Of course, you are restricted in how you connect the network.Ĭasimer DeCusatis, in Handbook of Fiber Optic Data Communication (Fourth Edition), 2013 13.2.2 Shortest Path Bridging Fortunately, the IEEE has published a standard for link aggregation EE and modern hardware conforms. Link aggregation has been implemented by many different vendors, and so it goes by many different names, including network interface card (NIC) teaming, port teaming, link bundling, NIC bonding, and network fault tolerance, to name a few. Of course since your network has no redundant loops, failure of a single link may cause complete failure of some portion of your network.Īn alternative is to allow redundant network connections between switches, but to use link aggregation instead of STP. Small networks using a single switch, or just a few switches without any physical loops, can have STP disabled altogether. For example, if you have a physically loop-free network (and thus no redundancy), you have no need for STP. One simple approach is to disable STP when it is not needed. Mike Borkin, in Seven Deadliest Network Attacks, 2010 Disable STP ent0 automatically returns to service on the link aggregation device when it recovers. For example, in the previous example, if ent0 fails, the packets are automatically sent on the next available adapter, ent1, without disruption to existing user connections. Link aggregation can help provide more redundancy because individual links might fail, and the link aggregation device will fail over to another adapter in the device to maintain connectivity. The system considers these aggregated adapters as one adapter, and all adapters in the link aggregation device are given the same hardware address, so they are treated by remote systems as if they are one adapter. Link aggregation helps to provide more throughput over a single IP address than would be possible with a single Ethernet adapter.įor example, ent0 and ent1 can be aggregated to ent3. The adapters can then act as a single Ethernet device. Bhanu Prakash Reddy Tholeti, in Handbook of Fiber Optic Data Communication (Fourth Edition), 2013 16.2.1.3 Link aggregation or EtherChannel devicesĪ link aggregation, or EtherChannel, device is a network port-aggregation technology that allows several Ethernet adapters to be aggregated.
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