H3C SOHO IE4300, Справочник по командам

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Parameters
-a source-ip
: Specifies an IP address of the device as the source IP address of probe packets. If
this option is not specified, the source IP address of probe packets is the primary IP address of the
outbound interface.
-f first-ttl
: Specifies the TTL of the first packet sent to the destination. The value range is 1 to
255, and the default is 1. It must be no greater than the value of the
max-ttl
argument.
-m max-ttl
: Specifies the maximum number of hops allowed for a probe packet. The value range
is 1 to 255, and the default is 30. It must be no smaller than the value of the first-ttl argument.
-p port
: Specifies an invalid UDP port of the destination. The value range is 1 to 65535, and the
default is 33434.
-q packet-number
: Specifies the number of probe packets to send per hop. The value range is 1
to 65535, and the default is 3.
-t tos
: Specifies the ToS value of probe packets. The value range is 0 to 255, and the default is 0.
-vpn-instance vpn-instance-name
: Specifies an MPLS L3VPN instance to which the
destination belongs. The
vpn-instance-name
argument represents the VPN instance name, a
case-sensitive string of 1 to 31 characters. If the destination is on the public network, do not specify
this option.
-resolve-as
: Specifies a routing table for autonomous system (AS) resolution. Tracert searches
the specified routing table for the AS that each hop along the path belongs to. If you do not specify
this keyword, the global routing table is used. If the AS information is found, this command displays
the AS number next to the address of the hop in the probe result.
•
global
: Specifies the global routing table.
•
none : Disables AS resolution.
•
vpn : Specifies the VPN routing table.
-w timeout
: Specifies the timeout time in milliseconds of the reply packet for a probe packet. The
value range is 1 to 65535, and the default is 5000.
host
: Specifies the IP address or host name of the destination. The host name is a case-insensitive
string of 1 to 253 characters. It can contain letters, digits, and special characters such as hyphen (-),
underscore (_), and dot (.).
Usage guidelines
After identifying network failure with the ping command, use the tracert command to locate
failed nodes.
If the destination address is on the public network, you do not need to specify the
-resolve-as
keyword to obtain the AS information. The device automatically uses the global routing table for AS
resolution.
If the destination address is on a private network, address information of intermediate hops might be
stored in either the global routing table or the VPN routing table. To learn the AS path that the
packets traverse, execute the
tracert
command twice, once with the
-resolve-as global
keywords and again with the
-resolve-as vpn
keywords.
The output from the
tracert
command includes IP addresses of all the Layer 3 devices that the
packets traverse from source to destination. Asterisks (* * *) are displayed if the device cannot reply
with an ICMP error message. The reason might be the destination is unreachable or sending ICMP
timeout/destination unreachable packets is disabled.
Before starting a tracert operation, you must enable sending of ICMP destination unreachable
messages on the intermediate devices between the source and destination. The tracert operation
stops if any one of the following ICMP destination unreachable messages is received:
•
!N —Network unreachable.