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RESPONSE TIME IMPROVEMENT ON ONE TIME PASSWORD

RESPONSE TIME IMPROVEMENT ON ONE TIME PASSWORD

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RESPONSE TIME IMPROVEMENT ON ONE TIME PASSWORD

Chapter One: Introduction 1.1 Background
The Ahmadu Bello University Campus Network Infrastructure uses fibre optic technology for transmission and follows the Cisco standard hierarchical design for campus networks (core, distribution, and access layers), ensuring high speed and redundancy.

The network is constructed on Cisco technology using high-end equipment such as the Cisco Catalyst 6500 series core switch, 4500, 3700, and 3560 series distribution switches, and 2960 and gigabit small business series access switches.

This arrangement provides gigabit transmission to all network hosts. The network connects all campuses of ABU Zaria, including Samaru, Kongo, Shika, and NAPRI, by nearly 60km of optical fibre cable.

Figure 1.1 depicts the core network, which utilises Virtual Switching System technology and ether channel technology to increase bandwidth capacity. The core network includes all servers, including the authentication server.

The Cisco 3750G Layer 3 switches are used for distribution, with fibre links connecting distribution points to the core network and point-to-point nodes with static addresses.

The dynamic routing protocol, Open Shortest Path First (OSPF), is enabled. Each distribution switch serves as an OSPF Area Border Router (ABR) for separate regions.

The distributions also host each access layer switch’s virtual local area network (VLAN).
The access layer, primarily made up of Small Business Series and 2960 series switches, utilises Layer 2 switching technology. Access layer devices can access Dynamic Host Configuration Protocol (DHCP) services via the distribution switch to which they are attached.
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Figure 1.1 shows the Core Physical Connectivity Diagram. (Abu Network, 2012).

The core network, shown in Fig. 1.1, offers high-speed access to the distribution network, with most links capable of up to 10 Gbps. The core hosts the network’s servers, including the authentication server. If the core fails, most network services will be unavailable.
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Catalyst 6500SERIES Catalyst 6500SERIES

Catalyst 3750 Series: Mode, System, RPS, Master, Stat, Duplex, Speed, and Stack.

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Catalyst 3750 Series: Mode, System, RPS, Master, Stat, Duplex, Speed, and Stack.

1 2 3 4 5 6 7 8 9 10 11 12 Mode Stack Speed

Duplicate, Stat, Manager, RPS, and System.

Catalyst 3750 Series

1X 2X 15X 16X

11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 17X 18X 31X 32X 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 33X 34X 47X 48X 43 44 45 46 47 48.
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Catalyst 3750 Series: Mode, System, RPS, Master, Stat, Duplex, Speed, and Stack.

Catalyst 3750 Series:

Mode,

System

RPS

Master

Stat

Duplex

Speed

 

Stack.

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Catalyst 3750 Series:

Mode, System

RPS, Master

Stat, Duplex

Speed

and Stack.

Catalyst 3750 SERIES: – MODE – SYSTEM – RPS – MASTR – STAT – DUPLX – SPEED – STACK
Catalyst 3750 Series: Mode, System, RPS, Master, Stat, Duplex, Speed, and Stack.

1 2 3 4 5 6 7 8 9 10 11 12

Catalyst 3750 SERIES: MODE SYST RPS MASTR STAT DUPLX SPEED STACK 1 2 3 4 5 6 7 8 9 10 11 12

Catalyst 3750 Series: MODE, SYSTEM, RPS, and MASTR

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