HP GbE2c HP GbE2c Ethernet Blade Switch for c-Class BladeSystem ISCLI Referenc - Page 147
Maintenance Commands, Introduction, System maintenance, Forwarding Database maintenance
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Maintenance Commands Introduction The Maintenance commands are used for debugging purposes, enabling you to generate a technical support dump of the critical state information in the switch, and to clear entries in the Forwarding Database and the Address Resolution Protocol (ARP) and routing tables. These commands are available only from an administrator login. Dump information contains internal switch state data that is written to flash memory on the switch after any one of the following occurs: • The switch administrator forces a switch panic. The panic option causes the switch to dump state information to flash memory, and then causes the switch to reboot. • The switch administrator enters the switch reset key combination (Ctrl-Shift-6) on a device that is attached to the console port. • The switch detects a hardware or software problem that requires a reboot. The following sections provide detailed information and commands. System maintenance The System Maintenance commands are reserved for use by HP technical support. The options are used to perform system debugging. The following table describes the System Maintenance commands. Table 178 System Maintenance commands Command debug debug-flags Usage Sets the flags that are used for debugging purposes by HP technical support. Command mode: All except User EXEC Forwarding Database maintenance The Forwarding Database (FDB) Manipulation commands can be used to view information and to delete a MAC address from the Forwarding Database or clear the entire Forwarding Database. This is helpful in identifying problems associated with MAC address learning and packet forwarding decisions. The following table describes the FDB Manipulation commands. Table 179 FDB Manipulation commands Command Usage show mac-address-table address {} Displays a single database entry by its MAC address. You are prompted to enter the MAC address of the device. Enter the MAC address using one of the following: • xx:xx:xx:xx:xx:xx format (for example: 08:00:20:12:34:56) • xxxxxxxxxxxx format (for example: 080020123456). Command mode: All except User EXEC show mac-address-table port {} Displays all FDB entries for a particular port. Command mode: All except User EXEC show mac-address-table vlan {} Displays all FDB entries on a single VLAN. Command mode: All except User EXEC show mac-address-table Displays all entries in the Forwarding Database. Command mode: All except User EXEC clear mac-address-table Clears the entire Forwarding Database from switch memory, then adds the static entries to the Forwarding Database. Command mode: All except User EXEC Maintenance Commands 147