AudioCodes Mediant 3000 User Manual page 113

SIP User's Manual
10.3.1.1.2.1 IP Address and Prefix Length Columns
These columns allow the user to configure an IPv4/IPv6 IP address and its related subnet
mask.
The Prefix Length column holds the Classless Inter-Domain Routing (CIDR)-style
representation of a dotted-decimal subnet notation. The CIDR-style representation uses a
suffix indicating the number of bits which are set in the dotted-decimal format, in other
words, 192.168.0.0/16 is synonymous with 192.168.0.0 and a subnet 255.255.0.0 (Refer
to http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing for more information).
This CIDR notation lists the number of '1' bits in the subnet mask. So, a subnet mask of
255.0.0.0 (when broken down to its binary format) is represented by a prefix length of 8
(11111111 00000000 00000000 00000000), and a subnet mask of 255.255.255.252 is
represented by a prefix length of 30 (11111111 11111111 11111111 11111100).
Each interface must have its own address space. Two interfaces may not share the same
address space, or even part of it. The IP address should be configured as a dotted-decimal
notation.
For IPv4 interfaces, the prefix length values range from 0 to 30. For IPv6 interfaces, the
prefix length must be set to 64.
OAMP Interface Address when Booting using BootP/DHCP: When booting using
BootP/DHCP protocols, an IP address is obtained from the server. This address is used as
the OAMP address for this session, overriding the address configured using the Multiple
Interface table. The address specified for OAMP applications in the table becomes
available when booting from flash again. This allows the device to operate with a temporary
address for initial management and configuration while retaining the address to be used for
deployment.
10.3.1.1.2.2 Gateway Column
This column defines a default gateway for each interface. A default gateway can be defined
for each interface. When traffic is sent from this interface to an unknown destination (i.e.,
not in the same subnet and not defined for any static routing rule), it is forwarded to this
default gateway. The default gateway's address must be on the same subnet as the
interface address. A separate routing table allows configuring additional static routing rules.
See 'Configuring the IP Routing Table' on page
Note:
Application
Index
Type
0 OAMP
Media &
1
Control
A separate routing table allows configuring static routing rules. Configuring the following
routing enables OAMP applications to access peers on subnet 17.17.0.0 through the
gateway 192.168.0.1.
Version 6.4
In the example below, the default gateway (200.200.85.1) is available for the
applications allowed on that Interface #1. Outgoing management traffic
(originating on Interface #0) is never directed to this default gateway.
Table 10-3: Configured Default Gateway Example
Interface
IP Address
Mode
IPv4
192.168.085.214
Manual
IPv4
200.200.85.14
Manual
130 for more details.
Prefix
Gateway
Length
16 0.0.0.0
24 200.200.85.1
113
10. Network
VLAN Interface
ID Name
100 Mgmt
200 CntrlMedia
November 2011