Command Reference Guide

N8406-022A 1Gb Intelligent L2 Switch Command Reference Guide (AOS) 119
Debugging options
Command: /maint/debug
[Miscellaneous Debug Menu]
tbuf - Show MP trace buffer
snap - Show MP snap (or post-mortem) trace buffer
clrcfg - Clear all flash configs
The Miscellaneous Debug Menu displays trace buffer information about events that can be helpful in understanding
switch operation. You can view the following information using the Debug Menu:
Events traced by the management processor (MP)
Events traced to a buffer area when a reset occurs
If the switch resets for any reason, the management processor (MP) trace buffer is saved into the snap trace buffer
area. The output from these commands can be interpreted by NEC technical support.
The following table describes the Miscellaneous Debug Menu options:
Table 127 Miscellaneous Debug Menu options
Command
Usage
tbuf
Displays the management processor trace buffer. Header information similar to the following is
shown:
MP trace buffer at 13:28:15 Fri May 25, 2002; mask: 0x2ffdf748
The buffer information is displayed after the header.
snap
Displays the management processor snap (or post-mortem) trace buffer. This buffer contains
information traced at the time that a reset occurred.
clrcfg
Deletes all flash configuration blocks. The next time the switch is rebooted, it returns to the factory
default settings.
ARP cache options
Command: /maint/arp
[Address Resolution Protocol Menu]
find - Show a single ARP entry by IP address
port - Show ARP entries on a single port
vlan - Show ARP entries on a single VLAN
addr - Show ARP entries for switch's interfaces
dump - Show all ARP entries
clear - Clear ARP cache
The following table describes the Address Resolution Protocol Menu options:
Table 128 Address Resolution Protocol Menu options
Command
Usage
find <IP address>
Shows a single ARP entry by IP address. For example,
192.4.17.35
port <port number>
Shows ARP entries on a single port.
vlan <1-4095>
Shows ARP entries on a single VLAN.
addr
Shows the list of IP addresses that the switch will respond
to for ARP requests.
dump
Shows all ARP entries.
clear
Clears the entire ARP list from switch memory.
NOTE: To display all ARP entries currently held in the switch, or a portion according to one of the options
listed on the menu above (find, port, vlan, dump), see the ―ARP information‖ section of the ―Information Menu‖
chapter.