Dell PowerEdge VRTX User Manual

Page 91

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System Management Commands

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FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\CLI Folders\Dell Plasma-ARC

2+3\new_system_mifs_ARC2_latest\System_Management.fm

D E LL CO N F I D E N T IA L – P R E L I M I N A RY 4 / 3 / 14 - F O R PR O O F O N LY

count

packet_count

—The number of probes to be sent at each TTL level.

The default count is 3. (Range: 1–10)

timeout

time_out

—The number of seconds to wait for a response to a

probe packet. The default is 3 seconds. (Range: 1–60)

source

ip-address

—One of the interface addresses of the device to use as a

source address for the probes. The device selects the optimal source

address by default. (Range: Valid IP address)

tos

tos

—The Type-Of-Service byte in the IP Header of the packet. (Range:

0–255)

Default Usage

N/A

Command Mode

Privileged EXEC mode

User Guidelines

The traceroute command works by taking advantage of the error messages

generated by routers when a datagram exceeds its time-to-live (TTL) value.
The traceroute command starts by sending probe datagrams with a TTL

value of one. This causes the first router to discard the probe datagram and

send back an error message. The traceroute command sends several probes at

each TTL level and displays the round-trip time for each.
The traceroute command sends out one probe at a time. Each outgoing

packet can result in one or two error messages. A "time exceeded” error

message indicates that an intermediate router has seen and discarded the

probe. A "destination unreachable" error message indicates that the

destination node has received the probe and discarded it because it could not

deliver the packet. If the timer goes off before a response comes in, the

traceroute command prints an asterisk (*).
The traceroute command terminates when the destination responds, when

the maximum TTL is exceeded, or when the user interrupts the trace with

Esc.
The traceroute command is not relevant to IPv6 link local addresses.

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