Dell Force10 E1200i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 882
Trace Lists, Configuration Tasks for Trace Lists
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www.dell.com | support.dell.com FTOS(conf)#ip telnet server enable FTOS(conf)#no ip telnet server enable Trace Lists e The Trace Lists feature is supported only on the E-Series: You can log packet activity on a port to confirm the source of traffic attacking a system. Once the Trace list is enabled on the system, you view its traffic log to confirm the source address of the attacking traffic. In FTOS, Trace lists are similar to extended IP ACLs, except that Trace lists are not applied to an interface. Instead, Trace lists are enabled for all switched traffic entering the system. The number of entries allowed per trace list is 1K. In the E-Series, you can create a trace filter based on any of the following criteria: • Source IP address • Destination IP address • Source TCP port number • Destination TCP port number • Source UDP port number • Destination UDP port number For trace lists, you can match criteria on specific or ranges of TCP or UDP ports or established TCP sessions. Note: If there are unresolved next-hops and a trace-list is enabled, there is a possibility that the traffic hitting the CPU will not be rate-limited. When creating a trace list, the sequence of the filters is important. You have a choice of assigning sequence numbers to the filters as you enter them, or FTOS assigns numbers in the order the filters were created. For more information on sequence numbering, refer to Chapter 21, IP Access Control Lists, Prefix Lists, and Route-maps, on page 419. Configuration Tasks for Trace Lists The following configuration steps include mandatory and optional steps. • Creating a trace list (mandatory) • Apply trace lists (mandatory) For a complete listing of all commands related to trace lists, refer to the Security chapter in the FTOS Command Reference. 882 | Security
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