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Frame Relay for CCNA
Frame Relay for CCNA
28
Computer Networking
Professional
09/07/2015

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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
access
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
Cisco and IETF
Term
Frame Relay operates using _____ as opposed to the physical circuits that leased lines use.
Definition
virtual circuits
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
Inverse ARP (IARP)
Term
DLCIs are _____ significant.
Definition
locally
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
Cisco, ANSI, and Q.933A
Term
What subinterface command is used when a single virtual circuit connects one router to another?
Definition
"point-to-point"
Term
What subinterface command is used when a router's serial interface is logically divided into a "hub-and-spoke" topology?
Definition
"multipoint"
Term
In Frame Relay, each subinterface maps to a single _____ and is defined as a separate _____.
Definition
DLCI; subnet
Term
What routing loop issue is resolved by using point-to-point subinterfaces?
Definition
split-horizon
Term
When configuring Frame Relay subinterfaces, what do you never configure on the parent interface?
Definition
an IP address
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
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