- Time To Live.
- See [TTL. Time To Live. The amount of time or number of hops a packet is allowed to exist in a network; it prevents packets that are looping from doing so forever.]
Physical layout of a network.
- topology table.
A database of reachable destinations used by EIGRP for inserting destinations into the routing table and determining what alternate routes are available.
- totally stubby area.
An OSPF area into which no summary routes (type 3 LSAs) or external routes (type 5 LSAs) are advertised.
- transit path.
A link in the network over which traffic passes to other areas of the network; transit traffic is not destined to a network attached directly to either end of the path.
- transport layer.
The layer in the OSI model that is ...