Beginning in Cisco IOS Release 12.1(11b)E, EXEC-level Cisco IOS commands (such as show, clear, and debug commands) can be entered within any configuration mode (such as global configuration mode) by issuing the docommand followed by the desired EXEC command. This feature provides the convenience of entering EXEC-level commands without needing to exit the current configuration mode.
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Prerequisites for EXEC Commands in Configuration Mode
You must have your network up and running with Cisco IOS Release 12.1(11b)E or a later release installed.
The following example shows how to execute the EXEC-level showinterface command from within global configuration mode:
Router(config)# do show interfaces serial 3/0
Serial3/0 is up, line protocol is up
Hardware is M8T-RS232
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, loopback not set, keepalive set (10 sec)
Last input never, output 1d17h, output hang never
Last clearing of "show interface" counters never
Example do clear vpdn tunnel Command
The following example shows how to execute the EXEC-level clearvpdntunnel command from within VPDN configuration mode:
Router(config-vpdn)# do clear vpdn tunnel
No new or modified RFCs are supported, and support for existing RFCs has not been modified.
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Restrictions for EXEC Commands in Configuration Mode
You cannot use the do command to execute the configureterminal EXEC command because issuing the configureterminalcommand changes the mode to configuration mode.