Connect. Secure. Manage.
Container Network Integration
Review how container platforms connect to Cisco networks, addressing routing, MTU, service exposure and the boundary between host and physical networking.
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.
Container network integration connects the networking used by a container platform to the physical Cisco estate and external services. The correct design depends on the platform’s network plugin, routing model and service-exposure method. MCI Network Services reviews these boundaries with the host and platform teams, separating physical network work from application orchestration and avoiding assumptions based solely on the presence of containers.
Workload-led design
Start with application, compute and storage dependencies rather than the switch model.
Clear failure domains
Understand which links, devices and sites can fail together.
Operational clarity
Make fabrics, external routing and management responsibilities supportable.
Understand how the platform forwards traffic
A container platform may use an overlay, routed pod networks, host networking or several approaches for different workloads. We identify the actual implementation and the addresses visible on the physical network. A host running containers does not automatically behave as a bridge to every container or emit the same traffic as a downstream switch.
The assessment records node networks, workload address ranges, service addresses and external entry points. It also identifies which components own routing and network policy. This creates a useful starting point for integration instead of treating every reported connection failure as an ordinary VLAN problem.
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
Check addressing and route ownership
Container and service ranges must be considered alongside office, data-centre, VPN and partner networks. Overlap can cause confusing failures when a destination is interpreted as local to the platform rather than reachable through the enterprise network. We review the addressing plan before introducing new external routes.
Where the platform advertises routes to Cisco devices, the peering and export policy are explicit. We agree which prefixes may be announced, how they are withdrawn and who controls those changes. A platform-generated routing session needs the same discipline as any other boundary, including protection against unexpected route volume or leakage.
A useful starting point
Not sure where to start?
Bring the requirement. We will help you define the engineering work.
Account for encapsulation and MTU
Overlay traffic can require additional packet overhead, making the usable workload MTU different from the physical interface value. We trace the relevant paths, including firewalls and external links, and verify the sizes the application can actually use. Intermittent failures with larger responses often require this end-to-end view.
We also consider where network address translation occurs. A packet seen at a physical interface may carry a node or translated address rather than its original container address. Troubleshooting records must reflect this transformation so engineers do not misidentify the source or claim that a capture proves which application generated the traffic.
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 ↗Expose services through defined boundaries
External users may reach a platform through ingress services, load balancers, advertised addresses or a supported combination. We document where traffic enters, which system performs health checks and how return traffic leaves. A working connection to a node is not proof that the application service is correctly exposed.
Firewall and routing changes follow the actual service requirement. We avoid broad permissions to entire workload ranges when only selected applications need external access. Platform network policy and physical security controls complement one another, but their coverage and administrative ownership must be understood rather than assumed equivalent.
Review host connections and protection settings
Host uplinks, VLAN tagging and aggregation must match the physical design. We examine any legitimate bridging or multiple-MAC requirements before applying access-port templates. Controls such as BPDU Guard are selected according to actual port behaviour, not enabled or disabled across an estate merely because a server runs Docker or Kubernetes.
Management and recovery access also need a deliberate path. Changes to container networking can affect host reachability, monitoring and DNS dependencies. The implementation plan includes how engineers will regain control if the platform’s normal network becomes unavailable and which actions require approval from its owner.
Validate traffic across all relevant layers
Tests trace representative traffic between workloads, between nodes and from external clients. We compare the platform’s intended route with the physical forwarding path and inspect the return direction. The evidence may include host captures, Cisco counters, routing information and application tests, handled under an agreed data-access scope.
Failure tests address selected node or uplink losses where safe. We distinguish the network’s recovery from the scheduler or application replacing a failed workload. An outage can continue after physical connectivity returns because service discovery, state or endpoint registration still needs to recover.
Establish a supportable integration
Deliverables include addressing, route policy, MTU assumptions, service-entry paths and a responsibility map. The change process should cover updates to the network plugin or platform configuration because those can alter physical-network behaviour without a switch change. Monitoring and escalation must connect the teams rather than split the incident at the host boundary.
MCI provides Cisco-focused integration as part of private cloud networking. We can review a proposed platform or investigate an existing issue, with container administration and application development retained by their designated owners. The outcome is a documented, testable connection between the platform and 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.
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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