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參數(shù)資料
| 型號： | MTC50150-TB-C2 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | ADSL GATEWAY PROCESSOR |
| 中文描述： | 寬帶網(wǎng)關(guān)處理器 |
| 文件頁數(shù)： | 5/20頁 |
| 文件大小： | 151K |
| 代理商： | MTC50150-TB-C2 |
5/20
MTC50150
7.3 Network Services
7.3.1 ILMI
Embedded software provides an ILMI 4.0 implementation which handles address registration (switch to
end device) and notification (end device to switch) as well as auto-configuration. ILMI uses SNMP over
AAL-5 for transport.
7.3.2 UNI Signaling
Stackware includes support for standard ATM UNI signaling standards, including UNI 3.1.
7.3.3 RIP1/RIP2 IP Router
IP router software provides implementations of RIP1 and RIP2. The IP router is an IPv4 router. Support
for new station discovery is provided.
7.4 TCP/IP Socket
7.4.1 TCP
Transport Control Protocol (TCP) is accessed using a standard socket interface to allow easy integration
of existing Layer 3 and higher software into the basic protocol stack.
7.4.2 IP
Internal protocol: IP and IP routing are both part of the network layer (layer 3). IP is actually responsible
for delivering packets for which the router defines the direction.
7.4.3 DHCP RFC 2131, 2132
Dynamic Host Control Protocol (DHCP) provides both client & server functions. The client is typically used
to obtain an IP address from an ISP. The DHCP server is used to assign local IP client devices with des-
ignated IP addresses. The server lends addresses for a limited time. NAT registers local terminal IP ad-
dresses and maintains a translation table to allow sending and receiving data on the public network by
sharing only the residential gateway assigned public IP address.
7.4.4 NAT: RFC1631, 2663
The Network Address Translator (NAT) implements Network and Port Address Translation (NAT/PAT).
NAT allows a single public IP address on the WAN side to be shared among many devices on the LAN
side. Combined with a DHCP server local devices are assigned a private address, hidden to the public
internet and changed frequently. The combination of DHCP and NAT provides a powerful isolation barrier
to external assault. NAT PAT features a number of AGL.
7.5 ATM Encapsulation and spanning-tree
RFC 1483/2684 provides a simple robust method of connecting end stations over an ATM network. User
data in the form of Ethernet packets are encapsulated into AAL-5 PDUs for transport over ATM. RFC
1483/2684 provides no AAA function (authentication, authorization & accounting).
7.5.1 Spanning-tree bridge (802.1d)
Bridge module provides a transparent bridge between two physically disjoint networks with spanning-tree
option. The spanning-tree algorithm handles redundancy and also increases robustness. It provides high
performance as well as flexibility to group interfaces for example to bridge the WAN only to LAN interfaces
but not to other WAN interfaces.
The ATM driver passes data between application software tasks on the processor and a physical AAL5
hardware block.
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