3Com® VCX V7111 VoIP Gateway User Guide 293Application Traffic / Network Types Class-of-Service (Priority)Syslog Management BronzeICMP Management Determined by the initiator of therequestARP listener Determined by the initiator of therequest NetworkSNMP Traps Management BronzeDNS client EnableDNSasOAM NetworkNTP EnableNTPasOAMDepends on the traffic type:Control: Premium controlManagement: BronzeNFS NFSServers_VlanType in theNFSServers table GoldOperation Outgoing packets (from the gateway to the switch):All outgoing packets are tagged, each according to its interface (control, media or OAM).If the gateway’s native ID is identical to one of the other IDs (usually to the OAM ID), thisID (e.g., OAM) is set to zero on outgoing packets (VlanSendNonTaggedOnNative = 0).This method is called Priority Tagging (p tag without Q tag). If the parameterVlanSendNonTaggedOnNative is set to 1, the gateway sends regular packets (with noVLAN tag). Incoming packets (from the switch to the gateway):The switch sends all packets intended for the gateway (according to the switch'sconfiguration) to the gateway without altering them. For packets whose VLAN ID isidentical to the switch's PVID, the switch removes the tag and sends a packet.The gateway only accepts packets that have a VLAN ID identical to one of its interfaces(control, media or OAM). Packets with a VLAN ID that is 0 or packets without a tag areaccepted only if the gateways native VLAN ID is identical to the VLAN ID of one of itsinterfaces. In this case, the packets are sent to the relevant interface. All other packets arerejected.Getting Started with VLANS and Multiple IPsBy default the V7111 gateway operates without VLANs and multiple IPs, using a single IPaddress, subnet mask and default gateway IP address. This section provides an example ofthe configuration required to integrate the V7111 gateway into a VLAN and multiple IPsnetwork using the Embedded Web Server (see Integrating Using the Embedded WebServer) and ini file (see Integrating Using the ini File). Table 84 shows an exampleconfiguration that is implemented in the following sections.
