H3C SOHO IE4300, Справочник по командам

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11
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 ipv6
command twice, once with the
-resolve-as
global
keywords and again with the
-resolve-as vpn
keywords.
The output from the
tracert ipv6
command includes IPv6 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 an IPv6 tracert operation, you must enable sending of ICMPv6 destination
unreachable messages on the intermediate devices between the source and destination. The IPv6
tracert operation stops if any one of the following ICMPv6 destination unreachable messages is
received:
•
!N —No route to destination.
•
!P —Communication with destination administratively prohibited by filtering policies.
•
!A —Address unreachable. The unreachable reason is unknown.
•
!S —Beyond scope of source address. This message is displayed if the probe packet has a
link-local source address and a non-link-local destination address. Such a packet cannot be
delivered to the destination without leaving the scope of the source address.
To abort the tracert operation during the execution of the command, press Ctrl+C .
Examples
# Display the path that the packets traverse from source to destination (2001:3::2).
<Sysname> tracert ipv6 2001:3::2
traceroute to 2001:3::2(2001:3::2), 30 hops at most, 60 byte packets, press CTRL_C to break
1 2001:1::2 0.661 ms 0.618 ms 0.579 ms
2 2001:2::2 [AS 100] 0.861 ms 0.718 ms 0.679 ms
3 2001:3::2 [AS 200] 0.822 ms 0.731 ms 0.708 ms
# Display the path that the packets traverse from source to destination (2001:3::2) in VPN instance
vpn1, as well as the AS information of the hops along the path.
<Sysname> tracert ipv6 –vpn-instance vpn1 –resolve-as vpn 2001:3::2
traceroute to 2001:3::2(2001:3::2), 30 hops at most, 60 byte packets , press CTRL_C to
break
1 2001:1::2 0.661 ms 0.618 ms 0.579 ms
2 2001:2::2 0.861 ms 0.718 ms 0.679 ms
3 2001:3::2 [AS 65535] 0.822 ms 0.731 ms 0.708 ms
Table 4 Command output
Field Description
traceroute to 2001:3::2
Display the route that the IPv6 packets traverse from the current device
to the device whose IP address is 2001:3:2.
hops at most
Maximum number of hops of the probe packets, which can be set by the
-m
keyword.
byte packets Number of bytes of a probe packet.