ZHLS-GF

ZHLS-GF (Zone-Based Hierarchical Link State Routing Protocol with Gateway Flooding) is a hybrid routing protocol for computer networks that is based on ZHLS.[1]

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 reducing the communication overhead significantly. Further, in ZHLS-GF only the gateway nodes store ZoneLSPs and constructs inter-zone routing tables, meaning that the total storage capacity required in the network is less than in ZHLS.

References

Joa-Ng, M.; i-Tai Lu (1999). "A peer-to-peer zone-based two-level link state routing for mobile ad hoc networks". IEEE Journal on Selected Areas in Communications. 17 (8): 1415–1425. doi:10.1109/49.779923.

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.

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[1] Joa-Ng, M.; i-Tai Lu (1999). "A peer-to-peer zone-based two-level link state routing for mobile ad hoc networks". IEEE Journal on Selected Areas in Communications. 17 (8): 1415–1425. doi:10.1109/49.779923.