L3 ACI Network

L3 ACI Network

About Company

TSC Redefines Connectivity with Innovation and IntelligenceDriving the next level of intelligence powered by Cloud, Mobility, Internet of Things, Collaboration, Security, Media services and Network services, we at Tata Communications are envisaging a New World of Communications

Job Description

Job Description: L3 Network Operations Engineer - ACI & Switching

Position Summary:

We are seeking an experienced L3 Network Operations Engineer with expertise in Cisco ACI and Switching technologies to join our dynamic team. In this role, you will be responsible for managing and supporting the Cisco ACI infrastructure, including fabric creation, micro-segmentation, multi-pod setups, and multi-site configurations. You will also be involved in backup and recovery procedures, documentation, and upgrading various components.

 

Responsibilities:

Management of Cisco ACI Infrastructure:

Monitor the health and performance of the Cisco ACI infrastructure, including the ACI fabric, APIC, and associated hardware devices.

Perform configuration management, software updates, and patch management for ACI components.

Identify and resolve faults, perform root cause analysis, and optimize performance.

Manage the hardware lifecycle, including procurement, installation, and decommissioning.

Backup and Recovery:

Implement and maintain backup and recovery procedures to protect and restore critical data in case of a disaster.

Regularly back up essential data and develop a recovery plan for quick execution in the event of data loss.

Test and validate backup and recovery procedures to ensure their effectiveness.

Documentation:

Maintain accurate documentation of the network infrastructure, including configuration settings, security policies, and performance metrics.

Document troubleshooting steps, changes, and incident resolutions to facilitate future reference and knowledge sharing.

Ensure documentation is up to date and accessible to relevant stakeholders.

Micro-segmentation with Cisco ACI:

Implement intra-EPG isolation between pods and create micro-segmentation policies.

Configure uSeg attributes and enable micro-segmentation in the domain.

Design and apply filters, contracts, and policies to enforce network segmentation.

Fabric Creation:

Perform fabric discovery and configure APIC's Integrated Management Controller.

Define and apply pod policies, including syslog configuration and software image management.

Create and configure domains, tenants, application profiles, EPGs, filters, and contracts.

Design and configure north-south L3out connectivity.

Multi-pod Setup:

Provision and configure multi-pod environments.

Establish dynamic tunnels for BD and EPG communication.

Configure pod spine access policies and routed-outside interfaces for EVPN.

Cisco ACI Multi-Site Configuration:

Configure global contracts across tenants or VRFs.

Implement intra-EPG isolation and micro-segmented EPGs.

Backup and restore configurations, upgrade controllers and switch nodes.

Configure sites, infra settings, and CloudSec encryption.

Bridge Domain, Tenant, VRF, Policy, EPG Creation:

Create tenants, VRFs, bridge domains using GUI, CLI, or REST API.

Configure enforced bridge domains, flood encapsulation settings, and ARP settings.

Upgrades:

Review upgrade/downgrade support matrix and architecture for APIC controllers and spine-leaf switches.

Perform pre-upgrade validations and export configurations for backup.

Upgrade APIC, ACI switch firmware using GUI, CLI, or REST API.

Schedule and perform multistep upgrades and downgrades.

Cisco Nexus Dashboard:

Onboard multiple Cisco ACI, Cloud Network Controller, and NDFC/DCNM fabrics as individual sites.

Manage firmware, event analytics, multi-cluster connectivity, and additional physical nodes.

Configure remote authentication server, multi-factor authentication, and security settings.

Upgrade Cisco Integrated Management Controller (CIMC) for Cisco Nexus devices.

 

 

Requirements:

Bachelor's degree in a relevant field or equivalent experience.

8 to 12 years of experience in network operations, with a focus on Cisco ACI and Switching technologies.

In-depth knowledge of ACI fabric management, including APIC, fabric discovery, and software updates.

Experience in troubleshooting traffic flows, routing, and L3 policies within an ACI environment.

Strong understanding of micro-segmentation, multi-pod setups, and multi-site configurations.

Familiarity with backup and recovery procedures for network infrastructure.

Proficient in documenting network configurations, changes, and incident resolutions.

Hands-on experience in upgrading ACI components, including APIC controllers and switches.

Cisco certifications such as CCNP or CCIE in Data Center or equivalent is preferred.

Excellent problem-solving skills, attention to detail, and ability to work independently or as part of a team.

Strong communication and interpersonal skills to collaborate effectively with cross-functional teams.

Skills

network operations, switching, network support, technical support, troubleshooting, cisco aci, documentation