IP Addresses

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IBM® Connect:Direct® for Microsoft Windows accepts both IPv4 and IPv6 addresses. Wherever an IP address is specified in IBM Connect:Direct for Microsoft Windows, you can use either IPv4 or an IPv6 addresses.

IPv4 Addresses

IPv4 supports 232 addresses written as 4 groups of dot-separated 3 decimal numbers (0 through 9), for example, 10.23.107.5.

IPv6

IPv6 supports 2128 addresses written as 8 groups of colon-separated 4 hexadecimal digits, for example, 1001:0dc8:0:0:0:ff10:143e:57ab. The following guidelines apply to IPv6 addresses:
  • If a four-digit group contains zeros (0000), the zeros may be omitted and replaced with two colons (::), for example: 
    2001:0db8:85a3:0000:1319:8a2e:0370:1337
    can be shortened as 
    2001:0db8:85a3::1319:8a2e:0370:1337
  • Any number of successive 0000 groups may be replaced with two colons (::), but only one set of double colons (::) can be used in an address. For example: 
    001:0db8:0000:0000:0000:0000:1319:58ab
    can be shortened as: 
    2001:0db8:0000:0000::1319:58ab
  • Leading zeros in a four-zero group can be left out (0000 can be shortened to 0). For example: 
    2001:0db8:0000:0000::1319:58ab
    can be shortened as: 
    2001:0db8:0:0:0:0:1319:58ab
  • You can write a sequence of 4 bytes that occur at the end of an IPv6 address in decimal format using dots as separators. For example: 
    ::ffff:102:304
    or 
    0000:0000:0000:0000:0000:ffff:0102:0304
    Can be written as: 
    ::ffff:1.2.3.4

This notation is useful for compatibility addresses.