Term
| Name the two separate bandwidth specifications with Frame Relay. |
|
Definition
| Access rate and CIR (committed information rate) |
|
|
Term
| In Frame Relay, the _____ rate is the maximum speed at which the Frame Relay interface can transmit. |
|
Definition
|
|
Term
| In Frame Relay, the _____ rate is the maximum bandwidth of data guaranteed to be delivered, but only the the average amount that the service provider will allow you to transmit. |
|
Definition
| CIR (committed information rate) |
|
|
Term
| Name the two encapsulation options for Frame Relay. |
|
Definition
|
|
Term
| Frame Relay operates using _____ as opposed to the physical circuits that leased lines use. |
|
Definition
|
|
Term
| Name two types of virtual circuits used in a Frame Relay network. |
|
Definition
| PVC (permanent virtual circuit) and SVC (switched virtual circuit |
|
|
Term
| What makes a PVC "permanent"? |
|
Definition
| The telco creates the mappings inside its gear, and as long as you pay the bill, the circuit remains in place. |
|
|
Term
| Why are SVCs similar to phone calls? |
|
Definition
| The virtual circuit is established when data needs to be transmittedm and then dismantled when the data transfer is complete. |
|
|
Term
| Frame Relay PVCs are identified to DTE end devices by _____. |
|
Definition
| Data Link Connection Identifiers (DLCIs) |
|
|
Term
| _____ is used with DLCIs in a Frame Relay network, and it is used to map a DLCI to an IP address. |
|
Definition
|
|
Term
| DLCIs are _____ significant. |
|
Definition
|
|
Term
| _____ is a signaling standard used for passing information about the operation and status of the virtual circuit. |
|
Definition
| Local Management Interface (LMI) |
|
|
Term
| LMI is not communication between _____; it’s communication between your router and the nearest _____. |
|
Definition
| local routers; Frame Relay switch |
|
|
Term
| Name two key pieces of information LMI communicates between the provider’s network and the DTE (your router). |
|
Definition
| Keepalives that verify the "up/up" status of the circuit and DLCI status. |
|
|
Term
| Name three types of LMI message formats. |
|
Definition
|
|
Term
| What subinterface command is used when a single virtual circuit connects one router to another? |
|
Definition
|
|
Term
| What subinterface command is used when a router's serial interface is logically divided into a "hub-and-spoke" topology? |
|
Definition
|
|
Term
| In Frame Relay, each subinterface maps to a single _____ and is defined as a separate _____. |
|
Definition
|
|
Term
| What routing loop issue is resolved by using point-to-point subinterfaces? |
|
Definition
|
|
Term
| When configuring Frame Relay subinterfaces, what do you never configure on the parent interface? |
|
Definition
|
|
Term
| What are the four states a Frame Relay PVC can be in? |
|
Definition
| ACTIVE, INACTIVE, DELETED, and STATIC |
|
|
Term
| You run the "show frame-relay pvc" command and see "STATUS = ACTIVE". What does that mean? |
|
Definition
| The PVC is operational and can transmit data. |
|
|
Term
| You run the "show frame-relay pvc" command and see "STATUS = INACTIVE". What does that mean? |
|
Definition
| The connection from the local router to the switch is working, but the connection to the remote router is not available. |
|
|
Term
| You run the "show frame-relay pvc" command and see "STATUS = DELETED". What does that mean? |
|
Definition
| The PVC is not present and no LMI information is being received from the Frame Relay switch. |
|
|
Term
| You run the "show frame-relay pvc" command and see "STATUS = STATIC". What does that mean? |
|
Definition
| The Local Management Interface (LMI) mechanism on the interface is disabled (by using the “no keepalive” command). |
|
|
Term
| What key information can you obtain from the show frame-relay lmi command? |
|
Definition
| Displays the LMI statistics of all frame-relay enabled interfaces. |
|
|
Term
| What information can you obtain from the show frame-relay map command? |
|
Definition
| The next hop protocol address-to-DLCI mapping table on the router. |
|
|
Term
| What key information can you obtain from the show interfaces serial command? |
|
Definition
-The keepalive interval configured
-The Frame Relay LMI type used
-The status of Frame Relay LMI
-Whether the interface is a DTE or DCE device |
|
|
