CRHA: An Efficient HA Revitalization to Sustain Binding Information of Home Agent in MIPv6 Network
Home agents (HAs) maintain the binding information of mobile node (MN). The binding cache of HA stores the associated data of MN. It represents a single point of failure in Mobile IPv6 networks. An efficient fault-tolerant method is essential to defend th
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Abstract Home agents (HAs) maintain the binding information of mobile node (MN). The binding cache of HA stores the associated data of MN. It represents a single point of failure in Mobile IPv6 networks. An efficient fault-tolerant method is essential to defend these information without any loss. This paper focuses on the revitalization of HA at the time of failure. The standby HAs are formed as clusters within the redundant HA set. Every home agent synchronize its bindings to the next highest preference value home agent. In this paper, we propose clustered redundant home agent (CRHA) protocol to maintain the binding association within the cluster. The simulation results show that our approach is better than the existing recovery schemes.
Keywords MIPv6 Faulttolerance Homeagent Bindingupdate Preferencevalue
1 Introduction In MIPv6 network, when the Mobile node (MN) gets away from the home and changes its point of attachment to the Internet, home agents (HA) maintain current location (IP address) information of MN [1]. Correspondent node (CN) is the A. A. Diana (&) V. Ragavinodhini K. Sundarakantham S. M. Shalinie Department of Computer Science and Engineering, Thiagarajar College of Engineering, Madurai, India e-mail: [email protected] V. Ragavinodhini e-mail: [email protected] K. Sundarakantham e-mail: [email protected] S. M. Shalinie e-mail: [email protected]
G. S. S. Krishnan et al. (eds.), Computational Intelligence, Cyber Security and Computational Models, Advances in Intelligent Systems and Computing 246, DOI: 10.1007/978-81-322-1680-3_25, Springer India 2014
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network entity on another end for communication, i.e., any node that communicates with MN is called CN. HA is a router on MN’s home network, which tunnels datagram for delivery to MN when it is away from home network. In Mobile IPv6, MN should assign three IPv6 addresses to their network interfaces, when they are roaming away from their home network. First is its home address (HoA), which is a stable IP address assigned to the MN. It is used for two reasons: (1) allows a MN which is having a stable entry in the DNS and (2) to hide the IP layer mobility from upper layers. The second is MN’s current link, i.e., local address, and the third address is care-of-address (CoA) which is related with MN only when it visits foreign network. The association between the MN’s HoA and its CoA along with the remaining life time is known as binding. The central data structure used in MIPv6 is binding cache (BC), a volatile memory consisting of number of bindings for one or more MNs. BC is maintained by both CN and HA. Each entry contains the MN’s HoA, CoA, and life time. The life time is valid, if the MN does not refresh the BC entry; the entry is deleted after the lifetime expiry. After configuring its CoA, the MN has to register its binding with HA to determine the current location of MN. The remainder of this paper is organized as follows: Sect. 2 comprises of related work. The MIPv6 network architecture is d
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