On the Investigations of Design,Implementation, Performance and Evaluation issues of a Novel BDSIIT Stateless IPv4/IPv6 Translator Hanumanthappa.J.1,Manjaiah.D.H.2,Aravinda.C.V.3 1
Teacher Fellow, Dos in CS, University of Mysore, Manasagangothri, Mysore, INDIA. 2 Reader &Chairman, Mangalore University, Mangalagangothri, Mangalore, INDIA. 3 M.Tech. KSOU. Manasagangotri, Mysore, INDIA.
[email protected] [email protected] [email protected]
Abstract. Today, the Internet consists of native IPv4 (IPv4-only), native IPv6 and both IPv4/IPv6 dual networks. Currently both IPv4 and IPv6 existing protocols are considered as incompatible protocols. Unfortunately IPv4 and IPv6 are incompatible protocols when both the versions are available and the users of internet want to connect without any restrictions, a transition mechanism is required. Since a huge amount of resources have been invested on current IPv4 based Internet, how to smoothly transit the Internet from IPv4 to IPv6 is also a great tremendous and interesting research topic. During the time of migration from IPv4 to IPv6 networks, a number of transition mechanisms have been proposed by IETF to ensure smooth, stepwise and independent changeover. The development of Internet Protocol Version 6(IPv6), in addition to being a fundamental step to support growth of Internet is at the base of the increase IP functionality and Performance. It will enable the deployment of
new applications over the Internet, opening a broad scope of technological development.BD-SIIT is one of the transitional technique which is mentioned in the IETF draft to perform the transition from IPv4/IPv6.We implement the BD-SIIT transition algorithm. The Stateless Internet Protocol/Internet Control Messaging Protocol Translation (SIIT) [RFC2765] is an IPv6 transition mechanism that allows IPv6-only hosts to talk to IPv4-only hosts. The mechanism involves a stateless mapping or bidirectional translation algorithm between IPv4 and IPv6 packet headers as well as between Internet Control Messaging Protocol version 4(ICMPv4) and ICMPv6 messages. SIIT is a stateless IP/ICMP translation, which means that the translator is able to process each conversion individually without any reference to previously translated packets. Most IP header field translations are relatively simple however; there is one issue, namely, how to translate the IP addresses between IPv4 and IPv6 packets. The NS-2 simulator is used to implement the BDSIITmechanism
. I. INTRODUCTION. 1 .Importance of IPv6 based 4G Networks and On-going work. The IPv4/IPv6 transition process always occurs in deploying IPv6 based services crosses the IPv4 Internet. The IETF Next Generation Transition Working Group (NGtrans) has proposed many transition mechanisms to enable the seamless integration of IPv6 facilities into current networks. It also addresses the performances of various tunneling transition mechanisms used in different networks. The effect of these mechanisms on the performance of end-to-end applications is explored using metrics such as transmission latency, throughput, CPU utilization, and packet loss. This synopsis also looks into usage of Internet protocol version 6(IPv6) in one of the network architecture defined by Moby Dick research project. The Moby Dick has more straight forward approach. It takes Physical and Data link layer transmission functionalities of different access network as given exchange all existing all higher-level tasks by fully IPbased mechanisms. The Moby Dick was a three year European Union (EU) information Society Technologies (IST) project finished in December 2003.Project name
Moby Dick has derived from the word “Mobility and Differentiated Services in a Future IP Network”. The main aim of the Moby Dick was to study and test IPv6 based and QoS enabled mobility architecture comprising Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), and wired Local Area networks (LAN) based on Ethernet. The Moby Dick project presents field evaluation results of an IP-based architecture for a 4G “True-IP” network. Moby Dick demonstrated the seamless integration of three disciplines like QoS, AAA and IP Mobility over a heterogeneous network infrastructure focusing on three access technologies (WLAN, Ethernet, and TD-CDMA).The Moby dick architecture incorporates Mobile IPv6, Fast handovers, AAAcontrol (Authentication, Authorization and Accounting).The migration from circuit-switched to IP based technologies and the growing role of mobility pave the way to a next generation Integrated network. The Importance of IP-based communication has already been identified in UMTS as well as in EDGE/IMT-2000 which proves an IP packet service using tunneling mechanisms but still employing access mechanisms of second generation networks.4G networks scenarios IP is used to glue all different link-level
technologies, deploying technology un-aware protocols for mobility or quality of service (QoS).4G architectures should be able, thus, to embrace almost any wireless access technology available. This paper presents the field results obtained in the Moby-Dick architecture, an IP-based 4th Generation(4G)architecture for heterogeneous environments covering UMTS–like TD-CDMA wireless access technology, wireless and Ethernet LAN’s.This is one of the first implemented leader approaches to a 4G network thus a key contribution to this research work. The MIND (Mobile IP based network developments) project which was the follow-up of the BRAIN (Broadband radio access over IP networks) project was focused in mobility aspects, as well as ad-hoc, self-organizing, and meshed networks. The LONG project [ ] on IPv6 transition and deployment issues and Moby dick profited from some of the outcomes of that project. Nevertheless LONG didn’t aim at deploying a native IPv6 4G system, as Moby Dick did. 2. The IPv6 Transition. An IPv6 transition mechanism is a method to connect the hosts/networks using the same or different IP protocols under some specific IPv6 transition environment. The Internet protocol was started in early 1980.In the early s1990’s the Internet was growing some temporary solutions were offered in order to cover the fast growth in number of Internet user’s such as NAT, CIDR.At the Same time IETF began working to develop a new Internet Protocol namely IPv6 which was designed to be a Successor to the IPv4 Protocol. The main reason for designing this new Internet protocol(IPv6) was the need to increase the number of addresses(address spaces).The IPv6 address was designed with a 128-bit address scheme instead of 32-bit scheme in IPv4.So,the number of possible addresses in IPv6 is 3.4X1038 unique addresses.IPv6 will have enough to uniquely address every device (example Tele phone, Cell phone,mp3 player,hosts,routers,bridges etc) on the surface of earth with full end-to-end connectivity(about 32 addresses per square inch of dry land).In addition IPv6 is designed to support IPSec,Scalability,Multimedia transmissions,Security,Routing, Mobility, Real time applications like audio,video,Cryptography techniques like encryption and Decryption, Large address space, Better support for QoS,Stateless and Stateful address configuration, Enhanced support for Mobile IP and Mobile computing devices, Increased number of multicast addresses and improved support for multicast, New protocol for neighboring node interaction, and New header format that is designed to keep header overhead to a minimum etc.Over all IPv6 was carefully thought out designed and was designed with future applications in mind. But the question now is whether it is possible for these two IPv4, IPv6 to work together smoothly and in an easy way? The answer is yes because the IETF IPng Temporary IPv4 address assignment
has proposed several mechanisms to be suitable for both Internet protocols to coexist. Some of the transition mechanisms work by encapsulating IPv6 packets in IPv4 packets then transporting them via an IPv4 network infrastructure and others work by operating dual IPv4/IPv6 stacks on the hosts or edge routers to allow the two versions of IPv4 and IPv6 to work together. Researchers designing new transition mechanisms in order to develop a proper mechanism, to be used in the transition from IPv4 from IPv6 and vice versa which overcomes some of the shortcomings that may appear in some proposed mechanisms. Some of the transition mechanisms work by encapsulating IPv6 packets in IPv4 packets then transporting them via an IPv4 network infrastructure and others work by operating dual IPv4/IPv6 stacks on the hosts or edge routers to allow the two versions of IPv4 and IPv6 to work together. Researchers designing new transition mechanisms in order to develop a proper mechanism, to be used in the transition from IPv4 from IPv6 and vice versa which overcomes some of the shortcomings that may appear in some proposed mechanisms. III. Related Work. 3.1. How the BD-SIIT (Bidirectional Stateless Internet Protocol/Internet control messaging Protocol Translation (SIIT) works. In this paper we proposed a new transition algorithm called BD-SIIT.This is also a new type of transition mechanism. As we Know that SIIT(Stateless Internet Protocol/Internet control messaging Protocol Translation(SIIT) is an IPv6 transition mechanism that allows IPv6 only hosts to talk to IPv4 only hosts. This mechanism contains a Stateless mapping or a bidirectional mapping (bidirectional translation algorithm) between IPv4,IPv6 packet headers as well as ICMPV6 and ICMPv4.Our new proposed BD-SIIT(new transition system) depends on the understanding of the received datagram, capturing the header, Identifying the header, Verification of the header, Transformation of the datagram to the destination environment, and then transmitting the datagram to the destination address.In,fact the proposed system deals with a Bi-directional operation that leads to convert the received datagram to the destination environment, depending on the address mapping ID value generated by DNS46 in order to be used in our proposed transition system between IPv4 and IPv6 protocols [29] [30] [31].BD-SIIT requires the assignment of an IPv4 address to the IPv6-only host, and this IPv4 address is used by the host in forming a special IPv6 address that includes this IPv4 address. The mechanism which is intended to preserve IPv4 address rather than permanently assigning IPv4 addresses to the IPv6 only-hosts. The method of assignment is one of the scope of BD-SIIT and also RFC 2765 also suggests that DHCP is basis for the
.
Fig.1: BD-SIIT Translation process.
The BD-SIIT has been proposed and designed in order to support the Bi-Directional communication sessions to be initiated by an IPv6 node which is located in the native IPv6 network and vice versa. The BD-SIIT Translation algorithm consists of the following two steps. 1. The First component explains V4-V6 Domain name System (DNS46) server that identifies the two public IPv4 and IPv6 Well as header conversion between IPv4 and IPv6 packet headers
addresses statistically or dynamically for each IPv4/IPv6 communicating system. 2. The Second component explain the V4-V6 enabled gateway does the address mapping between an IPv4 and an IPv6 addresses as
3.2. BD-SIIT Data Transmission from Source to Destination (end to end) Process:-
Fig.2: Translation of IPv6 header to IPv4 header.
The Data Packet transmission process for BD-SIIT is clearly defined in Fig.3.The BD-SIIT Translation mainly occurs due to the following four stages 1, 2, 3, and 4. Stage-1: IPv6 Packet Transmission. Stage-2:IPv6-to-IPv4 mapping calculation and Address mapping. Stage-3:IPv6-in-IPv4 Header Translation Stage-4:IPv4 Packet Transmission.
Fig.3: Data Packet Transmission from Source to Destination (End-toEnd).
3.2. An Architecture of BD-SIIT. As mentioned in Fig.1.the BD-SIIT architecture consists of the DNS46(IPv4-IPv6 DNS),the IPv4-IPv6 enabled router, the IPv4 hostnames which are located in the IPv4 zone only, and the IPv6 host names which are located in the IPv6 zone only. The BD-SIIT translation process can perform by using two techniques like (1) directly with in the end system. (2)Within a Network-based device.
Fig.4: Network based BD-SIIT Translation process.
As shown in Fig.4.the BD-SIIT the upper layer protocols like TCP and UDP in transport layer can be passed through the translator relatively unscathed. For ex:-The BD-SIIT translation has been designed such that that TCP and UDP pseudo header checks sums is not affected by the translation process. While using BD-SIIT translation can cause some problems with various applications like FTP and embedded IP address in higher layer protocols and it requires the necessity of addition application specific application layer gateways in the translation process [29].
related with BD-SIIT translator is how to map the IP addresses between IPv4 and IPv6 packets. A. The role of IPv6 mapped address in BD-SIIT Translator. BD-SIIT resides on an IPv6 host and converts an outgoing IPv6 headers into IPv4 headers, and incoming IPv4 headers into IPv6.To perform this operation the IPv6 host must be assigned an IPv4 address either configured on the host, or obtained via a network service left unspecified in RFC 2765.When the IPv6 hosts wants to communicate with an IPv4 host, based on DNS resolution to an IPv4 address, the BD-SIIT algorithm recognizes IPv6 address as an IPv4 mapped-address as shown in Fig.3.The one of the mechanism to translate the resolved IPv4 address into an IPv4 mapped address is provided by Bump-in-the stack(BIS)or Bump-inthe API(BIA) techniques[30].
3.3. Working Procedure of BD-SIIT Transition. As we know that BD-SIIT is a stateless IP/ICMP translation. The BD-SIIT translator is able to process each conversion individually, without any reference to previously translated packets. Although most of the IP header field translations are relatively very simple to handle, however one of the issue 0
79
80
80-Zero bits
Sl.No
95
96
FFFF(16 bits)
32 bits(IPv4 Address)
Fig.5:IPv4-mapped-IPv6 address. Table.1: Address mapping IPv6/IPv4. IPv6 Address IPv4 Address Address mapping value
1
ABC2::4321
195.18.231.17
1
2
ABC2::4321
195.18.231.17
2
3
ABC2::4321
223.15.1.3
37
Sl.No
127
Table.2:DNS46 Corresponding to IPv4 and IPv6. Address IPv6 Address DNS mapping value
IPv4 Address
1
212.17.1.5
----
B
4
2`
223.15.1.3.
1C::DACF
Y
37
Sl.No
Table.3: Address mapping IPv4/IPv6. IPv4 Address IPv6 Address Address mapping value
1
ABC2::4321
1
195.18.231.17 ABC2::4321 2
210.154.76.91
3
223.15.1.3.
2
ABC2::4321
3.4. The BD-SIIT A Novel Transition Address-mapping algorithm for the forward operation. Based on the presence of IPv4-mapped-IPv6 address as the destination IP address the BD-SIIT algorithm performs the .
37
header translation as described in Algorithm-1 and Algorithm-2 to obtain an IPv4 packet for transmission via data link and Physical layers. The Fig.4.shows the Protocol stack view of BD-SIIT
Fig.5: Protocol Stack view of BD-SIIT.
The following steps show the forward operation during the migration from IPv4/IPv6. Algorithm-1:-IPv4->IPv6: Forward operation. 1. When Host X belongs to X-zone initiates a request (Query message) to DNS46 in order to get the IP-address of Host Y which belongs to IPv6 zone. 2. When DNS46 receives a query message as a request then its checks its (Table-2) to identify whether Host Y has an IPv6 address which is unknown for the Host X.The DNS46 knows that the whole IPv6 zone has a public IPv4 address (like NAT method) i.e. 195.18.231.17 address in the destination address field of IPv4 header then forwards it via a network. 3. Simultaneously, the DNS46 sends another message to V4-V6 enabled router in order to update table-3. 4. When the Host X receives requested address of Host Y, immediately creates the IPv4 packet, inserting 195.18.231.17 address in the destination address field of IPv4 header then forwards it via network. 5. When the IPv4 packet is arrived to V4-V6 enabled router, then the router identifies a packet and verifies that a destination
Address is a public address with mapping value 2 that indeed refers ABC2::4321 IPv6 address (as shown in table3).Then the V3-V4 enabled router which updates Table-1 then creates its new IPv6 packet which is based on IPv4 packet, and forwards it to Its destination in IPv6 Zone. 6. When Host Y accepts the packet then it starts to process it successfully without getting any problem.
Algorithm-2:-IPv6->IPv4: Feedback operation. The following steps show the feedback operation from IPv6-IPv4 zone one which is illustrated in Figs.1. And 5. [Note:-Consider Host X as a Client and Host Y as a Server. If the Client A sent a HTTP get command to retrieve a web page from the server Y.].[As shown in Fig.7.steps 1- 6. 1. As a response for the received command from a client X, server Y creates packet(s) then forwards them via a network to the client X using the public IPv6 zone address(ABC2::4321) as a destination address.
2. When V4-V6 enabled router receives a packet which has been sent by Server Y, then it verifies its Table-1,Table3,depending on the addressing mapping value like 37 in our scenario, it refers to 220.12.145.10 as a Sender address in Table-2 and 223.15.1.3 as a destination address in Table-2 instead of instead of 1C:: DACF and ABC2::4321 IPv6 rely. 3. After that, the V4-V6 enabled router creates a new IPv4 packet, based on the accepted IPv6 packet then forwards it to the destination (Client X). 4. When the Client X receives the IPv4 packet, its starts to process successfully without any problem.
Algorithm-3:-BD-SIIT Algorithm of IPv4 header Conversion to IPv6 header conversion. 1. When BD-SIIT allows IPv6 hosts which do not contain permanently, assigned IPv4 address 2. When the IPv6 host tries to communicate with IPv4 host 3. Then BD-SIIT handles the IP address translation between IPv4 and IPv6. 4. If IPv6 address type=0: FFFF: v4 {print “IP address as an IPv4-mapped-IPv6 address”. It is mainly used to mapping IPv4 host addresses to IPv6 addresses.} 5. If the IPv6 address type=0: FFFF: 0:v4 {Print “IP address as an IPv4 translated (compatible) address.}
Fig.6: BD-SIIT, IP Forward address translation, IPv6 to IPv4.
The Fig.6.shows the IP address translation process IPv6 to IPv4 with IPv4-mapped-IPv6 address and an IPv4 translated (compatible) address. The IPv6 host has obtained a temporary address-v4temp-for use in communicating with the IPv4 host. The Fig.6.very briefly illustrates the operation of IP address translation in going from the IPv6 host, using an IPv4 translated address to the IPv4 host. The translation of the remaining field is straight forward with a couple of exceptions. If there is no IPv6 fragment header, the IPv4 header fields are set as follows [31] [32]. Algorithm-4:-BD-SIIT.Algorithm for the Forward Header conversion IPv6->IPv4. If version=4 {proceed to set Internet Header Length=5,} Else if {proceed to set type of service and precedence= by default copied from the IPv6 header traffic class field},
Else if {proceed to set total length=pay load length value from IPv6 header+IPv4 header length.}, Else if {proceed to set Identification=0}, Else if {proceed to set Flags=the more fragments flag is set=0} Else if {proceed to set Don’t Fragment flag=1}, Else if {proceed to set Fragment offset=0}, Else if {proceed to set TTL=Hop limit value copied from IPv6 header - 1.}, Else if {proceed to set Protocol=next header field copied from IPv6 header}, Else if {proceed to set Header Checksum=Compute once IPv4 header has been created. Else if Source IP address=low order 32 bits of IPv6 Source address field (IPv4 translated address field) Else Destination IP address=Low order 32 bits of IPv6 Destination address field (IPv4 mapped address field)}
Fig.7: BD-SIIT, IP Reverse address translation, IPv6 IPv4.
Algorithm-5: BD-SIIT.Algorithm for the Reverse Header conversion IPv4->IPv6.
If version=6{proceed to set version=6} Else if {proceed to set Traffic Class= IPv4 header ToS bits}, Else if {proceed to set Flow label=0},
Else if {proceed to set Pay Load Length=IPv4 header Total length value-(IPv4 header length+IPv4 options}, Else if {proceed to set next header =IPv4 header protocol field value} Else if {proceed to set hop limit=IPv4 TTL field value-1},
Else if {proceed to set Fragment offset=0}, Else if {proceed to set source address =0:0:0:0: FFFF: /80.Concatenated with IPv4 header source IP address}, Destination IP address=0:0:0:0:0: FFFF: /96 concatenated with IPv4 header destination address.}[31][32]
Fig.8: BD-SIIT hosts connection IPv6-IPv4 operation using TCP Protocol. --------(1)
IV. Implementation & Performance Metrics. Where Thrj=
We implemented our proposed BD-SIIT translation system and tested it by varying the number of packets sent as well as the transmission rate for each communication system. We have tested comparison between EED(end-enddelay)of IPv4-IPV4 and IPv6-IPv6 communication session, A Comparison between the throughput(v4-to-v4 , and v6-to-v6) communication sessions, Round trip time(RTT) for each data packet of varying sizes, DNS response time, the total transmission time with TCP and UDP Protocols. In this paper we are mainly measured two important metrics like throughput and End–to End delay for BD-SIIT.
------------ (2)
Where Thrj is the value of the throughput when the packet j is received at intermediate device like DSTM gateway, BDSIIT Gateway, v4/v6 Router and N is the number of received packets at intermediate device, Pr is the no of packets. At intermediate device and Pg is the number of packets created by source host. 2. End-to-End Delay (EED) As we know that to calculate the performance evaluation of various novel transition mechanisms EED plays an important role. The mean EED for a sequence of packets of specific size is calculated as follows. -------(3) Where as EEDk=Tdk-Tsk-----(4)
Throughput: We calculated the throughput performance metric in order to identify the rate of received and processed data at the intermediate device (router or gateway)during the simulation period. The mean throughput for a sequence of packets of specific size is calculated by using equations 1 and 2.
Where EEDk is the End-to-End delay of packet “k”, Tsk is the generated time of packet “k” at source workstation and Tdk is the received time of the packet “k” at the destination workstation, Nr is the total number of received packets at the destination workstation and Mean EED.
4.1. Simulation Results and Discussions. measurements using ns-2 simulation environment when each The following table (Table-1)shows the simulation packet arrival follows a Poisson process with rate =2 parameters, which are used to calculate the performance .Table-4: Simulation parameters. Sl.No
Simulation parameters.
Value
1
Buffer Size
500 Packets.
2
Propagation delay
10ms
3
Payload Size
200 Bytes
4
Very traffic Loads
6~240 Nodes.
5
Queue Management Scheme
Drop tail
Scenario-1–The simulation results for scenario one present in the EED and throughput result when a direct link connection between either IPv4 workstations in IPv4 only network or IPv6
workstations in IPv6 network is conducted through IPv4/IPv6 router. The results are illustrated in Fig.9.andFig.10.
Fig.9: The comparison between EED of v4-to-v4 and v6-to-v6 communication sessions.
From Fig.9.the simulation results shows that the v4-tov4 EED is definitely less than v6-to-v6 EED.In fact there may be so many reasons which explains why this happens. The first reason is the difference between IPv6 header (40 Bytes) and the IPv4 header (20 Bytes) and it causes more traffic overhead especially when the IP packet payload is small. The Second reason is the size of IP packet payload is fixed, in all communication sessions, this means no fragmentation process is needed, which leads to reduce the benefit from the IPv6 feature that allows the fragmentation and defragmentation processes to be performed by only
source and destination hosts compared with the IPv4 that allows these processes to be performed by all the Intermediate devices, which fall between the source and destination hosts. The Fig.9.also shows that the difference between the v4-to-v4 EED and v6-to-v6 EED results is very small and the differences increases when the number of connected workstations increases as well. The v6-to-v6 EED is suddenly increases because of network congestion and when the number of connected nodes becomes more i.e. greater than 200.On the other hand the following Fig.10. Shows a Comparison between the v4-to-v4 and v6to-v6 throughput results.
Fig.10: A Comparison between the throughput (v4-to-v4, and v6-to-v6) communication sessions.
between the two end systems which are located the two heterogeneous networks. The DNS Response time can be calculated by using the equation (1)
4.2. DNS Response Time:The DNS Response Time (DNSRT) metric shows that the time needed to calculate, the communication session
7. J.Wiljakka(ed.,)“Analysis on IPv6 transition in networks”,draft-ietf-v6ops-3gpp-analysis- 04.txt,Internet work in progress
Where Transtime = Transmission time of a Packet is the link number between the two nodes, and Proctime = Processing time, j is the node number and M is the total number of nodes. V. Conclusions. In this paper we have proposed our novel BD-SIIT Transition mechanism. The Simulation results shows the impact of the translation process, that contains performing of address mapping as well as the header translation process which are needed for each incoming and outgoing packet to and from the BD-SIIT translator. The BD-SIIT novel transition concentrated on identifying, determining, translating and forwarding packets between the two different network environments (IPv6 and IPv4 zones).Our proposed new BD-SIIT reduces the size of packet compared with the encapsulation method in the tunneling algorithm. VI. References. 1. Hanumanthappa.J.,Manjaiah.D.H.,”IPv6 and IPv4 Threat reviews with Automatic Tunneling and Configuration Tunneling Considerations Transitional Model: A Case Study for University of Mysore Network”, International Journal of Computer Science and Information(IJCSIS)Vol.3.,No.1,July-2009,ISSN 1947-5500,Paper ID: 12060915]
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Transition
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1.txt,april,2004,http://www.dstm.info.
Mr.Hanumanthappa. J. is Lecturer at the DoS in CS,University of Mysore, Manasagangothri, Mysore-06 and currently pursuing Ph.D in Computer Science and Engineering, from Mangalore University under the supervision of Dr.Manjaiah.D.H on entitled “Design and Implementation of IPv6 Transition Technologies for University of Mysore Network (6TTUoM)”. His teaching and Research interests include Computer Networks,Wireless and Sensor Networks, Mobile AdHoc Networks, Intrusion detection System, Network Security and Cryptography,Internet Protocols,Mobile
and Client Server Computing,Traffic management,Quality of Service, RFID,Bluetooth,Unix internals, Linux internal, Kernel Programming,Object Oriented Analysis and Design etc.His most recent research focus is in the areas of Internet Protocols and their applications.He received his Bachelor of Engineering Degree in Computer Science and Engineering from University B.D.T College of Engineering,Davanagere,Karnataka(S),India(C),Kuve mpu University,Shimoga in the year 1998 and Master of Technology in CS&Engineering from NITK Surathkal,Karnataka(S ),India (C) in the year 2003.He has been associated as a faculty of the Department of Studies in Computer Science since 2004.He has worked as lecturer at SIR.M.V.I.T,Y.D.I.T,S.V.I.T,of Bangalore. He has guided about 250 Project thesis for BE,B.Tech,M.Tech,MCA,MSc/MS.He has Published about 15 technical articles in International ,and National Peer reviewed conferences. He is a Life member of CSI, ISTE,AMIE,IAENG,Embedded networking group of TIFAC–CORE in Network Engineering,ACM,Computer Science Teachers Association(CSTA),ISOC,IANA,IETF,IAB,IRTG,etc. He is also a BOE Member of all the Universities of Karnataka,INDIA.He has also visited Republic of China as a Visiting Faculty of HUANG HUAI University of ZHUMADIAN,Central China, to teach Computer Science Subjects like OS and System Software and Software Engineering,Object Oriented Programming With C++,Multimedia Computing for B.Tech Students. in the year 2008.He has also visited Thailand and Hong Kong as a Tourist. Dr.Manjaiah.D.H D.H. is currently Reader and Chairman of BoS in both UG/PG in the Computer Science at Dept.of Computer Science,Mangalore University, and Mangalore.He is also the BoE Member of all Universities of Karnataka and other reputed universities in India.He received Ph.D degree from University of Mangalore, M.Tech. from NITK,Surathkal and B.E.,from Mysore University.Dr.Manjaiah.D.H D.H has an extensive academic,Industry and Research experience.He has worked at many technical bodies like IAENG,WASET,ISOC,CSI,ISTE,and ACS. He has authored more than -25 research papers in international conferences and reputed journals. He is the recipient of the several talks for his area of interest in many public occasions. He is an expert committee member of an
AICTE and various technical bodies. He had written Kannada text book,with an entitled, ”COMPUTER PARICHAYA” ,for the benefits of all teaching and Students Community of Karnataka.Dr.Manjaiah D.H’s areas interest are Computer Networking & Sensor Networks, Mobile Communication, Operations Research, E-commerce, Internet Technology and Web Programming Aravinda.C.V.,currently pursuing M.Tech(I.T) K.S.O.U., Manasagangotri, Mysore-06.He received M.Sc ., M.Phil in Computer Science.He has worked as a Lecturer in the following institutions. 1.CIST, Manasagangotri,Mysore, 2.Vidya Vikas Institute of Engg and Technology,Mysore. 3.Govt First Grade college,Srirangapatna and Kollegal. He has published two papers in National Conference hosted by NITK,Surathkal,Mangalore.
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