Document ID: 10409
Updated: Nov 15, 2007
Contents
Introduction
The Frame Relay (FR) to ATM service interworking function allows
communication between an FR end user and an ATM end user. It is based on the
Frame
Relay Forum (FRF.8)
implementation agreement, which specifies that an FR
end station may communicate with an ATM end station provided that there is a
router performing the specifications given in FRF.8 in the software between the
two end stations.
This document presents a sample configuration of FR to ATM service interworking using FRF.8 (translation mode) on the LightStream 1010. This configuration also works on the Catalyst 8510 MSR or 8540 MSR.
Prerequisites
Requirements
There are no specific requirements for this document.
Components Used
The information in this document is based on Cisco IOS® Release 12.0(3c)W5(9).
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
Conventions
For more information on document conventions, refer to Cisco Technical Tips Conventions.
Configure
In this section, you are presented with the information to configure the features described in this document.
Note: To find additional information on the commands used in this document, use the Command Lookup Tool (registered customers only) .
Network Diagram
This document uses this network setup:
The FR traffic shaping parameters used in this sample configuration in Router 1 are:
-
Committed information rate (CIR) = 64 kbps
-
Committed burst (Bc) = 8000
-
Excess burst (Be) = 8000
Note: For a detailed explanation on how to troubleshoot Frame Relay Traffic shaping connections, refer to show Commands for Frame Relay Traffic Shaping.
Configurations
This document uses these configurations:
Note: These configurations contain information relevant only for Frame Relay to ATM Service Interworking.
| Router 1 |
|---|
controller E1 5/0
channel-group 30 timeslots 1-31
!
interface Serial5/0:30
ip address 12.12.12.2 255.255.255.0
no ip directed-broadcast
encapsulation frame-relay IETF
!--- The FR encapsulation used is IETF. It should match the switch.
no fair-queue
frame-relay traffic-shaping
!--- Enabling FR traffic shaping on this interface.
frame-relay class test-iwf
frame-relay map ip 12.12.12.1 123 broadcast
!
map-class frame-relay test-iwf
no frame-relay adaptive-shaping
!--- Traffic shaping parameters configured.
frame-relay cir 64000
frame-relay bc 8000
frame-relay be 8000
|
| ATM Switch |
|---|
frame-relay connection-traffic-table-row index 123 64000 8000 128000 8000 vbr-nrt 123 ! controller E1 4/0/0 clock source free-running channel-group 30 timeslots 1-31 ! interface Serial4/0/0:30 no ip address no ip directed-broadcast encapsulation frame-relay IETF !--- The FR encapsulation used is IETF. no arp frame-relay frame-relay intf-type dce !--- Interface type is dce, because it is providing clocking. frame-relay pvc 123 rx-cttr 123 tx-cttr 123 service translation interface ATM0/0/0 0 123 !--- This command makes the translation from !--- Frame Relay to ATM PVC 123. |
| Router 2 |
|---|
interface ATM2/0.123 point-to-point ip address 12.12.12.1 255.255.255.0 no ip directed-broadcast pvc 0/123 !--- Configured ATM PVC 0/123 with traffic shaping and !--- oam-pvc management enabled. vbr-nrt 163 81 49 broadcast oam-pvc manage encapsulation aal5snap |
The traffic shaping parameters on Router 2 can be obtained from the Frame Relay connection traffic table on the ATM Switch (see the section).
Verify
This section provides information you can use to confirm your configuration is working properly.
Certain show commands are supported by the Output Interpreter Tool (registered customers only) , which allows you to view an analysis of show command output.
-
show frame-relay lmi
-
show frame-relay map
-
show frame-relay pvc
-
show atm vc interface atm 0/0/0
-
show frame-relay connection-traffic-table-row
-
show atm connection-traffic-table
-
show frame-relay interface resource serial 4/0/0:30 all-information
The output shown below is a result of entering the above commands on the devices shown in the network diagram. This output shows that the network is operating properly.
Router 1
Note: When connecting a Cisco router to a third-party connection, it is preferable to use Internet Engineering Task Force (IETF) Local Management Interface (LMI). Notice that the LMI is Cisco and the Frame Relay is DTE as it is receiving clocking from the switch.
Router1# show frame-relay lmi LMI Statistics for interface Serial5/0:30 (Frame Relay DTE) LMI TYPE = CISCO Invalid Unnumbered info 0 Invalid Prot Disc 0 Invalid dummy Call Ref 0 Invalid Msg Type 0 Invalid Status Message 0 Invalid Lock Shift 0 Invalid Information ID 0 Invalid Report IE Len 0 Invalid Report Request 0 Invalid Keep IE Len 0 Num Status Enq. Sent 1222 Num Status msgs Rcvd 1222 Num Update Status Rcvd 0 Num Status Timeouts 2
To verify that the dlci is up and mapped to the correspondent IP address, use the show frame-relay map command.
Router1# show frame-relay map
Serial5/0:30 (up): ip 12.12.12.1 dlci 123(0x7B,0x1CB0), static,
broadcast,
IETF, status defined, active
To check the status of the Frame Relay pvc, use the show frame-relay pvc command. In the output below we can see that It is active.
Router1# show frame-relay pvc
PVC Statistics for interface Serial5/0:30 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 123, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial5/0:30
input pkts 786 output pkts 549 in bytes 742312
out bytes 684503 dropped pkts 6 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 1 out bcast bytes 608
pvc create time 03:25:16, last time pvc status changed 03:09:30
ATM Switch
Note: The term ATM-PX/Y/Z refers to pseudo interface.
ATMswitch# show atm vc interface atm 0/0/0 Interface VPI VCI Type X-Interface X-VPI X-VCI Encap Status ATM0/0/0 0 5 PVC ATM2/0/0 0 43 QSAAL UP ATM0/0/0 0 16 PVC ATM2/0/0 0 35 ILMI UP ATM0/0/0 0 101 PVC ATM0/1/0 0 101 UP ATM0/0/0 0 102 PVC ATM0/1/0 0 102 UP ATM0/0/0 0 123 PVC ATM-P4/0/0 30 155 UP
To display the Frame Relay to ATM connections in the switch, use the show frame-relay connection-traffic-table-row command, as shown below:
ATMswitch# show frame-relay connection-traffic-table-row
Row cir bc be pir fr-atm Service-category ATM Row
100 64000 32768 32768 64000 vbr-nrt 100
123 64000 8000 8000 128000 vbr-nrt 123
ATMswitch# show atm connection-traffic-table
Row Service-category pcr scr/mcr mbs cdvt
1 ubr 7113539 none none
2 cbr 424 none
3 vbr-rt 424 424 50 none
4 vbr-nrt 424 424 50 none
5 abr 424 0 none
6 ubr 424 none none
10 cbr 50000 none
11 cbr 1000 none
12 cbr 11700 none
100 vbr-nrt 81 81-0 50 none
123 vbr-nrt 163 81-0 49 none
<-- (*)
2147483645* ubr 0 none none
2147483646* ubr 1 none none
2147483647* ubr 7113539 none none
(*) When you create the frame-relay connection-traffic-table-row, you associate an ATM table row index where the ATM traffic shaping parameters are automatically calculated using the Broadband Inter-Carrier Interface (B-ICI) specification, V2.0 (See formulas).
ATMswitch# show frame-relay interface resource serial 4/0/0:30 all-information
Encapsulation: FRAME-RELAY
Resource Management configuration:
Input queues (PAM to switch fabric):
Discard threshold: 87% vbr-nrt, 87% abr, 87% ubr
Marking threshold: 75% vbr-nrt, 75% abr, 75% ubr
Output queues (PAM to line):
Discard threshold: 87% vbr-nrt, 87% abr, 87% ubr
Marking threshold: 75% vbr-nrt, 75% abr, 75% ubr
Overflow servicing for VBR: enabled
Available bit rates (in bps):
1920000 vbr-nrt RX, 1920000 vbr-nrt TX
1920000 abr RX, 1920000 abr TX
1920000 ubr RX, 1920000 ubr TX
Overbooking: disabled
Resource Management state: Allocated bit rates (in bps):
64000 vbr-nrt RX, 64000 vbr-nrt TX
0 abr RX, 0 abr TX
0 ubr RX, 0 ubr TX
Actual allocated bit rates (in bps):
64000 vbr-nrt RX, 64000 vbr-nrt TX
0 abr RX, 0 abr TX
0 ubr RX, 0 ubr TX
Troubleshoot
There is currently no specific troubleshooting information available for this configuration.
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Refer to Cisco Technical Tips Conventions for information on conventions used in this document.