Mesh type WAN + LAN connectivity

calvesnorthNetworking and Communications

Oct 24, 2013 (3 years and 7 months ago)


Mesh type WAN + LAN connectivity
Client: An Hospital attached to Army Command in a Eastern state

Customer's requirement:
• The customer wanted to establish WAN connectivity
between 3 locations and establish LAN connectivity for
120~130 nodes that are spread across two buildings.
• The IP based interconnectivity would be primarily used for
Telemedicine software and for diagnosis of patients
remotely by Expert doctors.
• The required connectivity needed to be from the Central
location to the branch locations. The branch locations also
needed to be interconnected.
• The bandwidth required for the connectivity was 2 Mbps or 128 Kbps.
• The connectivity needed to be always-on and the customer preferred auto ISDN back-up
connectivity, in case the primary line failed.
• The customer required SNMP Management option in the devices.
• The performance level required for the switches was 100 Mbps.
• The customer was keen on Layer 2 and Layer 3 Managed Switches.
• Each building had around 60~70 nodes. One server was available in each building.
• The customer preferred optical fiber backbone connectivity between the two buildings.
The distance between the two buildings was 500m.
• The connectivity speed required between the switches and the server was 1000 Mbps.
• Both data and Voice needed to be terminated in each location.
• The customer preferred provision for connecting more locations in future.
Summary of Dax solution:
Dax recommended IP based interconnectivity solution for application running on Telemedicine
software and diagnosing patients remotely by Expert doctors.
LAN Connectivity:
At each building, Dax recommended structured cabling network with 3 nos of 24-Port 10/100
Mbps stackable switches for connecting 60~70 nodes at 100 Mbps speed and expansion slots for
terminating fiber connectivity and connecting the servers at 1000 Mbps. For backbone
connectivity, Dax recommended 8-port all Giga Layer 3 managed switch for server connectivity
and fiber termination. The connectivity between the switches and servers was of 1000 Mbps
speed. High-speed 64/32 Gigabit server cards were recommended to realize gigabit
WAN Connectivity:
At the central location, Dax recommended the customer to opt for Modular Aggregation WAN
Router with multi WAN slots, which provides connectivity to the branch locations at a speed of
2Mbps and also having provision for auto ISDN backup.
At the other locations, Dax recommended the customer to opt for Modular Access WAN router
to provide leased line connectivity to the Central location as well as adjacent branch location
with auto ISDN backup.
WAN Connectivity:

LAN Connectivity:

Details of Dax solution:
LAN Connectivity:
Dax recommended structured cabling network with 3 nos of DAX Megastack in each building,
which has 24 # ports each connecting at a speed of 10/100 Mbps Speed. Dax Mega stack has 2
expansion optional slots for Gigabit Fiber & Copper Modules, 100 FX Fiber Modules and Stacking
Dax Megastack supports enhanced features including VLAN, port trunking and Queuing, which
improves network performance through effective segmenting and traffic prioritization for PCs
running mission critical applications.
A cluster of up to 8 switches spread across the network can be managed as a single IP entity.
The switch management is not limited by the traditional stack policy, where the switches have
to be in proximity to each other.
Building 1:
Dax Megastack in turn was recommended to get connected to DX

8 port Layer 3 All
Giga backbone switch supporting 4 nos of fixed 1000 Base-T ports and 4 open slots for a choice
between 1000SX, 1000LX & 1000T Modules as per the user's needs. The building was designed to
get connected to adjacent building through Multimode fiber backbone connectivity and the
fibre connectivity terminated in the DX-5744GS by loading 1000SX module in the available open
The server was recommended to be connected to the 1000Base-T ports of DX5744GS switch.
DX2064T, high speed 64/32 gigabit server card was recommended to realize gigabit
connectivity between the server and switch.
Building 2:
The Multimode fiber connectivity was recommended to be terminated in the available gigabit
slots of the Megastack switch.
WAN Connectivity:
At the Central location, Dax recommended Dax Maipu DXMP-1761 Modular Aggregation WAN
Router, which has 4 Network Module slots and 1 # fixed 10/100 Mbps Ethernet Port.
One slot of the DXMP-1761 router was recommended to be loaded with 4-port Sync/Async
module to provide connectivity to the 2 Branch locations. The second slot was recommended to
be loaded with 4-port BRI U ISDN module to provide auto ISDN backup to the said 2 locations
simultaneously, in case the primary leased line fails.
The free slots can be used as and when requirements arise in future, by just loading the
appropriate modules. The Router supports a host of WAN modules including Sync/Async
module, ISDN module, Fast Ethernet Module, Channelized E1 module etc. The (2 port)
Channelized E1 module supports CE1 line on one port and ISDN PRI line on the other, which is
not present in most popular routers.
For the branch locations, Dax recommended Dax Maipu DXMP- 1700 Modular access WAN router,
which has 4 WAN slots. The first two WAN slots of the router were recommended to be loaded
with 2 # one port sync/Async module to provide connectivity to the Central location and
adjacent branch location. The third WAN slot of the router was recommended to be loaded
with one port ISDN BRI S/T module to provide auto ISDN backup to the central location, in case
the primary line fails.
For terminating the leased line at each location, Dax suggested the customer to opt for Leased
line Modems (a pair of 64 Kbps modems consisting of V.35 interface and G.703 interface units).
Highlights of the solution:
Highlights of WAN Connectivity:
DXMP-1761 Modular Aggregation WAN Router has free slots, which can be used in future by just
loading appropriate modules. Thus, the user can realize the scalability of WAN connectivity.
The connectivity from the central locations to the all the branch locations is through a leased
line link with an auto ISDN backup. If the leased line fails, the back-up would automatically
initiate the connection and maintain the uptime. When the leased line is restored, the ISDN
backup connection will disconnect automatically.
Support for Industry Standard Routing Protocols:
Dax Maipu routers support Industry standard LAN/WAN Protocols such as Default Gateway,
Static Route , RIP V1/V2, OSPF, BGP , DDR, IGRP etc, thereby ensuring interoperability with
other vendor products.
Management option:
Dax Maipu routers support SNMP. Hence, the customer can manage all these devices from any
industry standard NMS software .
Dax Maipu routers support standard compatibility for flawless interoperability. Its modular
design supports various interfaces that guarantee easy upgradeability and scalability. It's
feature-rich routing make DAX Maipu routers versatile, effective platform for any routing
Dax Maipu routers support a robust Command Line Interface that complies with the defacto
industry standard, saving potential huge training costs.
Supports High Throughput:
DXMP-1761 Modular Aggregation WAN router supports RISC based MPC8240@ 200 MHz with
68Kpps throughput. Robust design for throughput up to 68Kpps makes the router ideal for
central site applications, where high port density and high throughput is required.
Operating system Platform Independency:
Dax Maipu routers are operating system independent and PC / Server independent. Router
function is based on IP protocol. Thus, when the customer changes their operating system
platform, all WAN connectivity devices would function normally with out the need for change in
the configuration.
In-built Security Mechanisms:
DXMP-1761 and DXMP-1700 routers allow end-to-end secured VPN option for activating L2TP,
Ipsec and GRE (Product code: DX-IPSEC-SW).
Highlights of LAN Connectivity:
Zero configurations required for setting up the switch:
All ports in the switch support auto detection of 10 Mbps or 100 Mbps speed depending on the
configuration. In addition, the ports support Auto MDI/MDIX, with which the switch can
automatically recognize if the port is connected to a network node or cascaded to a switch and
connect accordingly.
Effective network traffic regulation:
By implementing VLAN in Dax Megastack and DX5744GS Switches, the broadcast traffic is
restricted to specified workgroup. As a result, the broadcast traffic of a single segment does
not reach another segment. This reduces the collision between domains and the network traffic
gets regulated. Dax Megastack supports up to 128 VLAN groups. DX-5744GS support up to 256
VLANs, with GVRP for dynamic VLAN registration.
Comprehensive Cluster management:
With support for Cluster management in Dax Megastack, up to 8 switches in a stack (or
cascaded) is viewed as a single IP entity, enabling VLAN grouping and redundant links
configuration between the switches from any web browser
In-built Routing Function in the Dax Mega Stack Switches:
Software routing component is integrated in DAX Megastack as a standard offering. With this,
the user has the choice of segmenting the network based on IP address as well, which is not
otherwise possible in a plain Layer 2 switch. Supported IP routing protocols include RIP1, RIP2
as well as Static Routing.
Dax DX-5744GS has layer 3 management features, which offers several routing protocols such as
RIP, RIP2 and DVMRP and OSPF, ensuring effective segmentation of the network based on IP
Support for Management:
Dax Megastack and DX-5744GS provide SNMP Management features with default MIB2, Bridge
MIB, Ethernet MIB and RMON MIB, allowing management from any industry Standard NMS
software. Dax switches also support web browser based configuration.
Operating System Independency:
Dax switches are operating system independent and PC / Server independent. Thus, when the
user changes their operating system platform, all LAN connectivity devices would function
normally without the need for change in the configuration.
Versatile Uplink options:
Dax Megastack switches have 2 open slots for a combination of 100fx or Gigabit uplink modules.
The user can choose 2 100fx uplink ports or 2 # Gigabit uplink ports over either copper or Fibre.
The user also has the choice of installing 1# 100FX uplink port, 1 Gigabit Uplink port. Thus,
when the user want to upgrade the connectivity speed, can use the same switch by loading
appropriate stack modules and is not bounded by fixed configuration uplink modules.
Megastack is easily scalable to include additional nodes by simply cascading /stacking another
switch to it. Thus, in future network expansion is hassle free without any change in the existing
set up.
Support for Jumbo Frame packet in DX 5744GS:
DX-5744GS supports Jumbo frames. Jumbo Frames are Ethernet frames, which are larger than
1518 bytes that can be used to reduce server CPU utilization and improve wire efficiency of the
entire network. By putting more data in fewer packets, Jumbo Frames can increase throughput
and decrease CPU utilization, resulting in improved network performance.
Highlights of the Dax DX-2064T Gigabit Ethernet Card
Support for VLAN and QOS in Giga Ethernet Cards:
DX-2064T Giga Ethernet Card supports VLAN functions when connected to a VLAN of the DX-
5744GS Switch. Thus, the customer gets additional security through port based VLAN available
through the switch and MAC based VLAN available through DX-2064T Ethernet cards.
Support for 802.1q Priority Queuing in Giga Ethernet Cards:
Dax DX-2064T supports Priority queuing feature when connected to the DX-5744GS switch
supporting 802.1q QOS features for more effective and appropriate bandwidth. This is useful
for nodes, which run time sensitive applications requiring bandwidth at specific time intervals
such as Video conferencing, Voice chat etc.
Support for Load Balancing in Gigabit Ethernet Card:
DX-2064T supports load-balancing feature. Two cards can be installed in a server and
connected to a switch, which supports link aggregation. In a network, the Server is the most
bandwidth hungry component. In order to make sure that the Server has the maximum
bandwidth and can process more network requests, the server can be loaded with 2 # Gigabit
cards and the traffic to the server would be handled by both the cards. For both the cards to
share the load, it requires special Driver software, which is provided.
Support for Fault Tolerance:
DX-2064T supports Fault Tolerance feature. Two cards can be installed in a server and
connected to a switch, which supports link aggregation. In a network, the Server is the most
critical component. In order to make sure that the Server link is always on and to reduce any
link failure, the server can be installed with two Gigabit cards. Thus, the server will be
connecting to switch
through Dual link. Even if One NIC fails or if one link fails, the secondary card / link will take
over. Thus, a fault tolerant design can be established with DX-2064T cards .
Support for Jumbo Frames:
DX-2064T supports Jumbo frames. Jumbo Frames are Ethernet frames, which are larger than
1518 bytes that can be used to reduce server CPU utilization and improve wire efficiency of the
entire network. By putting more data in fewer packets, Jumbo Frames can increase throughput
and decrease CPU utilization, resulting in improved network performance .
Highlights of Ecat-5 Cabling Solutions:
Guaranteed performance:
The proposed solution provides guaranteed performance in compliance with the most
demanding LAN applications like ATM 155, 622 Mbps and Gigabit Ethernet.
High-speed data transmission:
Dax Oryx structured cabling products provide high-speed network applications like voice, video
and high-speed data transmission at frequency, exceeding EIA/TIA 568-A and IEC 11801
specifications. Dax Ecat-5 Cabling system can support Parallel Transmission (Duplex & Half
Duplex) for High Speed Network.
Dax Ecat-5 Cabling System has more headroom (14.5db) and exceeds EIA/TIA specifications by
wide margin, thereby supporting Ultra High Speed Networks such as Gigabit Ethernet (1000base
Dax Ecat-5 Cabling system is backward Compatible with Cat-5 cabling system, with enhanced
Dax Ecat-5 Cables are tested upto 350 MHz, exceeding EIA/TIA test frequency by two and half
times more, thereby ensuring error free performance.
Dax offers comprehensive 20 years Warranty for end-to-end Dax Ecat-5 cabling system. The
warranty covers compatibility issues as well as manufacturing defects. Dax would readily
replace such cabling products found defective as per the terms defined.
Highlights of Fiber connectivity:
Supports high reliability:
Dax Oryx Fiber Patch Cords and Pigtails assemblies are of the highest quality available. They
are Installed and tested in factory to international standards. Hence ensures high reliability and
provides low insertion.
Standard or Custom configurations are available. Various lengths and connector types are also
available. All ferrules are of a high-quality ceramic, thereby providing very little loss to the
optical signal when used in any configuration.
Optical Fiber Patch Cords & Pigtails are available with Multimode 62.5/125 um, 50/125 um or
Singlemode fiber, in a variety of lengths and connector types.

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