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 Interface●●●●●●Frame relay — the G350 supports the following LMI types:- ANSI (Annex D)- ITU-T:Q-933 (Annex A0)- LMI-Rev1- No LMIBackup functionality supported between any type of Serial Layer 2 interface. For moreinformation, see Backup interfaces on page 97.Dynamic CAC for Fast Ethernet, Serial, and GRE tunnel interfaces. For more information,see Dynamic CAC on page 101.Quality of Service (QoS) — the G350 uses Weighted Fair VoIP Queuing (WFVQ) as thedefault queuing mode for WAN interfaces. WFVQ combines weighted fair queuing (WFQ)for data streams and priority VoIP queuing to provide the real-time response time that isrequired for VoIP. The G350 also supports the VoIP Queue and Priority Queue legacyqueuing methods. For more information, see Configuring Weighted Fair VoIP Queuing(WFVQ) on page 76.Policy — each interface on the G350 can have four active policy lists:- Ingress Access Control List- Ingress QoS List- Egress Access Control List- Egress QoS ListAccess control lists define which packets should be forwarded or denied access to thenetwork. QoS lists change the DSCP and 802.1p priority of routed packets according to thepacket characteristics. For more information, see Configuring policy on page 253.Each interface on the G350 can also have an active policy-based routing list. For moreinformation, see Chapter 19: Configuring policy-based routing on page 273.RTP Header Compression — use of RTP compression can save up to 60% of theinterface’s bandwidth. RTP compression also enhances the efficiency of voicetransmission over the network by compressing the headers of Real Time Protocol (RTP)packets, thereby minimizing the overhead and delays involved in RTP implementation. Formore information, see Configuring RTP header compression on page 72.82 Administration of the Avaya G350 Media Gateway

Serial interface overviewSerial interface overviewA serial interface is a virtual interface that is created over a portion of an E1/T1 or USP port on aWAN media module. Serial interfaces support PPP and frame relay encapsulation protocols.Figure 1: Layer 1 T1 Port on page 83 illustrates a Layer 1 T1 port with two Channel Groupsdefined. All data from each Channel Group is encapsulated using PPP protocol, and isdistributed over the multiple IP interfaces defined for each Channel Group.Figure 1: Layer 1 T1 PortFigure 2: E1/T1 Port Channel Group on page 83 illustrates an E1/T1 port Channel Group. Alldata from the Channel Group is encapsulated using frame relay protocol. The data is sent via aframe relay serial interface and Sub-interfaces over the multiple IP interfaces defined usingData Link Connection Identifier (DLCI).Figure 2: E1/T1 Port Channel GroupFigure 3: USP Port - PPP Protocol on page 84 illustrates a USP port. All data from the USPport is encapsulated using the PPP protocol, and is sent via a serial interface over the multipleIP interfaces defined for the Serial interface.Issue 3 January 2005 83

Configuring a WAN Interface●●●●●●Frame relay — <strong>the</strong> <strong>G350</strong> supports <strong>the</strong> following LMI types:- ANSI (Annex D)- ITU-T:Q-933 (Annex A0)- LMI-Rev1- No LMIBackup functionality supported between any type <strong>of</strong> Serial Layer 2 interface. For moreinformation, see Backup interfaces on page 97.Dynamic CAC for Fast E<strong>the</strong>rnet, Serial, and GRE tunnel interfaces. For more information,see Dynamic CAC on page 101.Quality <strong>of</strong> Service (QoS) — <strong>the</strong> <strong>G350</strong> uses Weighted Fair VoIP Queuing (WFVQ) as <strong>the</strong>default queuing mode for WAN interfaces. WFVQ combines weighted fair queuing (WFQ)for data streams and priority VoIP queuing to provide <strong>the</strong> real-time response time that isrequired for VoIP. The <strong>G350</strong> also supports <strong>the</strong> VoIP Queue and Priority Queue legacyqueuing methods. For more information, see Configuring Weighted Fair VoIP Queuing(WFVQ) on page 76.Policy — each interface on <strong>the</strong> <strong>G350</strong> can have four active policy lists:- Ingress Access Control List- Ingress QoS List- Egress Access Control List- Egress QoS ListAccess control lists define which packets should be forwarded or denied access to <strong>the</strong>network. QoS lists change <strong>the</strong> DSCP and 802.1p priority <strong>of</strong> routed packets according to <strong>the</strong>packet characteristics. For more information, see Configuring policy on page 253.Each interface on <strong>the</strong> <strong>G350</strong> can also have an active policy-based routing list. For moreinformation, see Chapter 19: Configuring policy-based routing on page 273.RTP Header Compression — use <strong>of</strong> RTP compression can save up to 60% <strong>of</strong> <strong>the</strong>interface’s bandwidth. RTP compression also enhances <strong>the</strong> efficiency <strong>of</strong> voicetransmission over <strong>the</strong> network by compressing <strong>the</strong> headers <strong>of</strong> Real Time Protocol (RTP)packets, <strong>the</strong>reby minimizing <strong>the</strong> overhead and delays involved in RTP implementation. Formore information, see Configuring RTP header compression on page 72.82 <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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