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#ATT ROUTER SET UP INSTALL#

Note: In this example, you are seeing screen shots from an ARRIS router model. Use the following chart to determine the correct subnet to use. Gateway/RG IP address is always an even number. Block of 128: (125 are usable by the customer).Block of 64: (61 are usable by the customer).Block of 32: (29 are usable by the customer).Block of 16: (13 are usable by the customer).

Block of 08: (05 are usable by the customer).

However, any IP address between the first, second to the last, and the last IP addresses are eligible to assign to local devices. The customer cannot assign these three IP addresses to any of their local devices. Always assign the second to the last as the gateway/RG. Note: In all Static IP block options, always assign the first and last IP address as the network base address and the broadcast address. This is the broadcast address and not usable as a host address. This is the network base address is not usable as a host address. In this example, the customer has a block of eight (Static IP Addresses): Note: An AT&T Static IP cannot be provisioned with the Motorola ATT modem or the Motorola 2310-51 modem.

The customer needs one of the following RGs:

#ATT ROUTER SET UP INSTALL#

The customer should receive the CIDR block when ordering service and can be provided by customer care.Įnter the CIDR block in your favorite CIDR calculator or you can use this CIDR calculator at your convenience.Įligible customers include consumer and business, new install and existing, AT&T Internet customers. However, some networks and ISPs do not provide a DHCP server in that case, the computer must have a static/fixed configuration.Ī Static IP is useful for consumers and many small businesses that have minor needs such as:Ī Static IP Calculator uses the customer's CIDR block to determine the correct static IP provisioning information for that customer's gateway.Ī CIDR block is the IP address/prefix size combination (e.g 144.157.80.0/29). Computers do not require static IP addresses for basic connectivity to the Internet and access to email. This is how most ISP and corporate networks are configured.Ī static or fixed IP address requires you to manually configure your IP address, along with other settings such as the gateway, the subnet mask, and DNS (Domain Name Service) settings into your network properties. How dynamic and static IP addresses differĪ dynamically assigned IP (Internet Protocol) address is one that is assigned by a DHCP (Dynamic Host Configuration Protocol) server, contributing to a transparent experience. Static IP Block sizes come in 8, 16, 32, 64, & 128 at this time This allows you to host a variety of applications that can be accessed remotely. Every time that you connect to the AT&T network the static IP address routes traffic to the computer or device that can be assigned an IP (such as a router or firewall). AT&T Static IPs are available as a bolt-on priced at a premium on top of the price of AT&T Internet service.Ī static IP address is an IP Address associated with your account that never changes and can be assigned to a specific device.