Connect. Secure. Manage.
Wireless Packet Capture Analysis
Analyse authorised wireless captures to investigate protocol failures and client behaviour, with a defined capture scope and handling of sensitive data.
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.
Wireless packet capture analysis uses recorded traffic to investigate a defined connection, authentication, roaming or forwarding problem. MCI Network Services analyses authorised captures from Cisco and Meraki environments with attention to collection quality, protocol context and the limits of what the evidence can prove. The service is intended to explain a specific fault and support a controlled next action, not to collect unrestricted user traffic without a clear purpose.
Coverage and capacity
Design Wi-Fi around the spaces, devices and traffic that depend on it.
Secure access
Align authentication, segmentation and guest access with the wider network.
Measured performance
Validate roaming, interference and user experience instead of relying on signal bars.
Define the question before collecting packets
We begin with the symptom, affected clients, relevant locations and failure times. The investigation should have a question that a capture can help answer: whether a client attempted authentication, whether an address response returned or what happened during a particular transition. This makes it possible to choose a useful collection point and avoids producing a large file that does not include the event of interest.
The customer authorises the scope and identifies any information-handling constraints. Captures can reveal device identifiers, names, application details and, in some circumstances, sensitive content. We agree access, transfer, retention and permitted sharing before collection. Secrets, private keys and unrelated customer information are not requested through a public enquiry form, and any additional material needed for analysis is handled through an appropriate channel.
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
Choose the right observation point
An over-the-air capture and a wired-side capture show different parts of the service. A controller, access point, gateway or endpoint may expose different evidence depending on the architecture and supported tools. We identify which point can observe the stage under investigation and whether more than one view is needed to distinguish where traffic was lost or transformed.
Radio captures also depend on channel, location and the capabilities of the collection device. A trace that follows the wrong channel can miss the event entirely. We record those conditions and explain their effect on interpretation. A missing frame in one file is not automatically proof of a network fault, particularly when the collection method could not observe every relevant radio or encrypted exchange.
A useful starting point
Not sure where to start?
Bring the requirement. We will help you define the engineering work.
Check tool support and operational impact
Diagnostic capability varies by platform, software and device role. We check current guidance before enabling a capture or detailed trace on production equipment, including any known limitations relevant to the installed release. Some diagnostics consume resources or have service-impact considerations, so the collection plan includes duration, stop conditions and an owner able to respond if the tool behaves unexpectedly.
Where an existing capture is supplied, we first assess whether it contains enough context to answer the question. Timestamps, interfaces, filters and the client’s relevant state can be as important as the packets themselves. We may recommend a narrower repeat capture rather than drawing a confident conclusion from an incomplete file. That distinction keeps the analysis useful without pretending every recording is conclusive evidence.
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 ↗Reconstruct the relevant exchange
We identify the protocol stage and build a timeline around the affected client or service. Depending on the problem, this may involve association, authentication, key exchange, DHCP, DNS or application transport. The sequence is compared with the expected configuration and with supporting controller, dashboard or server records. Packet analysis is strongest when it explains the observed behaviour in that wider context.
We separate facts from interpretation. Repeated requests, an explicit rejection and an absent response imply different things. A capture may show that a reply did not reach the observation point without identifying why it was missing upstream. The report states the confidence and the additional evidence needed, rather than assigning blame to a device or provider solely because it sits beyond the capture boundary.
Turn the finding into a controlled test
The analysis leads to a specific corrective action, further check or vendor escalation. We explain how the evidence supports that next step and what result would confirm or challenge the hypothesis. Where a configuration change is proposed, it follows the customer’s change and rollback process. A packet trace should not become justification for broad, unreviewed changes to security or wireless policy.
Verification repeats the relevant user workflow and, where useful, collects a comparable trace after the change. We check that the original failure is addressed and that the remedy has not introduced an unwanted access path or affected other client groups. For intermittent incidents, the observation period reflects the recurrence pattern rather than treating a short quiet interval as proof of permanent resolution.
Deliver evidence that another engineer can follow
The deliverable includes a concise timeline, annotated findings and the capture references needed to reproduce the analysis. Sensitive information is handled according to the agreed scope, and vendor case material is limited to what is necessary. We also state the collection limitations and any questions the available evidence cannot answer.
MCI can analyse existing authorised files or arrange collection within wireless troubleshooting and roaming fault diagnosis. Describe the fault and available evidence first. We will determine a practical scope that produces an explained result and a useful next action, rather than simply returning protocol screenshots without showing what they mean for the customer’s service.
Technical references
- Packet capture overview — Cisco / Cisco Meraki
- Catalyst 9800 conditional diagnostics — 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.
Existing customers should use their agreed support and escalation channels. This form is for service enquiries, not a monitored emergency ticket.
Tell us what you need.
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