It allows on-demand increase or decrease of the bandwidth of the virtual concatenated group in a ''hitless'' manner. This brings ''bandwidth-on-demand'' capability for data clients like Ethernet when mapped into TDM containers.
LCAS is also able to temporarily remove failed members from the virtual concatenation group. A failed member will automatically cause a decrease of the bandwidth and after repair the bandwidth will increase again in a hitless fashion. Together with diverse routing this provides survivability of data traffic without requiring excess protection bandwidth allocation.
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