Web/EMS: IP Address
[InterfaceTable_IPAddres]
Defines the IPv4 IP address in dotted-decimal notation.
Notes:
 Each interface must be assigned a unique IP address
(i.e., two interfaces may not share the same address
space, or even part of it).
 When booting using BootP/DHCP protocols, an IP
address is obtained from the server. This address is used
as the OAMP address for the initial session, overriding
the address configured in the Multiple Interface table. The
address configured for OAMP applications in this table
becomes available only when booting from flash again.
This enables the device to operate with a temporary
address for initial management and configuration while
retaining the address to be used for deployment.
Web/EMS: Prefix Length
[InterfaceTable_PrefixLength]
Defines the prefix length of the related IP address. This is a
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. For example,
192.168.0.0/16 is synonymous with 192.168.0.0 and subnet
255.255.0.0. This CIDR 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-
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.
The prefix length for IPv4 can range from 0 to 30.
Note: Subnets of different interfaces must not overlap in any
way. For example, defining two interfaces with 10.0.0.1/8
and 10.50.10.1/24 is invalid. Each interface must have its
own address space.
Web/EMS: Gateway
[InterfaceTable_Gateway]
Defines the IP address of the default gateway for the
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.
Notes:
 A default gateway can be defined per interface.
 The default gateway's IP address must be in the same
subnet as the interface address.
 For configuring static routing rules (if required), see
'Configuring Static IP Routing' on page 116.
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