in the GPRS core network, using the IP network layer in the agreement, each of the SGSN and GGSN have an internal IP address for the backbone of the communications. Each terminal in the GPRS network to connect with external data, such as the IP network, you need the IP address, therefore, IP address of the GPRS network is an important resource for network equipment and user identification, a good address for the network planning Development and maintenance is very important.
GPRS network IP address can be divided into two kinds: internal GPRS core network and the Internet address linked to the need to address.
for the first SGSN, GGSN, BG, DNS, DHCP, CG, network equipment, used by all routers, as well as equipment such as WAP gateway equipment can be used RFCl597 documents provided to retain the address.
10.0.0.0 --- 10.255.255.255 (1 Class A-address);
172.16.0.0 --- 172.31.255.255 (16 months linked to the address of the B-type);
192.168.0.0 --- 192.168.255.255 (256 months linked to the C-type address).
second type IP addresses for public addresses. In order to address these is required for Internet and Internet addresses. If the GPRS network operators to carry only as a network connected with the Internet, public IP provided by the IAP; if operators at the same time as the ISP service, you need to apply for CNNICC public IP address.
address the general distribution as follows:
a. the distribution of an address as far as possible To meet the needs of address in a row as far as possible in order to reduce the size of the routing table.
b. address a need to standardize the management, distribution according to need and to ensure effective use. Address the allocation of the number of applications according to the IP address of the utilization of the initial 25% a year to reach more than 50% of the principle of distribution.
c. network equipment (routers and GGSN) to support the non-technical types of domain routing (CIDR, Class Inter Domain Routing) and variable subnet mask (VLSM, Variable Length Subnet Mask) technology, the network host Fewer than 127 general-use of network address allocation, and in accordance with the actual application of the subnet mask to determine the number of hosts.
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the best domestic GPRS equipment manufacturer
Xiamen Sang-jung DDD Technology Co., Ltd. ; Zip Code: 361009
Address: Xiamen, Kaiyuan Qu Science and Technology Parks, 6th Floor,
phone : 86 592 5932 711
after-sale service telephone: 86 592 5934 719,5934720
Fax: 86 592 5932 722
reservation address is divided into three sections:
Mail: sales@sangrong.com
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