Connect. Secure. Manage.
WAN Performance
Improve Cisco and Meraki WAN performance through measurement and policy changes, separating network constraints from application issues.
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.
WAN performance becomes a business issue when calls break up, cloud applications hesitate or routine transfers take longer than the working day allows. Buying more bandwidth is not always the answer. MCI Network Services assesses Cisco and Meraki WAN performance using the traffic, paths and applications that actually matter to the organisation. We identify whether the constraint is capacity, loss, delay, policy or a dependency outside the WAN itself.
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.
Describe the experience before choosing a metric
We start with specific symptoms: which users are affected, which application they are using and when the problem occurs. A slow file transfer, delayed voice conversation and failed browser transaction can have different causes even when they share a circuit. We agree representative tests and a baseline that reflects the customer’s working pattern rather than an isolated speed-test result.
The assessment records the complete path from the user network to the application. Local wireless, LAN uplinks, firewalls, VPN tunnels, internet exits and cloud services can all influence the experience. We do not attribute every delay to the carrier simply because the application is remote. Comparing affected and unaffected paths often identifies where a focused investigation should begin.
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
Measure capacity and congestion in context
Average interface utilisation can hide short bursts that fill queues and drop traffic. We review available counters, traffic trends and the measurement interval before drawing conclusions. A circuit running below its nominal rate may still be limited by a provider policer, an incorrectly configured shaper or a slower connection further along the route.
We also examine the traffic competing for capacity. Backups, software distribution and large uploads may be legitimate but poorly scheduled. The question is whether the network can support concurrent demand, including the reduced capacity available during failover. Capacity recommendations show the observed constraint and the assumptions behind growth estimates instead of adding an arbitrary percentage to the current circuit size.
A useful starting point
Not sure where to start?
Bring the requirement. We will help you define the engineering work.
Separate delay, variation and loss
Latency describes delay, jitter describes variation in packet timing, and packet loss has its own effect on applications. These measurements should not be collapsed into a single vague quality score. We select probes and observation points appropriate to the service, including direction, packet size and traffic class where relevant. One measurement method may not reproduce the treatment of another application’s traffic.
Our latency and jitter analysis and packet loss investigation provide deeper examination when required. Round-trip delay is not silently treated as accurate one-way delay, and a router that responds slowly to diagnostic traffic is not automatically blamed for forwarding loss. Conclusions follow the evidence collected at suitable points.
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 ↗Review routing and policy choices
Cisco and Meraki environments can use several paths to reach the same application. We review route selection, SD-WAN performance policies, tunnel overhead and the location of security inspection. A central internet exit may simplify policy while adding distance for a remote office; local breakout may improve a path but requires an approved security design.
Quality of service is considered where contention exists and the platform supports the required behaviour. Classification, trust boundaries, queue allocation and shaping must align with the actual circuit. Prioritising every application is not meaningful, and local marking does not guarantee treatment across the public internet. We explain what policy can improve and what still requires capacity or provider action.
Make improvements through controlled comparisons
Before changing production policy, we capture the baseline and define how success will be measured. Changes may involve scheduling bulk transfers, correcting a shaping rate, selecting a more suitable exit or adjusting supported application-routing policy. We introduce them in a sequence that allows their individual effects to be observed and reversed if the outcome is worse.
Testing includes important traffic that was not the original complaint. A policy that helps one application by starving another is not a general performance improvement. We also consider behaviour during a path failure and after restoration. The customer receives the results, remaining limitations and any additional work that depends on an application owner, carrier or cloud provider.
Keep performance visible after the review
The handover identifies useful measurements, thresholds and review intervals for the operating team. Monitoring should reveal a developing constraint without flooding staff with events that have no service impact. We recommend keeping a record of circuit changes, application migrations and policy adjustments so that future comparisons remain meaningful.
MCI offers Cisco and Meraki network services throughout the UK, including multi-site organisations with central IT teams. A focused assessment can investigate one troublesome application; a wider engagement can establish a capacity and performance plan for the WAN estate. Bring the symptom, site list and available measurements to the first discussion, and we will define the evidence needed before recommending changes.
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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