2009年5月20日星期三

blogspot又无法连上了

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只能用代理,太变态了,留言以记之。。。

翻墙不是我的性格,还是自然点好!


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2009年5月15日星期五

Service Assurance Agent (SAA)

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在CISCO系统中是原来"响应时间报告器Response Time Reporter (RTR)"的新名称。

RTR允许用户监视网络性能,网络资源和通过衡量响应时间来判断应用程序性能,利用这个特征可以进行故障排除,问题通告,问题分析等操作。要验证是否似乎用了RTR responder,可使用如下命令验证:

Router>show rtr responder
RTR Responder is: Enabled
Number of control messages received: 0 Number of errors: 0
Recent sources:
Recent error sources:




Service Assurance Agent (SAA) is embedded software within Cisco IOS devices that performs active monitoring. Active monitoring is the generation and analysis of traffic to measure performance between Cisco IOS devices or between Cisco IOS devices and network application servers. Active monitoring provides a unique set of performance measurements: network delay or latency, packet loss, network delay variation (jitter), availability, one-way latency, website download time, as well as other network statistics. SAA can be used to measure network health, verify service level agreements, assist with network troubleshooting, and plan network infrastructure. SAA is supported on almost all Cisco IOS devices. Enterprises and service providers routinely deploy SAA for network performance statistics and within IP networks that utilize quality of service (QoS), Voice over IP, security, Virtual Private Network (VPNs), and Multiprotocol Label Switching (MPLS). SAA provides a scalable and cost effective solution for IP service level monitoring and eliminates the deployment of dedicated active monitoring devices by including the "probe" capabilities within Cisco IOS.

The SAA product has changed name to Cisco IOS IP SLAs


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