OSI communications is supported within a network which may consist of a single area or multiple areas. Level 1 routers provide interconnectivity between nodes in an area (all Alcatel-Lucent 1665 DMX are Level 1 routers). Level 2 routers provide connectivity between areas.
In a network with multiple areas, each area must contain at least one Level 2 router. An area without a Level 2 router would be isolated from the rest of the network. The adjacent set of Level 2 routers form the Level 2 sub-domain. For proper OSI routing, every Level 2 router should have at least one neighbor (via OSI LAN or DCC) that is also a Level 2 router. At least one of the Level 2 routers in an area must be adjacent to a Level 2 router in another area, otherwise, the former area would be isolated from the rest of the network.
Each Alcatel-Lucent 1665 DMX is not a Level 2 router by default. TL1 command ENT-ULSDCC-L3 can be used to enable any Alcatel-Lucent 1665 DMXas a Level 2 router.
| November 2011 | Copyright © 2011 Alcatel-Lucent. All rights reserved. |