Administration of the Avaya G350 Media Gateway - Avaya Support

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Configuring policy-based routingPolicy-based routing only operates on routed packets. Packets traveling within the same subnetare not routed, and are therefore not affected by policy-based routing.The Loopback interface is a logical interface which handles traffic that is sent to and from theG350 itself. This includes ping packets to or from the G350, as well as telnet, FTP, DHCP Relay,TFTP, HTTP, NTP, SNMP, H.248, and other types of traffic. The Loopback interface is also usedfor traffic to and from analog and DCP phones connected to the device via IP phone entities.The Loopback interface is always up. You should attach a PBR list to the Loopback interface ifyou want to route specific packets generated by the G350 to a specific next-hop.Unlike the case with other interfaces, PBR lists on the Loopback interface are applied topackets when they leave the G350, rather than when they enter.Certain types of packets are not considered router packets (on the Loopback interface only),and are therefore not affected by policy-based routing. These include RIP, OSPF, VRRP, GRE,and keepalive packets. On the other hand, packets using SNMP, Telnet, Bootp, ICMP, FTP,SCP, TFTP, HTTP, NTP, and H.248 protocols are considered routed packets, and are thereforeaffected by policy-based routing on the Loopback interface.ApplicationsThe most common application for policy-based routing is to provide for separate routing of voiceand data traffic. It can also be used as a means to provide backup routes for defined traffictypes.Separate routing of voice and data trafficAlthough there are many possible applications for policy-based routing, the most commonapplication is to create separate routing for voice and data traffic.For example, the application shown in Figure 24: Policy-based routing — Voice/Data DivisionBy DSCP on page 275 uses the DSCP field to identify VoIP control packets (DSCP=34, 41),VoIP Bearer RESV packets (DSCP = 43, 44), and VoIP Bearer packets (DSCP = 46).Policy-based routing sends these packets over the T1 WAN line, and sends other packets overthe Internet. This saves bandwidth on the more expensive serial interface.274 Administration of the Avaya G350 Media Gateway
ApplicationsFigure 24: Policy-based routing — Voice/Data Division By DSCPG350T1Voice -DSCP=34,41,43,44,46RouterT1ISPxDSL1WANETHData -DefaultHeadquartersSmall BranchBackupYou can utilize policy-based routing to define backup routes for defined classes of traffic. If thefirst route on the next hop list fails, the packets are routed to a subsequent hop. Whennecessary, you can use the NULL interface to drop packets when the primary next hop fails. Forexample, voice packets are usually sent over a WAN line, and not the Internet. You canconfigure a PBR list to drop voice packets when the WAN line is down.Issue 3 January 2005 275
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Administration of theAvaya G350 Med
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Electromagnetic Compatibility (EMC)
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ContentsAbout this Book . . . . . .
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ContentsConfiguring PPP . . . . . .
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ContentsPort classification . . . .
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ContentsConfiguring VRRP . . . . .
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ContentsChapter 19: Configuring pol
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Contents16 Administration of the Av
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About this Book4. Scroll down to fi
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About this BookSending us commentsA
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Introduction●●●●●●●
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Configuration overviewIf you intend
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Configuration overviewSaving config
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Accessing the Avaya G350 Media Gate
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Basic device configurationConfiguri
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Basic device configurationThe Media
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Basic device configurationSetting r
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Basic device configuration●●●
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Basic device configurationEach firm
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Basic device configurationThe follo
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Configuring Ethernet portsConfiguri
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Configuring Ethernet portsWAN Ether
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Configuring loggingSyslog serverA S
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Configuring loggingFilters and seve
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Configuring loggingTable 5: Logging
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Configuring VoIP QoSConfiguring RTP
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Configuring VoIP QoSConfiguring QoS
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Configuring VoIP QoSConfiguring Wei
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Configuring the G350 for modem useN
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Configuring the G350 for modem use8
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Configuring a WAN Interface●●
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Configuring a WAN InterfaceFigure 3
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Configuring a WAN Interface3. Use t
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Configuring a WAN InterfaceE1/T1 de
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Configuring a WAN InterfaceUSP defa
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Configuring a WAN Interfacetrying t
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Configuring a WAN Interface8. Use t
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Configuring a WAN InterfaceConfigur
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Configuring a WAN InterfaceNote:Not
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Configuring a WAN InterfaceIf one o
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Configuring a WAN InterfacePPP VoIP
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Configuring a WAN Interface● VLAN
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Configuring a WAN Interface110 Admi
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Configuring PoELoad detectionThe MM
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Configuring PoEPoE configuration CL
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Configuring PoE116 Administration o
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Configuring Emergency Transfer Rela
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Configuring SNMPThere are several w
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Configuring SNMPUsersSNMPv3 uses th
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Configuring SNMPGroup NameSecurityM
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Configuring SNMP- notification type
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Configuring SNMPConfiguring dynamic
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Configuring SNMPThe following examp
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Configuring advanced switchingVLAN
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Configuring advanced switchingMulti
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Configuring advanced switching●
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Configuring advanced switchingRelia
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Configuring advanced switchingSwitc
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Configuring advanced switchingPort
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Configuring advanced switchingThe S
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Configuring advanced switching●Po
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Configuring advanced switchingThe f
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Configuring advanced switchingPort
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Configuring contact closureContact
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Configuring contact closure154 Admi
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Configuring RMON monitoringRMON CLI
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Configuring RMON monitoring158 Admi
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Configuring the routerOverview of t
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Configuring the routerLayer 2 logic
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Configuring the routerStatic routes
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Configuring the routerRouting table
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Configuring the routerRouting packe
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Configuring the routerThe following
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Configuring the routerDynamic MTU d
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Configuring the routerAdditional GR
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Configuring the routerYou can use t
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Configuring the routerDHCP/BOOTP re
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Configuring the routerApplication
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Configuring the routerNote:Note:If
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Configuring the routerG350-001(supe
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Configuring the routerDirected broa
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Configuring the routerDynamic ARP t
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Configuring the routerConfiguring I
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Configuring the routerPoison-revers
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Configuring the router●●●●U
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Configuring the routerOSPF commands
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Configuring the routerand what metr
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Configuring the router●●●●
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Configuring the routerReassembly pa
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Configuring IPSec VPNConfiguring a
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Configuring IPSec VPNConfiguring IP
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Configuring IPSec VPNPrerequisite -
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Configuring IPSec VPN●hash: the h
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Configuring IPSec VPNTo configure p
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Configuring IPSec VPN3. Exit crypto
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Configuring IPSec VPN9. Exit crypto
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Configuring IPSec VPNIPSec VPN main
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Configuring IPSec VPN2. Use the set
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Configuring IPSec VPNConfiguring th
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Page 290 and 291: FIPSFigure 26: Image of the cryptog
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Traps and MIBsNameParameters(MIB va
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Traps and MIBsMIB FileIP-FORWARD-MI
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Traps and MIBsObjectOIDgenOpResetSu
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Traps and MIBsThe following table p
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Traps and MIBsObject OIDipCidrRoute
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Traps and MIBsObject OIDgenMemUtili
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Traps and MIBsObject OIDdsx1Circuit
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Traps and MIBsObject OIDipOutDiscar
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Traps and MIBsObject OIDsnmpOutBadV
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Traps and MIBsObject OIDdistributio
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Traps and MIBsObject OIDrs232SyncPo
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Traps and MIBsObject OIDifInUnknown
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Traps and MIBsObject OIDdsx1Fdl 1.3
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Traps and MIBsObject OIDipPolicyCon
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Traps and MIBsObject OIDchGroupList
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Traps and MIBsObject OIDgenGroupLog
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Traps and MIBsObject OIDcmgModuleSe
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Traps and MIBsObject OIDcmgVoipLoca
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Traps and MIBsObject OIDfrCircuitDl
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Traps and MIBsObject OIDipAdEntIfIn
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Traps and MIBsObject OIDpppLinkStat
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Traps and MIBsObject OIDifTableXtnd
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Traps and MIBsObject OIDospfIfAuthT
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Traps and MIBs388 Administration of
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Configuring the G350 using the Avay
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Configuring the G350 using the GIW2
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IndexCommands, (continued)autoneg .
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IndexCommands, (continued)show-rule
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IndexHHello packets . . . . . . . .
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IndexPolicy-based routingapplicatio
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Indexset vlan . . . . . . . . . . .
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Index450 Administration of the Avay
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