Morning Shift: 7:00 AM – 3:00 PM
7:00 AM: Shift Handover and Initial Checks
- Arrival and Briefing: You arrive at the NOC (Network Operations Center) a few minutes before your shift starts. The outgoing night shift engineer briefs you on the status of the network, any incidents that occurred overnight, and ongoing issues that need attention.
- Morning System Check: You start by reviewing the system dashboards, checking for any alerts or warnings. This includes monitoring WAN links, LAN switches, and routing protocols like EIGRP, OSPF, and BGP4.
8:00 AM: Incident Detection and Initial Response
- Alert: A critical alert pops up on your monitoring system indicating that a major branch office has lost connectivity.
- First Point of Contact: You immediately acknowledge the alert and start the incident response process. You log into the affected routers and switches to verify the issue.
- Initial Troubleshooting: Running diagnostic commands, you identify that the WAN link to the branch office is down. You check the service provider’s status page and see no reported outages.
8:30 AM: Root Cause Analysis and Escalation
- Deeper Analysis: Further investigation shows that the issue might be related to a recent configuration change on the branch office router. You compare the current configuration with the previous stable version and notice a misconfigured routing statement.
- Fix Attempt: You revert the configuration change and test the connection. The branch office is back online.
- Documentation: You document the incident, the steps taken to resolve it, and the root cause in the incident management system.
10:00 AM: Proactive Monitoring and Maintenance
- Routine Checks: With the critical incident resolved, you return to proactive monitoring. You review the performance metrics of the network, checking for any unusual patterns or potential issues.
- Scheduled Maintenance: You assist in applying firmware updates to network devices, ensuring that they are up to date with the latest security patches.
12:00 PM: Lunch Break
1:00 PM: Client Communication and Ongoing Projects
- Client Communication: A client calls in, reporting intermittent connectivity issues with their remote office in Japan. They provide some initial details.
- Incident Logging: You log the incident and start the initial triage. You notice that the issue coincides with high traffic periods.
- Deep Dive: You perform a deeper analysis and determine that the issue is due to congestion on the local network at the remote office. You suggest some configuration changes to the client to balance the load better.
- Follow-Up: You arrange a follow-up meeting with the client to review the impact of the changes and ensure the issue is resolved.
2:30 PM: Escalations and Team Collaboration
- Complex Incident: An alert indicates that multiple sites are experiencing degraded performance. Initial checks don’t reveal an obvious cause.
- Escalation: You escalate the incident to the Tier 3 team for further analysis. You provide them with all the logs and data you’ve collected.
- Collaboration: While waiting for a resolution, you continue to monitor the situation and stay in communication with the Tier 3 team, ready to assist with additional information or actions.
Afternoon Shift: 3:00 PM – 11:00 PM
3:00 PM: Shift Handover
- Briefing: You brief the incoming shift on the current status of the network, ongoing incidents, and any scheduled tasks or maintenance.
4:00 PM: Evening Monitoring and Support
- Monitoring: As the shift continues, you maintain your focus on the monitoring systems, keeping an eye out for any new alerts.
- Support: You assist with any incoming support requests from clients, ensuring they are logged and addressed promptly.
7:00 PM: Critical Incident Management
- Major Outage: Suddenly, a major outage occurs affecting a key data center. Multiple alerts come in, and it’s clear this is a significant issue.
- Immediate Response: You immediately jump into action, coordinating with your team and the on-call Tier 3 engineers. You inform the management and start troubleshooting.
- Client Communication: You communicate with affected clients, informing them of the outage and providing regular updates.
- Resolution Efforts: Working with the team, you identify the cause of the outage—a failed core switch. The team decides to reroute traffic through backup paths while the faulty switch is replaced.
9:00 PM: Incident Resolution and Documentation
- Restoration: The network is stabilized, and services are restored. You verify that all systems are back to normal and monitor for any residual issues.
- Post-Incident Review: You conduct a post-incident review, documenting the issue, the steps taken to resolve it, and any lessons learned to prevent future occurrences.
11:00 PM: End of Shift
- Final Checks: You perform final checks to ensure everything is stable before handing over to the night shift.
- Handover: You brief the incoming night shift engineer, providing them with all necessary information about ongoing issues and any critical tasks.
Conclusion
Working as a Network Engineer involves a mix of proactive monitoring, immediate incident response, troubleshooting, and client communication. It requires technical expertise, quick problem-solving skills, and the ability to work effectively under pressure. The role is dynamic and can be challenging, especially with the 24/7 work environment, but it offers opportunities to develop a deep understanding of network systems and technologies.