Tracert Ipv6 - H3C S5830V2 Series Command Reference Manual

Field
MPLS Label=100048 Exp=0
TTL=1 S=1

tracert ipv6

Use the tracert ipv6 command to display the path the IPv6 packets traverse from source to destination.
Syntax
tracert ipv6 [ -f first-hop | -m max-hops | -p port | -q packet-number | -vpn-instance vpn-instance-name
| -w timeout ] * host
Views
Any view
Predefined user roles
network-admin
Parameters
-f first-hop: Specifies the first hoplimit, or, the allowed number of hops for the first packet. The first-hop
argument is in the range of 1 to 255. The default value is 1. The first hoplimit must be less than the
max-hops.
-m max-hops: Specifies the maximum number of hops allowed for a packet. The max-hops argument is
in the range of 1 to 255 . The default value is 30. It must be greater than first-hop.
-p port: Specifies the UDP port number of the destination. The port argument is in the range of 1 to 65535.
The default value is 33434. It is unnecessary to modify this option.
-q packet-number: Specifies the number of probe packets sent each time. The packet-number argument
is in the range of 1 to 65535. The default value is 3.
-vpn-instance vpn-instance-name: Specifies the MPLS L3VPN to which the destination belongs, where
vpn-instance-name is a case-sensitive string of 1 to 31 characters. If the destination is on the public
network, do not specify this option.
-w timeout: Specifies the timeout time of the reply packet of a probe packet. The timeout argument is in
the range of 1 to 65535 milliseconds. The default value is 5000 milliseconds.
host: IPv6 address or host name for the destination, which is a string of 1 to 46 characters.
Usage guidelines
After having identified network failure with the ping ipv6 command, you can use the tracert ipv6
command to locate the failed nodes.
The output of the tracert ipv6 command includes IPv6 addresses of all the Layer 3 devices the packets
traverse from source to destination. Asterisks (* * *) are displayed if the device cannot reply with an
Description
ICMP timeout packets on an MPLS network, carrying MPLS label information:
•
Label—Label value that is used to identify a forwarding equivalence class
(FEC).
•
Exp—Reserved, usually used for class of service (CoS).
•
TTL—TTL value.
•
S—MPLS supports multiple levels of labels. Value 1 indicates that the label
is at the bottom of the label stack, and value 0 indicates that the label is in
another label stack.
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