Article ID: 178538 - View products that this article applies to.
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Per RFC 1597: Section 3: Private Address Space, The Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of the IP address space for private networks: 10.0.0.0 - 10.255.255.255 , 172.16.0.0 - 172.31.255.255, and 192.168.0.0 - 192.168.255.254.
These network IDs and the associated IP addresses may be used freely in any internal network scheme and will not affect interoperability with the Internet as a whole. In particular, the class C range is the preferred range to use when configuring the async connectors of Microsoft Exchange Server.
Each async interface on a Windows NT Server computer requires two (2) ip address; one for the server and one for the client of the particular session. The network ID of the async interface should be such that the async interface is on a different subnet than the network interface of the server; as such the unit is multihomed. Using a subnet mask of 255 in the third octet of the class C address allows 255 networks with 254 hosts on each network; this facilitates ease of planning and configuration.
For example, connect 3 Exchange sites through the Dynamic Remote Access Service (RAS) connector. Each Exchange Server computer has a single modem.
Article ID: 178538 - Last Review: October 7, 2013 - Revision: 3.3