63To do… Use the command… Remarks2. Enable sending of ICMPtimeout packets ip ttl-expires enable RequiredDisabled by default.3. Enable sending of ICMPdestination unreachablepacketsip unreachables enable RequiredDisabled by default.The device stops sending “TTL timeout” ICMP error packets if the sending of ICMP timeout packets is disabled.However, “reassembly timeout” error packets will be sent normally.Displaying and maintaining IP performanceoptimizationTo do… Use the command… RemarksDisplay current TCP connection state display tcp statusAvailable in any viewDisplay TCP connection statistics display tcp statisticsDisplay UDP statistics display udp statisticsDisplay statistics of IP packets display ip statisticsDisplay ICMP statistics display icmp statisticsDisplay socket information display ip socket [ socktypesock-type ] [ task-id socket-id ]Display FIB informationdisplay fib [ | { begin | include| exclude } regular-expression | aclacl-number | ip-prefix ip-prefix-name ]Display FIB information matching thespecified destination IP addressdisplay fib ip-address [ mask |mask-length ]Clear statistics of IP packets reset ip statistics Available in user viewClear statistics of TCP connections reset tcp statistics Available in user viewClear statistics of UDP traffic reset udp statistics Available in user viewThe S5120-SI series Ethernet switches do not support the display fib ip-prefix ip-prefix-name command. That is,they do not display FIB entries matching a specified IP prefix list.
