AudioCodes Mediant 2000, User Manual

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SIP User's Manual 56 Document #: LTRT-68808
Mediant 2000
Parameter Description
Prefix Length
This column lists the number of ‘1’ bits in the subnet mask (i.e., replaces the
standard dotted-decimal representation of the subnet mask for IPv4
interfaces). For example: A subnet mask of 255.0.0.0 is represented by a
prefix length of 8 (i.e., 11111111 00000000 00000000 00000000), and a
subnet mask of 255.255.255.252 is represented by a prefix length of 30 (i.e.,
11111111 11111111 11111111 11111100).
The prefix length is a Classless Inter-Domain Routing (CIDR) style
presentation of a dotted-decimal subnet notation. The CIDR-style
presentation is the latest method for interpretation of IP addresses.
Specifically, instead of using eight-bit address blocks, it uses the variable-
length subnet masking technique to allow allocation on arbitrary-length
prefixes (refer to http://en.wikipedia.org/wiki/Classless_Inter-
Domain_Routing for more information).
The prefix length values range from 0 to 31.
Gateway
Defines the IP address of the default gateway used by the device.
Notes:
ƒ
Only one default gateway can be configured for the device and it must be
configured on an interface for Media traffic. All other table entries for this
column must have the value 0.0.0.0.
ƒ
The default gateway's IP address must be in the same subnet as the
interface address.
ƒ
For configuring additional routing rules for other interfaces, refer to
''Configuring the IP Routing Table'' on page
62 .
VLAN ID
Defines the VLAN ID for each interface. When using VLANs, the VLAN ID
must be unique for each interface. Incoming traffic tagged with this VLAN ID
is routed to the corresponding interface, and outgoing traffic from that
interface is tagged with this VLAN ID.
Interface Name
Defines a string (up to 16 characters) to name this interface. This name is
displayed in management interfaces (Web, CLI and SNMP) for better
readability and has no functional use.
Note:
The interface name is a mandatory parameter and must be unique for
each interface.
General Parameters
VLAN Mode
[VlANMode]
For a description of this parameter, refer to ''Configuring the IP Settings'' on
page
50 .
Native VLAN ID
[VLANNativeVlanID]
Defines the VLAN ID to which untagged incoming traffic is assigned.
Outgoing packets sent to this VLAN are sent only with a priority tag (VLAN
ID = 0).
When this parameter is equal to one of the VLAN IDs in the Interface Table
(and VLANs are enabled), untagged incoming traffic is considered as an
incoming traffic for that interface. Outgoing traffic sent from this interface is
sent with the priority tag (tagged with VLAN ID = 0).
When this parameter is different from any value in the 'VLAN ID' column in
the Interface Table, untagged incoming traffic is discarded, and all outgoing
traffic is tagged.
Note:
If this parameter is not set (i.e., default value is 1), but one of the
interfaces has a VLAN ID configured to 1, this interface is still considered the
‘Native’ VLAN. If you do not wish to have a ‘Native’ VLAN ID and want to use
VLAN ID 1, set this parameter to a value other than any VLAN ID in the
table.