, demarcation points and the evidence needed to distinguish a local fault from a carrier problem. Clear ownership reduces delay when several suppliers are involved in one connection.
Validate applications and recovery paths
Acceptance tests check expected routes, public addressing, permitted inbound services and representative outbound workflows. Remote access and external allowlists are included where they depend on the edge. Testing only a public ping can miss important app and security failures.
Agreed fault scenarios observe both loss and restoration of links or devices. We record whether sessions survive, reconnect or require other action, and whether the alternative path retains the intended protection. Any untested scenario remains clear in the acceptance record.
We also check the practical demarcation between provider and customer equipment. Interface errors, optical levels where available and agreed handoff tests can help establish who needs to act during an incident. The operating record should make that evidence accessible without requiring engineers to reconstruct the installation from old procurement emails.
Maintain an edge that can change safely
The handover includes addressing, routing policy, firewall duties, provider contacts and certificate or DNS dependencies. Software updates, circuit changes and new published services should follow a controlled process with an appropriate rollback plan. Monitoring needs to identify lost redundancy and complete outage.
MCI can prepare a new Cisco internet edge design or review a current setup before a provider migration. Share the circuits, public services and availability needs. We can define an edge that supports the business's actual connections and makes the limits of its resilience and security clear.
Technical references
- Cisco IOS XE software hardening guide — Cisco / Cisco Meraki
- MX load balancing and flow preferences — Cisco / Cisco Meraki
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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