Table Of Contents
Two Routers Using Frame Relay Fragmentation
Router Using a VoFR PVC to a Cisco 3600
Router Using a VoFR PVC to a Cisco MC3810
Tandem Configuration with Three Routers for Switched Calls
Tandem Configuration with a Cisco MC3810 Endpoint Node for Cisco-Trunk (Private Line) Calls
Configuration Examples
This section provides specific configuration examples for different VoFR connections and call type scenarios. This section includes the following examples:
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Two Routers Using Frame Relay Fragmentation
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Note
The examples do not provide complete configurations, but show the required commands to configure Voice over Frame Relay.
Two Routers Using Frame Relay Fragmentation
Figure 1 shows an example of Frame Relay fragmentation between two routers. This configuration uses FRF.12 fragmentation.
Figure 1 Two Routers Using Frame Relay Fragmentation
Note
The service-policy output llq-shape command used on the Cisco 7500 series router in the above example assumes that the service policy called llq-shape was configured using low latency queuing and distributed traffic shaping. For information on low latency queueing on the VIP, see the Low Latency Queueing for the VIP feature module on CCO. For information on distributed traffic shaping, see the Distributed Traffic Shaping feature module on CCO.
The Configuration Examples section of this document assumes that the frf12-class map-class and the llq-shape service policy were previously configured.
Router Using a VoFR PVC to a Cisco 3600
This example shows an example of Frame Relay fragmentation between a Cisco 7500 series router with a VIP and a Cisco 3600 series router.
Router Using a VoFR PVC to a Cisco MC3810
Figure 2 shows an example of a Cisco 7500 series router with a VIP with connections to a Cisco MC3810 using a VoFR PVC. In this example, the Voice over Frame Relay interface on the Cisco MC3810 is configured using the vofr cisco command.
This configuration uses FRF.11 Annex C fragmentation.
In this configuration, Low Latency Queuing is required in order to make a call. For information on configuring Low Latency Queueing, see the Low Latency Queueing for the VIP feature module on CCO.
Note
Figure 2 Router Using a VoFR PVC to a Cisco MC3810
Note
The service-policy output llq-shape command used on the Cisco 7500 series router in the above example assumes that the service policy called llq-shape was configured using low latency queuing and distributed traffic shaping. For information on low latency queueing on the VIP, see the Low Latency Queueing for the VIP feature module on CCO. For information on distributed traffic shaping, see the Distributed Traffic Shaping feature module on CCO.
The Configuration Examples section of this document assumes that the frf-11 map-class and the llq-shape service policy were previously configured.
Tandem Configuration with Three Routers for Switched Calls
Figure 3 shows an example of a tandem configuration with a Cisco 3600 as one endpoint and a Cisco MC3810 as another endpoint. The Cisco 7500 series router with a VIP as a tandem node.
Figure 3 Tandem Configuration with Three Routers for Switched Calls
Note
The service-policy output llq-shape command used on the Cisco 7500 series router in the above example assumes that the service policy called llq-shape was configured using low latency queuing and distributed traffic shaping. For information on low latency queueing on the VIP, see the Low Latency Queueing for the VIP feature module on CCO. For information on distributed traffic shaping, see the Distributed Traffic Shaping feature module on CCO.
The Configuration Examples section of this document assumes that the frf-11 map-class and the llq-shape service policy were previously configured.
Tandem Configuration with a Cisco MC3810 Endpoint Node for Cisco-Trunk (Private Line) Calls
Figure 4 shows an example of a tandem configuration with a Cisco MC3810 acting as an endpoint node for Cisco-trunk (private line) calls.
Note
Figure 4 Tandem Configuration with a Cisco MC3810 Endpoint Node for Permanent Switched Call
Note
The service-policy output llq-shape command used on the Cisco 7500 series router in the above example assumes that the service policy called llq-shape was configured using low latency queuing and distributed traffic shaping. For information on low latency queueing on the VIP, see the Low Latency Queueing for the VIP feature module on CCO. For information on distributed traffic shaping, see the Distributed Traffic Shaping feature module on CCO.
The Configuration Examples section of this document assumes that the frf-12 map-class and the llq-shape service policy were previously configured.
