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Triangular routing

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This is an old revision of this page, as edited by Alvestrand (talk | contribs) at 14:20, 13 June 2007 (Added a bit more text). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Triangular routing is a concept from Mobile IP. Packets that are sent to a Mobile Node (MN) are first routed to the MNs home subnet and then forwarded to the MN at its current location by its Home Agent (HA). However, packets that are sent from the MN are not handled in this way, but are instead sent straight to their destination.

This may lead to problems when using services that do ingress filtering, since the source address on the packet will be the home address of the mobile node, not the care-of address assigned to the node on its guest network.