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Cisco 1720 Modular Access Router Flexible Internet Access for Small and Medium-Sized Businesses and Small Branch offices
Flexible Internet Access for Small and Medium-Sized Businesses and Small Branch Offices
Flexible Internet Access for Small and Medium-Sized Businesses and Small Branch Offices
Flexible Internet Access for Small and Medium-Sized Businesses and Small Branch Offices
The Cisco 1720 access router offers the following features:
- One autosensing 10/100 Fast Ethernet port
- Two WAN interface card (WIC) slots that support the same data WAN interface cards as the Cisco 1600, 2600, and 3600 routers
- One auxiliary (AUX) port (up to 115.2 kbps asynchronous serial)
- One console port
- A RISC processor to support high-performance encryption and broadband services
- One internal expansion slot for support of a hardware-assisted encryption card (up to T1/E1)
- One 10/100BaseTX Fast Ethernet port (RJ45)
- Automatic speed detection
- Automatic duplex negotiation
- Two WAN interface card slots
- Supports any combination of up to two WAN interface cards as shown in Table 1: WIC-1T, WIC-2T, WIC-1DSU-56K4, WIC-1DSU-T1, WIC-1B-S/T, WIC-1B-U, WIC-2A/S
- Synchronous Serial Interfaces on Serial WAN Interface Cards
- Interface speed: up to 2.0 Mbps (T1/E1)
- Synchronous serial protocols: PPP, HDLC, LAPB, IBM/SNA
- Synchronous serial WAN services: Frame Relay, X.25, SMDS
- Synchronous serial interfaces supported on the WIC-1T, WIC-2T, and WIC-2A/S cards: V.35, EIA/TIA-232, EIA/TIA-449, X.21, EIA-530
- Asynchronous Serial Interfaces on Serial WAN Interface Cards
- Interface speed: up to 115.2 kbps
- Asynchronous serial protocols: Point-to-Point Protocol (PPP), Serial Line Internet Protocol (SLIP)
- Asynchronous interface: EIA/TIA-232
- ISDN WAN Interface Cards
- ISDN dialup and ISDN Leased Line (IDSL) at 64 and 128 kbps
- Encapsulation over ISDN Leased Line: Frame Relay and PPP
- One auxiliary (AUX) port
- RJ-45 jack with RS232 interface (plug compatible with Cisco 2500 series AUX port)
- Asynchronous serial DTE with full modem controls (CD, DSR, RTS, CTS)
- Asynchronous serial data rates up to 115.2 kbps
- One console port
- RJ-45 jack with RS232 interface (plug compatible with Cisco 1000/1600/2500 series console ports)
- Asynchronous serial DTE
- Transmit/receive rates up to 115.2 kbps (default 9600 bps, not a network data port)
- No hardware handshaking such as RTS/CTS
- One internal expansion slot for support of future hardware-assisted services such as encryption (up to T1/E1) and compression
- Motorola MPC860T PowerQUICC at 48 MHz
- Run from RAM architecture
- DRAM
- Onboard (fixed/default): 16 MB
- One DIMM slot; available DIMM sizes: 4, 8, 16, 32 MB
- Maximum DRAM: 48 MB
- Flash
- Type: onboard (socketed) mini-flash card
- Default: 4 MB
- Available sizes: 4, 8, 16 MB
- Maximum Flash: 16 MB
- Support Dual Flash Bank
Cisco 1721 and Cisco 1720 Modular Access Routers
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dungtran@nettech.vn
