Network Engineer – Data Center LAN (DCLAN)

Avensys Consulting Pte Ltd; Pasay; Presencial; PHP 600.000 - 900.000; Jornada completa

Descripción de la vacante

Avensys Consulting Pte Ltd is seeking an experienced Network Engineer – Data Center LAN (DCLAN) to design, configure, and troubleshoot enterprise data center networks, focusing on Cisco routing and switching, ToR/EoR, and Leaf-Spine fabrics.

You will manage VLANs, STP, Port-Channel/LACP, OSPF/BGP, and provide incident response, change control, and documentation. This on-site role is based in Metro Manila, Pasay.

Formación

• Strong hands-on experience with data center networking.
• Cisco routing and switching expertise.
• Knowledge of ToR and EoR switching, leaf-spine fabrics.
• Experience with OSPF and BGP routing protocols.
• Ability to troubleshoot complex connectivity issues in production environments.

Responsabilidades

• Design, configure, maintain, and troubleshoot Data Center LAN (DCLAN) infrastructure.
• Configure and support Cisco switches, routers, and data center networking equipment.
• Manage VLANs, trunking, access ports, Layer 2/Layer 3 switching, and inter-VLAN routing.
• Support ToR, EoR, and Leaf-Spine architectures.
• Configure and troubleshoot Port-Channel/EtherChannel and LACP.
• Support routing protocols including OSPF and BGP, plus static/default routing.
• Implement and troubleshoot STP, HSRP/VRRP, ACLs, and network segmentation.

Conocimientos

Networking fundamentals

Cisco CLI

Troubleshooting

Leaf-Spine knowledge

Herramientas

Cisco IOS

LACP

VLAN control

Descripción del empleo

We are looking for an experienced Network Engineer – Data Center LAN (DCLAN) to support, maintain, troubleshoot, and optimize enterprise data center network infrastructure. The role will focus on Cisco-based routing and switching, Data Center LAN environments, high availability, network troubleshooting, and operational support. The ideal candidate should have strong hands‑on experience with data center networking technologies and be comfortable troubleshooting complex connectivity issues in a production environment. Experience with Top‑of‑Rack (ToR), Leaf-Spine architectures, VLANs, STP, Port-Channel/LACP, OSPF, BGP, and data center network fabrics is highly preferred.

Responsibilities

• Design, configure, maintain, and troubleshoot Data Center LAN (DCLAN) infrastructure.
• Configure and support Cisco switches, routers, and data center networking equipment.
• Manage VLANs, trunking, access ports, Layer 2/Layer 3 switching, and inter‑VLAN routing.
• Support Top‑of‑Rack (ToR), End‑of‑Row (EoR), and Leaf‑Spine data center architectures.
• Configure and troubleshoot Port‑Channel/EtherChannel and LACP.
• Support routing protocols including OSPF and BGP, as well as static and default routing.
• Implement and troubleshoot STP, HSRP/VRRP, ACLs, and network segmentation.
• Monitor network health and proactively identify performance, connectivity, and capacity issues.
• Troubleshoot network incidents involving VLANs, trunks, routing, interfaces, gateways, packet loss, and network loops.
• Investigate interface errors, CRC errors, STP changes, broadcast storms, utilization issues, and other network abnormalities.
• Perform rack connectivity troubleshooting, including ToR switches, uplinks, port‑channels, and upstream connectivity.
• Support data center migrations, network upgrades, hardware replacement, rack‑and‑stack activities, and infrastructure changes.
• Execute network changes following established change management, risk assessment, and rollback procedures.
• Participate in incident management and provide technical support during P1/P2 network incidents and outages.
• Perform network device configuration, firmware upgrades, and maintenance with minimal service disruption.
• Maintain accurate network documentation, configurations, diagrams, and operational procedures.
• Collaborate with infrastructure, security, systems, application, and geographically distributed network teams.
• Identify opportunities for network automation and operational efficiency.
• Provide knowledge transfer and technical guidance to other network engineering and operations teams.

Required Skills

• Strong understanding of OSI Model, TCP/IP, TCP/UDP, ARP, IP addressing, subnetting, MAC addresses, and network protocols.
• Strong understanding of Layer 2 and Layer 3 networking.
• Hands‑on experience with VLANs, access ports, trunk ports, and broadcast domains.
• Strong knowledge of Spanning Tree Protocol (STP).

Data Center Networking

• Hands‑on experience supporting Data Center LAN environments.
• Knowledge of Top‑of‑Rack (ToR) and End‑of‑Row (EoR) switching.
• Understanding of Leaf‑Spine architecture and data center network fabrics.
• Experience with East‑West and North‑South traffic flows.
• Hands‑on knowledge of Port‑Channel/EtherChannel and LACP.
• Understanding of MTU considerations in data center environments.
• Knowledge of VXLAN/EVPN is highly preferred.
• Understanding of Anycast Gateway and ECMP is an advantage.

Routing & Switching

• Strong hands‑on experience with Cisco routing and switching.
• Experience with:
• OSPF
• BGP
• Static and default routing
• Inter‑VLAN routing
• HSRP / VRRP
• ACLs
• NAT
• STP
• VLAN and trunk configuration
• Strong troubleshooting skills across Layer 2 and Layer 3 environments.

Network Troubleshooting

Ability to systematically troubleshoot issues such as:

• Inter‑VLAN connectivity problems
• VLAN and trunk mismatches
• STP blocking or network loops
• Interface and CRC errors
• Speed/duplex issues
• Packet loss and intermittent connectivity
• Broadcast storms
• Routing and gateway issues
• ACL and firewall‑related connectivity problems
• Rack‑level or ToR connectivity outages

Hands‑on experience using Cisco CLI and network troubleshooting commands such as:

• show ip interface brief
• show interface status
• show vlan
• show mac address-table
• show spanning-tree
• show port‑channel summary
• show arp
• show running-config
• show log
• ping
• traceroute

Candidates should be able to interpret command output and use the appropriate commands to isolate network issues.

Preferred Skills

Advanced Networking Knowledge

Knowledge or hands‑on experience with the following is highly desirable: