Alcatel-Lucent 7450 Manual page 148

Inter Area TE LSP (ERO Expansion Method)
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Note that a one-to-one detour backup LSP cannot be used at the PLR for the protection of the ABR
node. As a result, a 7x50 PLR node will not signal a one-to-one detour LSP for ABR protection. In
addition, an ABR node will reject a Path message, received from a third party implementation,
with a detour object and with the ERO having the next-hop loose. This is performed regardless if
the cspf-on-loose option is enabled or not on the 7x50 node. In other words, the 7x50 as a transit
ABR for the detour path will reject the signaling of an inter-area detour backup LSP.
Page 148
Refresh reduction over dynamic bypass will only work if the node-id RRO also contains
the interface address. Otherwise the neighbor will not be created once the bypass is
activated by the PLR node. The Path state will then time out after three refreshes
following the activation of the bypass backup LSP.
7450 ESS MPLS Guide