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Command Manual – Getting Started
H3C VG Series Voice Gateways

Chapter 1 Fundamental Configuration Commands

1-20

1.3.10 loopback

Syntax

loopback

undo loopback

View

Ethernet interface view

Parameter

None

Description

Use the

loopback

command to enable loopback on the interface.

Use the

loopback

command to disable loopback on the interface.

By default, loopback is disabled on the interface.

Only for testing some special functions can loopback be set on the interface.

Example

# Enable loopback on the interface.

[VG-Ethernet0]loopback

1.3.11 mtu

Syntax

mtu

size

undo

mtu

View

Ethernet interface view

Parameter

size

: MTU size on the interface, in bytes. It ranges 512~1500 for Ethernet_II frames

and ranges 512-1500 for Ethernet_SNAP frames.

Description

Use the

mtu

command to configure or modify the MTU size on the interface.

Use the

undo mtu

command to reset the MTU size to the default value.

By default, the MTU is 1500 for Ethernet_II frames and 1492 for Ethernet_SNAP

frames.

Содержание VG Series

Страница 1: ...1 6 1 2 6 display sysname 1 6 1 2 7 display system cpu 1 7 1 2 8 display system memory 1 7 1 2 9 display version 1 8 1 2 10 reboot 1 10 1 2 11 sysname 1 11 1 2 12 version 1 11 1 3 Ethernet Configurati...

Страница 2: ...on Use the display history command command you can view the latest 20 commands you have entered You can press composite keys Ctrl P and Ctrl N to view the previous history command and the next one res...

Страница 3: ...w Parameter None Description Use the quit command to return from the current view to the upper level view Example Return to the system view from Ethernet interface view VG Ethernet0 quit VG 1 1 3 retu...

Страница 4: ...days in the month timezone name Sets the time zone name and contains 1 to 32 characters add HH MM SS Adds the time zone difference minus HH MM SS Reduces the time zone difference Description Use the c...

Страница 5: ...splays information in pages Description Use the display base information command to display system statistics The statistical information includes software version current configuration information in...

Страница 6: ...ou can adjust it Related command clock Example Display current date and time of the system VG display clock Current Voice Gateway time 03 05 23 Mar 30 2005 1 2 4 display duration Syntax display durati...

Страница 7: ...nd reboot Example Display system rebooting schedule VG display reboot 10 06 17 May 7 2005 Reboot scheduled for 23 59 59 May 7 2005 by Console Reboot reason Update Comware program The above information...

Страница 8: ...display system memory Syntax display system memory all blksize size detail View Any view Parameter all Displays the occupancy of all memory blocks blksize size Displays the occupancy of memory blocks...

Страница 9: ...350 Total 385 Block Size 4096 Free 8 Used 31 Total 39 Slice memory summary Used Byte 1027456 Free 1476 Used 1587 Total 3063 Raw Slice Memory Usage Total Size 1662960 Num 64 RawSlice detailed informat...

Страница 10: ...rned to ROM by power on H3C VG 10 41 with 1 MPC 852 Processor Voice Gateway serial number is 00E0FC1213147654 32M bytes SDRAM 8192K bytes Flash Memory 0K bytes NVRAM Config Register points to FLASH Ha...

Страница 11: ...unction to powering off the VG But in remote maintenance mode you can use this command to restart the VG remotely instead of going to the place where the VG is located and restarting it Using the comm...

Страница 12: ...or modify the system name which is displayed in view prompt By default the system name is VG Related command display sysname Example Set the system name as h3c VG sysname h3c h3c 1 2 12 version Synta...

Страница 13: ...ient Use the undo debugging dhcp client command to disable debugging output By default all the debugging for the DHCP client is disabled Example Enable debugging for events of the DHCP client VG debug...

Страница 14: ...cessfully 1 3 2 debugging ethernet Syntax debugging ethernet undo debugging ethernet View Any view Parameter None Description Use the debugging ethernet command to enable debugging for events of the E...

Страница 15: ...specified interface at the physical layer Use the undo debugging physical command to disable debugging information switch for packets transmitted received on the specified interface at the physical l...

Страница 16: ...col status z The physical attributes for example interface cable z The IP address z The link layer protocol and its status and statistics z Input output message statistics Example Display status and o...

Страница 17: ...t interface view Parameter negotiation Negotiation mode full Full duplex mode half Half duplex mode Description Use the duplex command to set the operating mode of the 10 100Base TX Fast Ethernet FE i...

Страница 18: ...t Example Set 10 100Base TX FE interface run in full duplex mode VG Ethernet0 duplex full 1 3 7 hub enable Syntax hub enable undo hub enable View System view Parameter None Parameter Use the hub enabl...

Страница 19: ...interface type in shortened form as long as it is not in conflict with other interface types For example you can shorten the Ethernet 0 as e0 Table 1 1 Interface types that the VG supports Interface t...

Страница 20: ...255 255 0 0 then it can be concluded by combining the IP address and mask that the corresponding network address is 129 9 0 0 It usually suffices to configure one IP address for one Ethernet interface...

Страница 21: ...ce Only for testing some special functions can loopback be set on the interface Example Enable loopback on the interface VG Ethernet0 loopback 1 3 11 mtu Syntax mtu size undo mtu View Ethernet interfa...

Страница 22: ...nterface sends IP packets in Ethernet_SNAP frames Description Use the send frame type command to set the send frame format of the IP packets on the interface Use the undo send frame type command to re...

Страница 23: ...mode If you set the interface to run in negotiation mode the peer interface must be also in negotiation mode It is recommended to use the speed command to set both ends at the same speed mode if you a...

Страница 24: ...atic route is configured The IP address and mask of the default route both are 0 If the specified route is absent in the routing table the default route will be used in forwarding When configuring a d...

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