Ip Address Notation - Cisco ASR 5500 System Administration Manual

System Operation and Configuration
• Configuration files can be stored in any of the following locations:
• Each time you save configuration changes you made during a CLI session, you can save those settings

IP Address Notation

When configuring a port interface via the CLI you must enter an IP address. The CLI always accepts an IPv4
address, and in some cases accepts an IPv6 address as an alternative.
For some configuration commands, the CLI also accepts CIDR notation. Always view the online Help for the
CLI command to verify acceptable forms of IP address notation.
IPv4 Dotted-Decimal Notation
An Internet Protocol Version 4 (IPv4) address consists of 32 bits divided into four octets. These four octets
are written in decimal numbers, ranging from 0 to 255, and are concatenated as a character string with full
stop delimiters (dots) between each number.
For example, the address of the loopback interface, usually assigned the host name localhost, is 127.0.0.1. It
consists of the four binary octets 01111111, 00000000, 00000000, and 00000001, forming the full 32-bit
address.
IPv4 allows 32 bits for an Internet Protocol address and can, therefore, support 2
IPv6 Colon-Separated-Hexadecimal Notation
An Internet Protocol Version 6 (IPv6) address has two logical parts: a 64-bit network prefix, and a 64-bit host
address part. An IPv6 address is represented by eight groups of 16-bit hexadecimal values separated by colons
(:).
A typical example of a full IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334
The hexadecimal digits are case-insensitive.
The 128-bit IPv6 address can be abbreviated with the following rules:
When you apply a configuration file after the boot process, the file does not delete the
Important
configuration loaded as part of the boot process. Only those commands that are duplicated
are overwritten.
• USB Memory Stick: Supported via a USB port on the active MIO (/usb1).
• Network Server: Any workstation or server on the network that the system can access using the
Secure File Transfer Protocol (SFTP). This is recommended for large network deployments in
which multiple systems require the same configuration.
• /flash: a solid-state device with limited storage.
• /hd-raid: internal RAID storage.
to a file which you can use as a configuration file.
ASR 5500 System Administration Guide, StarOS Release 21.5
IP Address Notation
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(4,294,967,296) addresses.
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