 | Copyright © 2008, Juniper Networks, Inc. All rights reserved. Trademark Notice. | |
A virtual connection (VC) defines a logical networking path between two endpoints in an ATM network. ATM cells travel from one point to the other over a virtual connection. An ATM cell is a package of information that is always 53 bytes in length, unlike a frame or packet, which has a variable length. An ATM cell has a cell header and a payload. The payload contains the user data.
The cell header includes an 8-bit virtual path identifier (VPI) and a 16-bit virtual channel identifier (VCI).
An ATM network can have two types of VCs, depending on the addressing used to switch the traffic:
| Copyright © 2008, Juniper Networks, Inc. All rights reserved. Trademark Notice. | |