cisco ccna home lab setup

cisco ccna home lab setup.Table 25.1 Common Frame Relay Terminology Terminology Definition DefinitionsLMI (Local Management Interface) Specifies how the DTE (router or other Frame Relay device) interacts with the DCE (Frame Relay switch)DLCI (Data Link Connection Identifier) Used to uniquely represent a VC on a physical interface and is the address of the VC. By using DLCI, traffic to multiple destinations can be multiplexed on a single physical interface. DLCIRs are locally meaningful and may vary with the network segment through which the traffic passes. In other words, the current router may use a DLCI of 45 when going to a remote site, and a DLCI of 54 when returning traffic from that remote site, but they refer to the same VC. when forwarding traffic between segments, the Frame Relay switch will translate the DLCI. The DLCI is a Layer 2 address, similar to the MAC address used by EthernetAccess Rate The speed of the physical connection between the router and the Frame Relay switch (for example, T1)CIR (Committed Information Rate) The average rate of VC measured over a specified period of time, as guaranteed by the operatorBc (Committed Burst Rate) The carrier-guaranteed average speed of the VC over the specified time (which is shorter than the specified time for CIR). In other words, this means that the VC is allowed to have bursts of traffic that exceed the CIR for a shorter period of timeBE (Excess Burst Rate) The maximum data rate that the provider provides for the VC. Some carriers allow this value to be set to the access rateDE (Discardable) Used to mark frames with a lower priority. You can do this manually; if you do not, the carrier will do so for frames that exceed the traffic contract (CIR/Bc)Oversubscription The sum of the CIRs of all VCs on the interface exceeds the access rate of the interface: you assume that these VCs will not carry traffic at the contracted rate at the same timeFECN (Forward Explicit Congestion Notification) When congestion occurs on the carrier's network, the carrier switch sets this value in the Frame Relay frame header to tell the VC-connected destination device about the situation. As the traffic travels to its destination, the operator might do this