Does AppleTalk loadshare between two equal-cost links?
A. AppleTalk does not loadshare between equal cost paths. If there are equal hop paths, the source router uses one path, and the destination router uses a second path in response. This occurs because Routing Table Management Protocol (RTMP) from the source router sends updates on the first path and then on second path. The destination router receives the last update from the second path and sends the reply back on the second path rather than first path. Enhanced Interior Gateway Routing Protocol (EIGRP), since it does not use hop-based metrics, does not value 19.2 kbps and T1 as equal. EIGRP always uses the T1 because it has better metrics than 19.2 kbps.
