NEC N8406-022A Reference Manual
Also see for N8406-022A: Application guide
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Contents
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Command Line Interface 87Forwarding Manipulation optionsCommand: /maint/fdb[FDB Manipulation Menu]find - Show a single FDB entry by MAC addressport - Show FDB entries for a single portvlan - Show FDB entries for a single VLANdump - Show all FDB entriesadd - Add a FDB entrydel - Delete a FDB entryclear - Clear entire FDB, then re-add static entriesThe Forwarding Database (FDB) Manipulation Menu can be used to view information and to delete a MAC addressfrom the Forwarding Database or clear the entire Forwarding Database. This is helpful in identifying problemsassociated with MAC address learning and packet forwarding decisions.The following table describes the FDB Manipulation Menu options.Table 87 FDB Manipulation Menu optionsCommand Usagefind <MAC address> [<1-4095>] Displays a single database entry by its MAC address. You are promptedto enter the MAC address of the device. Enter the MAC address usingone of the following:• xx:xx:xx:xx:xx:xx format (for example: 08:00:20:12:34:56 )• xxxxxxxxxxxx format (for example: 080020123456).port <port number> Displays all FDB entries for a particular port.vlan <1-4095> Displays all FDB entries on a single VLAN.dump Displays all entries in the Forwarding Database.add Adds a FDB entry.rem Removes a FDB entry.clear Clears the entire Forwarding Database from switch memory, then addsthe static entries to the Forwarding Database.Debugging optionsCommand: /maint/debug[Miscellaneous Debug Menu]tbuf - Show MP trace buffersnap - Show MP snap (or post-mortem) trace bufferclrcfg - Clear all flash configsThe Miscellaneous Debug Menu displays trace buffer information about events that can be helpful in understandingswitch 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 occursIf the switch resets for any reason, the management processor (MP) trace buffer is saved into the snap trace bufferarea. The output from these commands can be interpreted by NEC technical support.The following table describes the Miscellaneous Debug Menu options:Table 88 Miscellaneous Debug Menu optionsCommand Usagetbuf Displays the management processor trace buffer. Header information similar to the following isshown:MP trace buffer at 13:28:15 Fri May 25, 2002; mask: 0x2ffdf748The buffer information is displayed after the header.snap Displays the management processor snap (or post-mortem) trace buffer. This buffer containsinformation 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 factorydefault settings. |
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