272 Rockwell Automation Publication 1783-UM007G-EN-P - February 2017
Chapter 7 Configure Switch Features
8. (Optional). To configure traffic permits and packet fixups, see
Configure Traffic Permits and Fixups.
9. On the NAT window, click Submit.
Private IP Address Type a private IP address:
• To translate one address, type a unique private address to represent the device.
• To translate a range of addresses, type the first address in the range of sequential addresses.
• To translate addresses in a subnet, type a unique, starting private address to represent the devices. This address must correspond to the size of the subnet
mask to translate.
Subnet Mask Starting Private Subnet Address
255.255.0.0 The last two octets must end in 0.
EXAMPLE: 192.168.0.0
255.255.255.0 The last octet must end in 0.
EXAMPLE: 192.168.1.0
255.255.255.128 The last octet must end in 0 or 128.
EXAMPLE: 192.168.1.0 or 192.168.1.128
255.255.255.192 The last octet must in one of the following: 0, 64, 128, 192.
EXAMPLE: 192.168.1.64
255.255.255.224 The last octet must in one of the following: 0, 32, 64, 96, 128, 160, 192, 224.
EXAMPLE: 192.168.1.32
255.255.255.240 The last octet must in one of the following: 0, 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224, 240.
EXAMPLE: 10.200.1.16
Type Choose one of these values:
• Single—Translate one address.
• Range—Translate a range of addresses.
• Subnet—Translate all addresses in the public subnet or a portion of the public subnet.
Range Type the number of addresses to translate. This field is available only if you choose Range in the Type field.
Valid values: 2…128
Default value = 1
IMPORTANT: Each address in the range counts as one translation entry. The switch supports a maximum of 128 translation entries.
Subnet Mask Type the subnet mask for the addresses to translate.
Valid values:
• Class B: 255.255.0.0
• Class C: 255.255.255.0
• Portion of Class C:
– 255.255.255.128 (provides 128 addresses per translation entry
– 255.255.255.192 (provides 64 addresses per translation entry
– 255.255.255.224 (provides 32 addresses per translation entry
– 255.255.255.240 (provides 16 addresses per translation entry)
Field Description
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