Bonding means real aggregation of bandwidth of all WAN media to be bonded. Bonding routers enable to bond different networking media such as DSL, 4G/LTE, or cable from multiple providers. The advantage of bonding internet lines is that with bonding a single virtual broadband line is created based on the combined broadband bandwidths, providing more bandwidth for your applications. A further advantage of bonding is the fact that an interruption of a bonded line will not affect the applications using the bonded link. If one link fails, others remain to ensure your Internet access.
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