Administration of the Avaya G350 Media Gateway - Avaya Support
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Administration of the Avaya G350 Media Gateway - Avaya Support

Administration of the Avaya G350 Media Gateway - Avaya Support Administration of the Avaya G350 Media Gateway - Avaya Support

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Configuring a WAN InterfaceIf one of the Priority DLCIs is down, its traffic is dropped.Map the PVC control protocol on the routers at all ends of a multi-VC point-to-point link. Mapthis VC to the highest priority DLCI.Traffic Shaping and MarkingTraffic shaping monitors outgoing traffic and takes appropriate action if traffic exceeds agreedparameters. The action could be to drop the packets or mark them as being high-drop priority.The Avaya G350 Media Gateway supports the following traffic shaping parameters per PVC:●●●Committed Information Rate (CIR) — the amount of committed bandwidth to which thecustomer is entitledDiscard Eligible (DE) pre-mark — sets the threshold for pre-marking DE of non-highpriority traffic, in percentage of CIR.Link Fragmentation and Interleaving (LFI) — enables fragmentation of large frame relayframes per PVCYou can configure the traffic shaping parameters within map classes. A map class is comprisedof the following parameters:●●●●●CIR — Default 56,000 bpsCommitted Burst (BC) size — default 7,000 bpsExcess Burst (BE) size — default 0 bpsDE pre-mark — Specifies the amount of non-high priority (0 to 5) packets over the BCand under the BE to label as DE. This amount is measured in percentage of CIR. Thedefault is 100%, unconditionally dropping all packets above the BE.Fragmentation — Fragment size, in bytes. The default is No Fragmentation.You can configure up to 128 different map classes using different combinations of traffic shapingparameters. You then apply these map classes to either the Primary VC or to the Priority DLCIgroup VCs.Note:Note:You must configure the Primary VC before associating a DLCI map class to thePriority DLCI group VCs. Removing the Primary VC after associating a DLCI mapclass to the Priority LCI group VCs, removes their map class configuration.You can enable traffic shaping on a frame relay interface using the frame-relaytraffic-shaping command. After you enable traffic shaping, a default map class is appliedto all currently configured PVCs. In this default map class, the BE is zero. All traffic above theBC is dropped.104 Administration of the Avaya G350 Media Gateway

WAN configuration examplePriority queuingPriority queuing is designed to give all mission-critical programs higher priority than less criticaltraffic. Traffic is queued as high, normal, medium, or low. Using priority queuing, all high-prioritytraffic is serviced first, then normal, etc.The frame relay ingress queuing mechanism functions the same as on PPP interfaces. Theframe relay egress queuing mechanism also functions the same as on PPP interfaces, servingall PVCs configured on the interface, with an additional user-configurable DE buffer. The DEbuffer contains all traffic marked as Discard Eligible, and has the lowest priority.When using VoIP, the G350 enables a distinction within the high-priority queue betweenpriorities 6 and 7. The G350 uses priority 6 for the voice-bearer traffic, and priority 7 for thevoice-controller traffic. These two priorities are served on a round-robin basis. Within thehigh-priority queue, the priority 6 capacity is a maximum of 25% the size of the priority 7capacity to reduce the delay of voice flow. The priority 6-7 distinction exists in data mode aswell, where the queue is divided equally between both capacities.WAN configuration exampleThis section contains an example that illustrates a common PPP VoIP configuration betweentwo sites connected over a WAN.Issue 3 January 2005 105

Configuring a WAN InterfaceIf one <strong>of</strong> <strong>the</strong> Priority DLCIs is down, its traffic is dropped.Map <strong>the</strong> PVC control protocol on <strong>the</strong> routers at all ends <strong>of</strong> a multi-VC point-to-point link. Mapthis VC to <strong>the</strong> highest priority DLCI.Traffic Shaping and MarkingTraffic shaping monitors outgoing traffic and takes appropriate action if traffic exceeds agreedparameters. The action could be to drop <strong>the</strong> packets or mark <strong>the</strong>m as being high-drop priority.The <strong>Avaya</strong> <strong>G350</strong> <strong>Media</strong> <strong>Gateway</strong> supports <strong>the</strong> following traffic shaping parameters per PVC:●●●Committed Information Rate (CIR) — <strong>the</strong> amount <strong>of</strong> committed bandwidth to which <strong>the</strong>customer is entitledDiscard Eligible (DE) pre-mark — sets <strong>the</strong> threshold for pre-marking DE <strong>of</strong> non-highpriority traffic, in percentage <strong>of</strong> CIR.Link Fragmentation and Interleaving (LFI) — enables fragmentation <strong>of</strong> large frame relayframes per PVCYou can configure <strong>the</strong> traffic shaping parameters within map classes. A map class is comprised<strong>of</strong> <strong>the</strong> following parameters:●●●●●CIR — Default 56,000 bpsCommitted Burst (BC) size — default 7,000 bpsExcess Burst (BE) size — default 0 bpsDE pre-mark — Specifies <strong>the</strong> amount <strong>of</strong> non-high priority (0 to 5) packets over <strong>the</strong> BCand under <strong>the</strong> BE to label as DE. This amount is measured in percentage <strong>of</strong> CIR. Thedefault is 100%, unconditionally dropping all packets above <strong>the</strong> BE.Fragmentation — Fragment size, in bytes. The default is No Fragmentation.You can configure up to 128 different map classes using different combinations <strong>of</strong> traffic shapingparameters. You <strong>the</strong>n apply <strong>the</strong>se map classes to ei<strong>the</strong>r <strong>the</strong> Primary VC or to <strong>the</strong> Priority DLCIgroup VCs.Note:Note:You must configure <strong>the</strong> Primary VC before associating a DLCI map class to <strong>the</strong>Priority DLCI group VCs. Removing <strong>the</strong> Primary VC after associating a DLCI mapclass to <strong>the</strong> Priority LCI group VCs, removes <strong>the</strong>ir map class configuration.You can enable traffic shaping on a frame relay interface using <strong>the</strong> frame-relaytraffic-shaping command. After you enable traffic shaping, a default map class is appliedto all currently configured PVCs. In this default map class, <strong>the</strong> BE is zero. All traffic above <strong>the</strong>BC is dropped.104 <strong>Administration</strong> <strong>of</strong> <strong>the</strong> <strong>Avaya</strong> <strong>G350</strong> <strong>Media</strong> <strong>Gateway</strong>

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