Network Architecture

Thapathali Campus Network Infrastructure & Topology

2 x 1 Gbps
Internet uplinks
31
Coverage Areas
3000
Users Capacity
Full
CCTV coverage
Wired/Wi-Fi User Internet Access with Failover & VPN

Pick a kind of traffic, hover the boxes, and take the primary uplink down to see the failover.

Wi-Fi users31 coverage areasWired userslabs, offices, phonesAccess switchesone per buildingCore switch10 Gbps backboneFirewall / DMZpolicy, NAT, VPNCGNet1 Gbps, primarycarrying trafficNTC FiberNet1 Gbps, secondarystandbyInternetNTC SIPVoIP, IPsecNIC Asia Bankpayments, IPsec

Follow one request: browsing the internet

  1. 1The device joins: DHCP hands out an address and 802.1X places it in the right VLAN.
  2. 2The access switch forwards it up the 10 Gbps backbone to the core.
  3. 3The core routes it to the firewall, which applies policy and NAT.
  4. 4The firewall sees CGNet healthy and sends the traffic out on the primary 1 Gbps link.
  5. 5The request leaves the campus; the reply comes back along the same path.
Original sequence drawing
Wired/Wi-Fi User Internet Access with Failover & VPN
  • Internet uplinks: CGNet 1 Gbps (primary) and NTC FiberNet 1 Gbps (secondary), automatic failover at the firewall
  • Network Switches: a firewall at the edge, one access switch per building, 1 Gbps UTP to every port
  • Building Distribution: Coverage across C-Block, Architecture, EMC, D-Block, Machine Lab, ICT Lab, Canteen, Guard House, Back-ICT, Library
  • Services: CCTV, IP Phone integration, UTP 10Gbps backbone, site-to-site VPN to NTC SIP and NIC Asia Bank
WiFi Infrastructure
Coverage
31 Areas
Capacity
3000 Users
Bandwidth
1 Gbps uplink

Two 1 Gbps fibre uplinks behind the Wi-Fi. Managed AP controller ensures seamless roaming.

Server Infrastructure
Racks
2 server racks
Storage
NAS System
Cooling
AC Enabled

Two server racks in a climate-controlled room with power backup system.

Security Systems
CCTV Type
IP-based NVR
Cameras
Every block and gate
Coverage
Full Campus

IP-based NVR recording with cameras covering every block, gate and corridor of the campus.

ISP Connectivity
Primary
CGNet, 1 Gbps
Secondary
NTC FiberNet, 1 Gbps
Redundancy
Automatic failover

Two symmetric 1 Gbps fibre links from different providers; the firewall moves traffic to the standby link when the primary fails.

Network Equipment
Core Switches
Firewall + per-building access
Backbone
10 Gbps UTP
Access Links
1 Gbps UTP

Enterprise-grade switching infrastructure with high-speed uplinks.

Power & Backup
UPS System
Available
Server Room
Protected
Uptime
99.9%

Redundant power backup ensuring continuous operation of critical systems.

Network Features & Capabilities

User Services

  • Campus-wide WiFi access with secure authentication
  • VLAN segregation for students, staff, VoIP, and CCTV
  • Campus email system (@tcioe.edu.np) for all users
  • QR-based ID card and certificate system
  • Online admission through ERA-SOFT

Technical Infrastructure

  • 10 Gbps backbone with 1 Gbps access links
  • Managed AP controller for seamless WiFi roaming
  • NAS storage system with automated backups
  • VoIP integration with NTC SIP server
  • Site-to-Site VPN for banking services