Cisco 128 to 256 MB SODIMM DRAM MEM180X-128U256D 数据表
产品代码
MEM180X-128U256D
Data Sheet
© 2009 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
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Figure 2. Securing Small Branch Office with a Cisco 1800 Series Fixed-Configuration Router
Highly Available Internet Connection
The Cisco IOS Software Advanced IP Services feature set offers basic and advanced routing capabilities to deliver
failover protection and load balancing. These capabilities include Border Gateway Protocol (BGP), Open Shortest
Path First (OSPF) Protocol, Enhanced Interior Gateway Routing Protocol (EIGRP), and Routing Information Protocol
(RIP) routing protocols along with dial-on-demand routing (DDR) and reliable static routing using object tracking.
Each of the Cisco 1800 Series fixed-configuration routers is equipped with either an ISDN BRI, V.92 analog modem,
or Ethernet port for secondary WAN backup connection. If the primary DSL, cable, or Ethernet-access WAN is
disconnected for some reason, the router will detect this failure and will fail over to the secondary backup WAN. As
Figure 3 and 4 demonstrate, the Cisco 1800 Series fixed-configuration routers help enable customers to deliver high-
performance and high-availability, mission-critical business applications.
Figure 3. High-Availability Small Branch Network with Cisco 1811 or 1812 Router
Figure 4. High-Availability Small Branch Network with Cisco 1801, 1802, or 1803 Router