Specifically, a system administrator must assign LAN numbers and bridge numbers. Improper configuration leads to disaster. With spanning tree bridges, the bridges hold that responsibility, and once they have reconfigured, all hosts start using the new path at the same time. Not surprisingly, IBM supports source routing bridges, while DEC supports spanning tree bridges. IBM markets token ring networks, while DEC has always been big on Ethernets.
Text calls gateways multi-protocol routers.
Fragmenting large packets for transmission across networks that carry only small maximum packet lengths. Selecting an appropriate path through the subnet. Because gateways do more work than bridges, they generally run slower than bridges. Gateway Ownership One issue that arises with gateways is who owns them. Typically, bridges connect LANs of one organization, and the issue does not arise there.