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回收CISCO HWIC VWIC WIC VIC系列

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HWIC-8AS-RS232思科原装线卡模块
发布时间:2013-12-3 15:49:16 点击量:
HWIC-8AS-RS232思科原装线卡模块产品简介
Serial and asynchronous modules provide highly flexible connections for Cisco®1800, 1900, 2800, 2900, 3800, and 3900 Series Integrated Services Routers (ISRs). These modules HWIC-8AS-RS232思科原装线卡模块help customers enable applications such as WAN aggregation, transport for traditional protocols, console servers, and dial access servers. Customers can mix and match modules to tailor cost-effective solutions for common networking problems such HWIC-8AS-RS232思科原装线卡模块as remote network management, external dial-modem access, low-density WAN aggregation, transport for traditional protocols, and high-port-density support.
Cisco offers the following serial and asynchronous modules:

• HWIC-8AS-RS232思科原装线卡模块 High-Speed WAN Interface Card (HWIC-4T): Four high-speed serial ports (Figure 1A)

• Cisco 4-Port Asynchronous/Synchronous High-Speed WAN Interface Card (HWIC-4A/S): Four low-speed synchronous/asynchronous ports (Figure 1B)

• Cisco 8-Port Asynchronous/Synchronous High-Speed WAN Interface Card (HWIC-8A/S-232): Eight low-speed synchronous/asynchronous ports, EIA-232 only (Figure 1C)

• Cisco 8-Port Asynchronous High-Speed WAN Interface Card (HWIC-8A): Eight asynchronous EIA-232 ports (Figure 1D)

• Cisco 16-Port Asynchronous High-Speed WAN Interface Card (HWIC-16A): Sixteen asynchronous EIA-232 ports (Figure 1E)

• Cisco 32-Port Asynchronous Serial Service Module (SM-32A): Thirty-two asynchronous EIA-232 ports Figure 1F)

Figure 1. Cisco Serial and Asynchronous Modules

Common Applications HWIC-8AS-RS232思科原装线卡模块

These highly flexible interface cards enable several important applications.

WAN Aggregation HWIC-8AS-RS232思科原装线卡模块

Serial interfaces can be used to aggregate WAN connections from remote sites. With support for serial speeds of up to 8 Mbps per port, the Cisco 4-Port Serial HWIC is well suited for low- and medium-density WAN aggregation (Figure 2).

Figure 2. WAN Aggregation HWIC-8AS-RS232思科原装线卡模块

Transport for Traditional Protocols

Serial and synchronous/asynchronous ports are well suited for transporting traditional traffic across a TCP/IP network. This capability enables network convergence (Figure 3), eliminating the need for costly separate leased lines for this traffic. Traditional protocols supported by Cisco IOS® Software include:

• Systems Network Architecture (SNA) and Synchronous Data Link Control (SDLC) Protocol

• Binary Synchronous Communications (Bisync) Protocol

• X.25 Protocol

Figure 3. Network Convergence

Console and Terminal Server

Asynchronous ports provide highly flexible connections that allow access to EIA-232 devices across a TCP/IP network. This capability allows out-of-band management of console and craft ports, allowing the network operator to manage a network of remote devices from a central location (Figure 4).

Figure 4. Managing Multiple Remote Devices from a Single Location

Dial Access Server

Asynchronous HWICs can connect to external dial modems to provide low-density dial access servers (Figure 5).

Figure 5. Dial Access Server

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