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Command:traceroute {<ip-addr> | host <hostname> }[hops <hops>] [timeout
<timeout> ]
Function:This command is used to test the gateways passed by packets on their way
from sending equipment to destination equipment, in order to check whether the network
can be reached and to locate the fault of network.
Parameters:<ip-addr>is the IP address of the destination host, in dotted-decimal format;
<hostname>is the host name of the remote host. <hops> is the max number of passed
gateways allowed by Traceroute. <timeout>is the timeout value of packets, in millisecond,
ranging from 100 to 10000.
Default:The max number of passed gateways is set by default as 16, while the timeout
value is 2000 milliseconds.
Command mode:Admin Mode.
Usage Guide: Traceroute is used to locate the failure of the network when the destination
is not reachable.
Relative Command:ip host

5.2.5 Show

show command is used to display information about the system , port and protocol
operation. This part introduces the show command that displays system information,
other show commands will be discussed in other chapters.
5.2.5.1 show arp
Command:show arp
Function: Display ARP Mapping table
Command mode: Admin Mode
Usage Guide: Contents of current ARP mapping can be showed with this command,
including IP addresses, hardware addresses, hardware types, and interface names, etc.
Example:
Switch#show arp
Total arp items is 2, the matched arp items is 2
Address
1.1.1.2
192.168.1.145
5.2.5.2 show clock
Command:show clock
Function: Display current system clock
Command mode: Admin Mode
Usage Guide: System clock can be showed through this command. For any inaccuracy,
users can make changes.
DCS-3950 series Ethernet switch manual
Hardware Addr
00-03-0F-43-65-73 Vlan1
00-03-0F-FE-38-8A Vlan1
Interface
Port
Ethernet0/0/23 Dynamic
Ethernet0/0/23 Dynamic
Flag
55

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