NEC IP8800/S6600, IP8800/S3600 Checking statistical information, Check and Action for Port Status

3.Troubleshooting Functional Failures in Operation

Table 3-7: Check and Action for Port Status

No.	Port Status	Problem	Action
1	active up	The port is operating normally.	None
2	active down	Line failure occurred in the port.	According to the log of the port displayed by the show logging
			command, see the corresponding part in manual "Message Log
			Reference" and follow [Action] described.
3	inactive	The inactive state is set by one of the	• If the inactive state is set by standby link function of link
		following:	aggregation, it is a normal operation and therefore do not set the
		• The inactivate command	active state using the activate command. Check standby link
		• Standby link of link aggregation	function using the show channel-groupcommand with
		• BPDU guard function of a spanning	"detail" parameter specified.
		tree	• If the inactive state is set by the BPDU guard function of a
		• GSRP port-reset function	spanning tree, review the configuration of the opposite system.
		• Failure detected by the IEEE802.3ah/	Set up the configuration so that this system will not receive
			BPDU. Using the activate command, set the port to the active
		UDLD function
		• Port blocked by L2 loop detection	state. Check BPDU guard function using the show
		function	spanning-treecommand with "detail" parameter specified.
		• Port blocked by the storm control	• If the inactive state is set by the port reset function of GSRP, the
			active state automatically restores. Since this is a normal
		function
			operation, do not set to the active state using the activate
			command.
			• If the inactive state is set by detection of one-way link failure or
			L2 loop by IEEE802.3ah/UDLD function, see
			"3.18 Communication Failure on IEEE802.3ah/UDLD Function."
			After recovery from failure, use the activate command to
			activate the port.
			• When ports blocked by L2 loop detection function are in inactive
			status, change the configuration, which causes the loop. And then
			enable the inactive port by using the activate command. At
			this time, if loop-detection auto-restore-time has
			been set by the configuration command, the ports will change
			status to active status automatically.
			• If the inactive state is set by the storm control function, use the
			activate command to activate the port after LAN recovered
			from the storm.
			• If you want to set the active in any other case, confirm that the
			cable is connected to the port to be used and use the activate
			command to activate the port.
4	test	The port is in the line test by the test	To restart communication, execute the no test interfaces
		interfaces command.	command to stop the line test and activate the port with the
			activate command.
5	fault	Hardware of the port is faulty.	According to the log of the port displayed by the show logging
			command, see the corresponding part in manual "Message Log
			Reference" and follow [Action] described.
6	initialize	The port is being initialized.	Wait until initialization completes.
7	disable or	Configuration command shutdown is	Confirm that the cable is connected to the port to be used and enter
	locked	set.	configuration command no shutdown to activate the port.

(3) Checking statistical information

Enter the show port statistics command to check the number of sent/received packets and the number of discarded packets on all ports installed on this system.

28