<networking> A unit of communications hardware or software that is on the same protocol layer of a network as another. A common way of viewing a communications link is as two protocol stacks, which are actually connected only at the very lowest (physical) layer, but can be regarded as being connected at each higher layer by virtue of the services provided by the lower layers. Peer-to-peer communication refers to these real or virtual connections between corresponding systems in each layer.

To give a simple example, when two people talk to each other, the lowest layer is the physical layer which concerns the sound pressure waves travelling from mouth to ear (so mouths and ears are peers) the next layer might be the speech and hearing centres in the people's brains and the top layer their cerebellums or minds. Although, barring telepathy, nothing passes directly between the two minds, there is a peer-to-peer communication between them.

(01 Jan 2007)

peenash, peep, peephole optimisation, peepul tree < Prev | Next > peer, peer assessment, peeress

Bookmark with: icon icon icon icon iconword visualiser Go and visit our forums Community Forums

1. To come in sight; to appear. "So honor peereth in the meanest habit." (Shak) "See how his gorget peers above his gown!" (B. Jonson)

2. [Perh. A different word; cf. OE. Piren, LG. Piren. Cf. Pry to peep] To look narrowly or curiously or intently; to peep; as, the peering day. "Peering in maps for ports, and piers, and roads." (Shak) "As if through a dungeon grate he peered." (Coleridge)

Origin: OF. Parir, pareir equiv. To F. Paraitre to appear, L. Parere. Cf. Appear.

(01 Mar 1998)

peep, peephole optimisation, peepul tree, peer < Prev | Next > peer assessment, peeress, peer group

Bookmark with: icon icon icon icon iconword visualiser Go and visit our forums Community Forums