132 CHAPTER 13: IP PERFORMANCE CONFIGURATIONn ■ The device stops sending "network unreachable" and "source route failure"ICMP error packets after sending ICMP destination unreachable packets isdisabled. However, other destination unreachable packets can be sentnormally.■ The device stops sending "TTL timeout" ICMP error packets after sending ICMPtimeout packets is disabled. However, "reassembly timeout" error packets willbe sent normally.Displaying andMaintaining IPPerformanceDisable sending ICMP timeout packets undo ip ttl-expires RequiredEnabled by default.Disable sending ICMP destination unreachablepacketsundo ip unreachables RequiredEnabled by default.To do… Use the command… RemarksTo do… Use the command… RemarksDisplay current TCP connection state display tcp status Available inany viewDisplay TCP connection statistics display tcp statisticsDisplay UDP statistics display udp statisticsDisplay IP packets statistics display ip statisticsDisplay ICMP flows statistics display icmp statisticsDisplay socket information display ip socket [ socktypesock-type ] [ task-id socket-id ]Display FIB forward information display fib [ | { begin | include |exclude } string | acl acl-number |ip-prefix ip-prefix-name ]Display FIB forward information matchingthe specified destination IP addressdisplay fib ip-address1 [ { mask1| mask-length1 } [ ip-address2{ mask2 | mask-length2 } |longer ] | longer ]Display statistics about the FIB items display fib statisticsClear statistics of IP packets reset ip statistics Available inuser viewClear statistics of TCP connections reset tcp statisticsClear statistics of UDP flows reset udp statistics
