Networking(SD WAN)

Technologies: Cisco Catalyst, Cisco Nexus, Aruba & Cisco WLCs, Aruba/Cisco Client, Aruba SilverPeak EdgeConnect SD WAN


Role Summary
L2 engineer responsible for operational support across enterprise Switching, Wireless Controllers/Client, and Aruba SilverPeak SD WAN, Firewalls[Check Point] Owns P1/P2 incidents, performs advanced troubleshooting, drives RCA, executes complex changes, and ensures stability of the entire network stack.

Responsibilities
1. Switching (Cisco Catalyst & Aruba CX)
• Troubleshoot L2/L3 switching issues: STP/RSTP/MST, loops, LACP/port channel failures, interface flaps, err disable, MAC/ARP issues.
• Implement & validate changes: VLAN/SVI, ACLs, routing policies, QoS, HSRP/VRRP, IP SLA tracking.
• Troubleshoot routing issues in OSPF and BGP connected to WAN/SD WAN edges.
• Perform switch upgrades, patching, and golden config compliance.
• Troubleshoot PoE/UPoE for Access Points and critical devices.

2. Wireless — Controllers & Access Points (Aruba + Cisco)
• L2 ownership of WLC/AP issues:
o 802.1X authentication failures
o DHCP/DNS issues
o Roaming & sticky clients
o RF interference, coverage, capacity
• Manage Aruba Mobility Controllers, Aruba Central/AirWave
• Perform wireless QoS tuning & client flow analysis.


3. SD WAN — Aruba SilverPeak EdgeConnect
• Troubleshoot SD WAN tunnels: blackouts, brownouts, SLA probe failures (loss/jitter/latency).
• Manage Unity Orchestrator:
o Overlays/Segments/VRFs
o QoS & bandwidth shaping
o Health/SLA monitoring
• Provision sites: ZTP, template management, staged image/firmware upgrades.
• Routing/security: BGP/OSPF, cloud/DC routing.
• Path conditioning: FEC, Packet Order Correction, jitter buffering.
• Perform RCA using flows, packet captures, logs, performance stats.

4. ITIL & Operational Duties
• Handle escalated P1/P2 incidents, support incident bridges, and provide technical updates.
• Work with carriers for WAN circuit issues (MPLS/Internet) and manage vendor escalations.
• Maintain configuration backups, compliance checks, and change governance.
Must Have Technical Skills
• Strong CLI: Cisco
• Deep WLAN experience: Aruba Central, Cisco 9800
• Advanced SD WAN troubleshooting: Aruba SilverPeak EdgeConnect + Orchestrator
• Protocols: STP, OSPF, BGP, VRRP/HSRP, QoS