Connect. Secure. Manage.
Partner Network Connectivity
Design Cisco network links to partners or customers, documenting address spaces, permitted services, routing ownership and controlled separation.
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.
Partner network connectivity gives a supplier, customer or other partner access to specific services. We agree what the link should expose and who will maintain it before planning routes. Cisco-led controls limit the access, with Meraki included where supported. The design also gives both teams a practical way to investigate faults across the handoff.
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.
Define the permitted relationship
We start with the app owners on both sides. The need should identify the users or systems initiating traffic, the destination services and any supporting dependencies such as DNS or authentication. A request to connect two networks is too broad to become a safe rollout specification. The customer approves a service-level access matrix before general reachability is introduced.
The assessment also considers the commercial lifecycle. A temporary integration, long-term supplier service and acquisition transition need different review and exit arrangements. We confirm who can request changes, who authorises them and when the connection should be reassessed. This prevents a narrowly scoped project link from becoming a permanent unowned route into the organisation.
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
Resolve address conflicts before deployment
Partners often use overlapping private address space. We compare the relevant ranges and identify conflicts affecting the required apps. Possible approaches include readdressing, carefully scoped translation or separation into routing contexts. The appropriate choice depends on app behaviour, platform support and who controls the systems involved; there is no universal translation template that works safely for every integration.
Where translation is used, the design records both original and translated addresses, the direction of each rule and the impact on logging. Application teams may need to update access lists or references to fixed addresses. We also examine return traffic and avoid creating a solution that works for an initial connection but fails when a server initiates a related session in the opposite direction.
A useful starting point
Not sure where to start?
Bring the requirement. We will help you define the engineering work.
Choose a connection with the right trust boundary
The transport might be an encrypted tunnel, a private carrier service or a direct cross-connect. We compare the options against availability, capacity and security needs. A private path does not on its own provide encryption, and an encrypted tunnel does not authorise unrestricted access to every network behind it. Those decisions are considered separately and documented.
Cisco firewall and routing controls are placed where they can enforce the approved access matrix. We review management traffic, shared infrastructure services and the possibility of one partner reaching another through the customer’s network. The intended result is a controlled app relationship, not accidental transit. Logging should be sufficient for investigation without exposing unnecessary information from either organisation.
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 ↗Agree routing and failure behaviour
Static routes may suit a small, stable connection; BGP or another supported approach may be appropriate where prefixes and paths need more control. We set out which routes each party can advertise and accept. Any default route or redistribution is examined carefully because a small setup error at this boundary can affect traffic unrelated to the partner service.
Resilience requires agreement at both ends. We establish whether there are independent paths, how the preferred route changes during a failure and whether firewalls retain or re-establish sessions. Supplier response obligations and the customer’s own recovery steps are documented separately. A redundant circuit does not provide useful continuity if the partner app exists behind a single failed dependency.
Test allowed and prohibited access
The acceptance plan includes representative app transactions in both directions where required. We check addressing, routing, DNS and security policy, then test that unrelated destinations remain inaccessible. Tests are authorised and bounded. They are not a general penetration test of the partner’s infrastructure. Any broader security assessment needs its own permission and scope.
Both organisations receive the evidence relevant to their duties. We agree which logs and timestamps will be used during a future incident and how sensitive setup can be exchanged securely. A useful handover includes a circuit or tunnel reference, escalation contacts and an access matrix that can be understood without recreating the project from email correspondence.
Keep access current and remove it cleanly
Partner needs change. We recommend periodic review of permitted networks, unused rules and the people authorised to request changes. A new app should not automatically inherit the access granted to an earlier one. Where a temporary workaround is introduced, its expiry or removal condition is recorded with an accountable owner.
At the end of the relationship, we can help withdraw routes, disable tunnels, remove credentials and check that residual access has gone. This work sits within our broader private network interconnect services. MCI supports UK organisations connecting to partners locally or internationally. The initial scope should describe the business service and boundaries, without sending passwords or confidential production diagrams through a public form.
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.
Existing customers should use their agreed support and escalation channels. This form is for service enquiries, not a monitored emergency ticket.
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