ZHLS-GF

ZHLS-GF (Zone-Based Hierarchical Link State Routing Protocol with Gateway Flooding) is a hybrid routing protocol based on ZHLS (Joa-Ng and Lu, 1999). In ZHLS, all network nodes construct two routing tables, an intra-zone routing table and an inter-zone routing table, by flooding NodeLSPs within the zone and ZoneLSPs throughout the network. However, this incurs a large communication overhead in the network. In ZHLS-GF, the flooding scheme floods ZoneLSPs only to the gateway nodes of zones thus reduces the communication overhead significantly. Furthermore in ZHLS-GF, only the gateway nodes store ZoneLSPs and construct inter-zone routing tables therefore the total storage capacity required in the network is less than ZHLS.

References

*Hamma, T., Katoh, T., Bista, B.B. and Takata, T., 2006, “An Efficient ZHLS Routing Protocol for Mobile Ad Hoc Networks”, Proc. of DEXA Workshops 2006, pp. 66-70.