Getting Started With Vlans And Multiple Ips - 3Com VCX v7111 User Manual

Application
Syslog
ICMP
ARP listener
SNMP Traps
DNS client
NTP
NFS
Operation
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), this
ID (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 parameter
VlanSendNonTaggedOnNative is set to 1, the gateway sends regular packets (with no
VLAN tag).
Incoming packets (from the switch to the gateway):
The switch sends all packets intended for the gateway (according to the switch's
configuration) to the gateway without altering them. For packets whose VLAN ID is
identical 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 are
accepted only if the gateways native VLAN ID is identical to the VLAN ID of one of its
interfaces. In this case, the packets are sent to the relevant interface. All other packets are
rejected.

Getting Started with VLANS and Multiple IPs

By default the V7111 gateway operates without VLANs and multiple IPs, using a single IP
address, subnet mask and default gateway IP address. This section provides an example of
the configuration required to integrate the V7111 gateway into a VLAN and multiple IPs
network using the Embedded Web Server (see
Server) and ini file (see
configuration that is implemented in the following sections.
®
3Com VCX V7111 VoIP Gateway User Guide
Traffic / Network Types
Management
Management
Determined by the initiator of the
request
Management
EnableDNSasOAM
EnableNTPasOAM
NFSServers_VlanType in the
NFSServers table
Integrating Using the ini
Class-of-Service (Priority)
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Determined by the initiator of the
request
Network
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Network
Depends on the traffic type:
Control:
Management:
Gold
Integrating Using the Embedded Web
File). Table 84 shows an example
Premium control
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