Monitoring Menus

As durable and invincible as this Cisco product may sound, there are going to be instances where you may have to do some troubleshooting and monitoring to ensure the VPN Concentrator is functioning properly. In these rare instances, you can find a plethora of statistics at your disposal in the final division of the Concentrator Manager called Monitoring. In this section, you can look at current statistics by navigating to the multiple screens and clicking the Refresh icon under the Navigation Bar or by turning on the Monitor Refreshing option (refer back to "Ping and Monitor Refresh" section of this chapter). The following sections explore the common monitoring functions that you may encounter while managing the concentrator.

Routing Table

For the concentrator to forward traffic, it must know where to send those packets. The concentrator maintains a routing table so that it can know to which networks it has connectivity and to what interface packets should be sent to reach those networks. In the Monitoring | Routing Table screen, you can see all the networks that the concentrator has learned about. These routes are learned from directly connected interfaces, static routes, default gateways, and dynamic routes learned from RIP and OSPF. By monitoring the routing table, you can troubleshoot why devices do not have connectivity to other networks through the concentrator. In addition, this is a great starting point to troubleshoot or verify whether Reverse Route Injection (RRI) is properly injecting networks into the routing table and advertising them to neighbors via RIP or OSPF.



CSVPN Exam Cram 2 (Exam 642-511)
CCSP CSVPN Exam Cram 2 (Exam Cram 642-511)
ISBN: 078973026X
EAN: 2147483647
Year: 2002
Pages: 185

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