DeWalt 1 appendix Number, Subnet Code IP Addresses

Chapter 2 Setting Up BBSM Hotspot

Running the Setup Wizard

Table 2-2 Enter External and Internal IP Addresses Field Descriptions

			Field		Description
			External Network ID		Enter the external network IP address block assigned by your ISP. The number
					after the slash is the subnet code for the number of IP addresses available in the
					block.
			Default Gateway		This IP address is automatically generated based on the external network ID
					that you entered. You cannot change the first three sets of numbers in this
					address. This IP address is the address of the gateway (router) assigned by the
					ISP and used to access the Internet. Here’s what can and cannot be changed in
					this field:
					• You cannot change the first three sets of numbers in the IP address.
					• The fourth set defaults to the number 1. You can change this fourth octet
					after the Setup Wizard populates the Default Gateway based on the
					External Network ID.
					Your router needs to be configured for the internal network to point to the
					external NIC of the BBSM Hotspot server. If you are using a private IP address,
					you will also need to create a network address translation (NAT) pool for end
					users and one-to-one NAT statements for remote access to internal network
					devices.
			Internal Network ID		This is the Network ID for the subnet that end users use to connect to the BBSM
					Hotspot network and, through it, the Internet. The internal subnet consists of the
					network devices, end-user clients (such as laptops and PDAs), and the BBSM
					Hotspot internal NIC. The number after the slash is the subnet code for the
					number of IP addresses available in the block.
					You can enter your own private network ID, or you can input a public network
					ID.
			Primary DNS Server		Enter the IP address for the primary domain name system (DNS) server
					provided by your ISP. Because BBSM Hotspot is not configured as a DNS
					server, DNS forwarding is enabled to forward all DNS requests to a remote
					DNS server. BBSM Hotspot acts as a DNS forwarder for end-user DNS requests
					as well as its own DNS requests. These requests, such as www.cisco.com, are
					resolved into IP addresses so the Internet routers can locate the web server with
					the content.
			Table 2-3 Subnet Code Conversions
				Number of
			Subnet Code	IP Addresses
/29				6
/28				14
/27				30
/26				62
/25				126
/24				254
		Cisco BBSM Hotspot 1.0 User Guide
	2-6				78-15293-01