HP 6125XLG Installation manual

HP 6125XLG Blade Switch
Network Management and Monitoring
Command Reference
Part number: 5998-3740
Software version: Release 2306
Document version: 6W100-20130912

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Contents
Ping, tracert, and system debugging commands······································································································· 5
debugging·································································································································································5
display debugging ···················································································································································6
ping············································································································································································6
ping ipv6···································································································································································9
tracert······································································································································································ 11
tracert ipv6····························································································································································· 13
NTP commands ··························································································································································15
display ntp-service ipv6 sessions ························································································································· 15
display ntp-service sessions ·································································································································· 19
display ntp-service status ······································································································································ 23
display ntp-service trace ······································································································································· 25
ntp-service acl ························································································································································ 26
ntp-service authentication enable ························································································································ 27
ntp-service authentication-keyid ··························································································································· 28
ntp-service broadcast-client ·································································································································· 29
ntp-service broadcast-server ································································································································· 30
ntp-service enable·················································································································································· 31
ntp-service inbound disable·································································································································· 31
ntp-service ipv6 acl ··············································································································································· 32
ntp-service ipv6 inbound disable························································································································· 33
ntp-service ipv6 multicast-client ···························································································································· 33
ntp-service ipv6 multicast-server··························································································································· 34
ntp-service ipv6 source ········································································································································· 35
ntp-service ipv6 unicast-peer ································································································································ 36
ntp-service ipv6 unicast-server······························································································································ 37
ntp-service max-dynamic-sessions ························································································································ 39
ntp-service multicast-client····································································································································· 39
ntp-service multicast-server···································································································································· 40
ntp-service refclock-master···································································································································· 41
ntp-service reliable authentication-keyid ············································································································· 42
ntp-service source ·················································································································································· 43
ntp-service unicast-peer········································································································································· 44
ntp-service unicast-server ······································································································································ 45
SNTP commands ························································································································································47
display sntp ipv6 sessions ···································································································································· 47
display sntp sessions············································································································································· 47
sntp authentication enable ··································································································································· 48
sntp authentication-keyid ······································································································································ 49
sntp enable····························································································································································· 50
sntp ipv6 unicast-server········································································································································· 50
sntp reliable authentication-keyid ························································································································ 51
sntp unicast-server ················································································································································· 52
Information center commands ···································································································································54
display info-center ················································································································································· 54
display logbuffer···················································································································································· 54
display logbuffer summary ··································································································································· 56

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display logfile summary········································································································································ 57
display security-logfile summary ·························································································································· 58
enable log updown··············································································································································· 58
info-center enable·················································································································································· 59
info-center logbuffer ·············································································································································· 59
info-center logbuffer size ······································································································································ 60
info-center logfile enable ······································································································································ 61
info-center logfile frequency ································································································································· 61
info-center logfile overwrite-protection ················································································································ 62
info-center logfile size-quota································································································································· 63
info-center logfile switch-directory ······················································································································· 63
info-center logging suppress duplicates ·············································································································· 64
info-center loghost ················································································································································· 65
info-center loghost source ····································································································································· 66
info-center security-logfile alarm-threshold ·········································································································· 67
info-center security-logfile enable························································································································· 68
info-center security-logfile frequency ··················································································································· 68
info-center security-logfile size-quota··················································································································· 69
info-center security-logfile switch-directory·········································································································· 70
info-center source ·················································································································································· 70
info-center synchronous ········································································································································ 72
info-center timestamp ············································································································································ 73
info-center timestamp loghost······························································································································· 74
logfile save····························································································································································· 74
reset logbuffer························································································································································ 75
security-logfile save ··············································································································································· 75
terminal debugging··············································································································································· 76
terminal logging level ··········································································································································· 77
terminal monitor····················································································································································· 77
SNMP commands ······················································································································································79
display snmp-agent community···························································································································· 79
display snmp-agent group ···································································································································· 80
display snmp-agent local-engineid ······················································································································ 81
display snmp-agent mib-view ······························································································································· 82
display snmp-agent remote ·································································································································· 83
display snmp-agent statistics ································································································································ 84
display snmp-agent sys-info·································································································································· 86
display snmp-agent trap queue···························································································································· 87
display snmp-agent trap-list ·································································································································· 87
display snmp-agent usm-user································································································································ 88
enable snmp trap updown ··································································································································· 89
snmp-agent····························································································································································· 90
snmp-agent calculate-password ··························································································································· 91
snmp-agent community ········································································································································· 92
snmp-agent group·················································································································································· 94
snmp-agent local-engineid···································································································································· 96
snmp-agent log ······················································································································································ 97
snmp-agent mib-view············································································································································· 97
snmp-agent packet max-size ································································································································ 99
snmp-agent remote ················································································································································ 99
snmp-agent source···············································································································································100
snmp-agent sys-info contact································································································································101
snmp-agent sys-info location·······························································································································102
snmp-agent sys-info version ································································································································102

iii
snmp-agent target-host ········································································································································103
snmp-agent trap enable ······································································································································105
snmp-agent trap if-mib link extended ················································································································108
snmp-agent trap life·············································································································································108
snmp-agent trap queue-size································································································································109
snmp-agent usm-user { v1 | v2c }······················································································································110
snmp-agent usm-user v3······································································································································111
NQA commands····················································································································································· 115
data-fill··································································································································································115
data-size ·······························································································································································115
description (any NQA operation type view)····································································································116
destination ip ·······················································································································································117
destination port····················································································································································117
display nqa history··············································································································································118
display nqa reaction counters····························································································································119
display nqa result ················································································································································120
display nqa statistics ···········································································································································121
frequency······························································································································································123
history-record enable ··········································································································································124
history-record keep-time······································································································································125
history-record number ·········································································································································125
next-hop································································································································································126
nqa········································································································································································127
nqa agent enable ················································································································································127
nqa schedule························································································································································128
probe count··························································································································································129
probe timeout·······················································································································································130
reaction checked-element probe-duration·········································································································130
reaction checked-element probe-fail··················································································································132
reaction checked-element probe-fail (for trigger) ·····························································································133
route-option bypass-route····································································································································134
source interface ···················································································································································134
source ip·······························································································································································135
source port ···························································································································································136
statistics hold-time················································································································································137
statistics interval···················································································································································137
statistics max-group ·············································································································································138
tos··········································································································································································138
ttl············································································································································································139
type ·······································································································································································140
vpn-instance (ICMP echo operation view) ········································································································140
sFlow commands····················································································································································· 142
display sflow ························································································································································142
sflow agent···························································································································································143
sflow collector ······················································································································································144
sflow counter interval ··········································································································································145
sflow counter collector ········································································································································145
sflow flow collector··············································································································································146
sflow flow max-header········································································································································146
sflow sampling-mode ··········································································································································147
sflow sampling-rate ·············································································································································148
sflow source ·························································································································································148

iv
Process monitoring and maintenance commands ································································································ 150
display kernel deadloop·····································································································································150
display kernel deadloop configuration ·············································································································153
display kernel exception·····································································································································154
display kernel reboot ··········································································································································157
display kernel starvation·····································································································································159
display kernel starvation configuration ·············································································································162
display process····················································································································································163
display process cpu ············································································································································166
display process log ·············································································································································167
display process memory ·····································································································································168
display process memory heap ···························································································································169
display process memory heap address ············································································································171
display process memory heap size ···················································································································172
monitor kernel deadloop enable ·······················································································································173
monitor kernel deadloop exclude-thread ··········································································································174
monitor kernel deadloop time ····························································································································174
monitor kernel starvation enable ·······················································································································175
monitor kernel starvation exclude-thread ··········································································································176
monitor kernel starvation time····························································································································177
monitor process ···················································································································································178
monitor thread ·····················································································································································183
reset kernel deadloop ·········································································································································186
reset kernel exception ·········································································································································186
reset kernel reboot···············································································································································187
reset kernel starvation ·········································································································································187
Port mirroring commands ······································································································································· 189
display mirroring-group ······································································································································189
mirroring-group····················································································································································190
mirroring-group mirroring-port (interface view)································································································191
mirroring-group mirroring-port (system view) ···································································································192
mirroring-group monitor-egress··························································································································193
mirroring-group monitor-port (interface view)···································································································194
mirroring-group monitor-port (system view) ······································································································195
mirroring-group reflector-port ·····························································································································196
mirroring-group remote-probe vlan····················································································································197
Traffic mirroring commands ··································································································································· 199
mirror-to ································································································································································199
Support and other resources ·································································································································· 200
Contacting HP ······························································································································································200
Subscription service ············································································································································200
Related information······················································································································································200
Documents····························································································································································200
Websites·······························································································································································200
Conventions ··································································································································································201
Index ········································································································································································ 203

5
Ping, tracert, and system debugging
commands
debugging
Use debugging to enable debugging for a specific module.
Use undo debugging to disable debugging for a specific module.
Syntax
debugging { all [ timeout time ] | module-name [ option ] }
undo debugging { all | module-name [ option ] }
Default
Debugging functions are disabled for all modules.
Views
User view
Predefined user roles
network-admin
Parameters
all: Enables all debugging functions.
timeout time: Specifies the timeout time for the debugging all command. When all debugging is enabled,
the system automatically executes the undo debugging all command after the timeout time.The time
argument is in the range of 1 to 1440 minutes.
module-name: Module name, such as arp or device. To display the current module name, use the
debugging ? command.
option: The debugging option for a specific module. The option number and content differ for different
modules. To display the supported options, use the debugging module-name ?command.
Usage guidelines
Output of debugging commands is memory intensive. To guarantee system performance, enable
debugging only for modules that are in an exceptional condition.
Examples
# Enable debugging for the device management module.
<Sysname> debugging dev
Related commands
display debugging

6
display debugging
Use display debugging to display the enabled debugging functions.
Syntax
display debugging [module-name ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
module-name: Displays the debugging settings of the specified module. To display the current module
name, use the display debugging ? command.
Examples
# Display all enabled debugging functions.
<Sysname> display debugging
DEV debugging switch is on
Related commands
debugging
ping
Use ping to verify whether the destination IP address is reachable, and display related statistics.
Syntax
ping [ ip ] [ -a source-ip | -c count | -f | -h ttl | -i interface-type interface-number | -m interval | -n | -p
pad | -q | -r | -s packet-size | -t timeout | -tos tos | -v | -vpn-instance vpn-instance-name ] * host
Views
Any view
Predefined user roles
network-admin
Parameters
ip: Distinguishes between a destination host name and the ping command keyword. For example, you
must use the command in the form of ping ip ip instead of ping ip if the destination host name is ip.
-a source-ip: Specifies the source IP address of an ICMP echo request. It must be an IP address configured
on the device. If this option is not specified, the source IP address of an ICMP echo request is the primary
IP address of the outbound interface of the request.
-c count: Specifies the number of times that an ICMP echo request is sent. The count argument is in the
range of 1 to 4294967295. The default value is 5.
-f: Discards packets larger than the MTU of an outbound interface, which means the ICMP echo request
is not allowed to be fragmented.

7
-h ttl: Specifies the TTL value for an ICMP echo request. The ttl argument is in the range of 1 to 255. The
default value is 255.
-i interface-type interface-number: Specifies the ICMP echo request sending interface by its type and
number. If this option is not provided, the ICMP echo request sending interface is determined by
searching the routing table or forwarding table according to the destination IP address.
-m interval: Specifies the interval (in milliseconds) to send an ICMP echo request. The interval argument
is in the range of 1 to 65535. The default value is 200.
-n: Disables domain name resolution for the host argument. If the host argument represents the host name
for the destination, and this keyword is not specified, the device translates host into an address.
-p pad: Specifies the value of the pad field in an ICMP echo request, in hexadecimal format, 1 to 8
bits.The pad argument is in the range of 0 to ffffffff. If the specified value is less than 8 bits, 0s are added
in front of the value to extend it to 8 bits. For example, if pad is configured as 0x2f, then the packets are
padded with 0x0000002f to make the total length of the packet meet the requirements of the device. By
default, the padded value starts from 0x01 up to 0xff, where another round starts again if necessary, like
0x010203…feff01….
-q: Displays only statistics. If this keyword is not specified, the system displays all information.
-r: Records routing information. If this keyword is not specified, routes are not recorded.
-s packet-size: Specifies length (in bytes) of an ICMP echo request (not including the IP packet header
and the ICMP packet header). The packet-size argument is in the range of 20 to 8100. The default value
is 56.
-t timeout: Specifies the timeout time (in milliseconds) of an ICMP echo reply. If the source does not
receive an ICMP echo reply within the timeout, it considers the ICMP echo reply timed out. The timeout
argument is in the range of 0 to 65535. The default value is 2000.
-tos tos: Specifies the ToS value of an ICMP echo request. The tos argument is in the range of 0 to 255.
The default value is 0.
-v: Displays non ICMP echo reply received. If this keyword is not specified, the system does not display
non ICMP echo reply.
-vpn-instance vpn-instance-name: Specifies the MPLS L3VPN to which the destination belongs, where the
vpn-instance-name argument is a case-sensitive string of 1 to 31 characters. If the destination is on the
public network, do not specify this option.
host: IP address or host name (a string of 1 to 253 characters) for the destination.
Usage guidelines
To use the name of the destination host to perform the ping operation, you must first configure the DNS
on the device. Otherwise, the ping operation will fail.
To abort the ping operation during the execution of the command, press Ctrl+C.
Examples
# Test whether the device with an IP address of 1.1.2.2 is reachable.
<Sysname> ping 1.1.2.2
PING 1.1.2.2 (1.1.2.2): 56 data bytes, press CTRL_C to break
56 bytes from 1.1.2.2: icmp_seq=0 ttl=254 time=2.137 ms
56 bytes from 1.1.2.2: icmp_seq=1 ttl=254 time=2.051 ms
56 bytes from 1.1.2.2: icmp_seq=2 ttl=254 time=1.996 ms
56 bytes from 1.1.2.2: icmp_seq=3 ttl=254 time=1.963 ms

8
56 bytes from 1.1.2.2: icmp_seq=4 ttl=254 time=1.991 ms
--- 1.1.2.2 ping statistics ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 1.963/2.028/2.137/0.062 ms
# Test whether the device with an IP address of 1.1.2.2 in VPN 1 is reachable.
<Sysname> ping -vpn-instance vpn1 1.1.2.2
PING 1.1.2.2 (1.1.2.2): 56 data bytes, press CTRL_C to break
56 bytes from 1.1.2.2: icmp_seq=0 ttl=254 time=2.137 ms
56 bytes from 1.1.2.2: icmp_seq=1 ttl=254 time=2.051 ms
56 bytes from 1.1.2.2: icmp_seq=2 ttl=254 time=1.996 ms
56 bytes from 1.1.2.2: icmp_seq=3 ttl=254 time=1.963 ms
56 bytes from 1.1.2.2: icmp_seq=4 ttl=254 time=1.991 ms
--- 1.1.2.2 ping statistics ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 1.963/2.028/2.137/0.062 ms
# Test whether the device with an IP address of 1.1.2.2 is reachable. Only results are displayed.
<Sysname> ping -q 1.1.2.2
PING 1.1.2.2 (1.1.2.2): 56 data bytes, press CTRL_C to break
--- 1.1.2.2 ping statistics ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 1.962/2.196/2.665/0.244 ms
# Test whether the device with an IP address of 1.1.2.2 is reachable. The route information is displayed.
<Sysname> ping -r 1.1.2.2
PING 1.1.2.2 (1.1.2.2): 56 data bytes, press CTRL_C to break
56 bytes from 1.1.2.2: icmp_seq=0 ttl=254 time=4.685 ms
RR: 1.1.2.1
1.1.2.2
1.1.1.2
1.1.1.1
56 bytes from 1.1.2.2: icmp_seq=1 ttl=254 time=4.834 ms (same route)
56 bytes from 1.1.2.2: icmp_seq=2 ttl=254 time=4.770 ms (same route)
56 bytes from 1.1.2.2: icmp_seq=3 ttl=254 time=4.812 ms (same route)
56 bytes from 1.1.2.2: icmp_seq=4 ttl=254 time=4.704 ms (same route)
--- 1.1.2.2 ping statistics ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 4.685/4.761/4.834/0.058 ms
The output shows that:
•The destination is reachable.
•T h e ro u t e i s 1.1.1.1 < - > { 1.1.1. 2; 1.1. 2.1 } < - > 1.1. 2. 2.

9
Table 1 Command output
Field Descri
p
tion
PING 1.1.2.2 (1.1.2.2): 56 data
bytes, press CTRL_C to break
Test whether the device with IP address 1.1.2.2 is reachable. There are
56 data bytes in each ICMP echo request. Press Ctrl+C to abort the ping
operation.
56 bytes from 1.1.2.2: icmp_seq=0
ttl=254 time=4.685 ms
Received ICMP echo replies from the device whose IP address is
1.1.2.2. If no echo reply is received during the timeout period, no
information is displayed.
•bytes—Number of data bytes in the ICMP reply.
•icmp_seq—Packet sequence, used to determine whether a segment is
lost, disordered or repeated.
•ttl—TTL value in the ICMP reply.
•time—Response time.
RR:
Routers through which the ICMP echo request passed. They are
displayed in inversed order, which means the router with a smaller
distance to the destination is displayed first.
--- 1.1.2.2 ping statistics --- Statistics on data received and sent in the ping operation.
5 packet(s) transmitted Number of ICMP echo requests sent.
5 packet(s) received Number of ICMP echo replies received.
0.0% packet loss Percentage of packets not responded to the total packets sent.
round-trip min/avg/max/std-dev =
4.685/4.761/4.834/0.058 ms
Minimum/average/maximum/standard deviation response time, in
milliseconds.
ping ipv6
Use ping ipv6 to verify whether an IPv6 address is reachable, and display related statistics.
Syntax
ping ipv6 [ -a source-ipv6 | -c count | -m interval |-q | -s packet-size | -t timeout |-v | -vpn-instance
vpn-instance-name ] * host [ -i interface-type interface-number ]
Views
Any view
Predefined user roles
network-admin
Parameters
-a source-ipv6: Specifies the source IPv6 address of an ICMP echo request. It must be a valid IPv6
address configured on the device. If this option is not specified, the source IPv6 address of an ICMP echo
request is the IPv6 address of the outbound interface of the request. (The address selection rule is defined
by RFC 3484.)
-c count: Specifies the number of times that an ICMPv6 echo request is sent. The count argument is in the
range of 1 to 4294967295. The default value is 5.
-m interval: Specifies the interval (in milliseconds) to send an ICMPv6 echo reply. The interval argument
is in the range of 1 to 65535. The default value is 1000.

10
-q: Displays only statistics. If this keyword is not specified, all information including the statistics is
displayed.
-s packet-size: Specifies length (in bytes) of an ICMPv6 echo request (not including the IPv6 packet
header and the ICMPv6 packet header). The packet-size argument is in the range of 20 to 8100. The
default value is 56.
-t timeout: Specifies the timeout time (in milliseconds) of an ICMPv6 echo reply. The timeout argument is
in the range of 0 to 65535. The default value is 2000.
-v: Displays detailed information (including the dst field and the idx field) about ICMPv6 echo replies. If
this keyword is not specified, the system only displays brief information (not including the dst field and the
idx field) about ICMPv6 echo replies.
-vpn-instance vpn-instance-name: Specifies the VPN to which the destination belongs, where the
vpn-instance-name argument is a case-sensitive string of 1 to 31 characters. If the destination is on the
public network, do not specify this option.
-i interface-type interface-number: Specifies an outbound interface by its type and number. This option
must be specified when the destination address is a multicast address or a link local address. If this
option is not specified, the ICMP echo request sending interface is determined by searching the routing
table or forwarding table according to the destination IP address.
host: IPv6 address or host name (a string of 1 to 253 characters) for the destination.
Usage guidelines
To use the name of the destination host to perform the ipv6 ping operation, you must first configure DNS
on the device. Otherwise, the ipv6 ping operation fails.
To abort the ping ipv6 operation during the execution of the command, press Ctrl+C.
Examples
# Test whether the IPv6 address (2001::2) is reachable.
<Sysname> ping ipv6 2001::2
PING6(104=40+8+56 bytes) 2001::1 --> 2001::2, press CTRL_C to break
56 bytes from 2001::2, icmp_seq=0 hlim=64 time=62.000 ms
56 bytes from 2001::2, icmp_seq=1 hlim=64 time=23.000 ms
56 bytes from 2001::2, icmp_seq=2 hlim=64 time=20.000 ms
56 bytes from 2001::2, icmp_seq=3 hlim=64 time=4.000 ms
56 bytes from 2001::2, icmp_seq=4 hlim=64 time=16.000 ms
--- 2001::2 ping6 statistics ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 4.000/25.000/62.000/20.000 ms
# Test whether the IPv6 address (2001::2) is reachable. Only the statistics is displayed.
<Sysname> ping ipv6 –q 2001::2
PING6(104=40+8+56 bytes) 2001::1 --> 2001::2, press CTRL_C to break
--- 2001::2 ping6 statistics ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 4.000/25.000/62.000/20.000 ms
# Test whether the IPv6 address (2001::2) is reachable. Detailed ping information is displayed.
<Sysname> ping ipv6 –v 2001::2

11
PING6(104=40+8+56 bytes) 2001::1 --> 2001::2, press CTRL_C to break
56 bytes from 2001::2, icmp_seq=0 hlim=64 dst=2001::1 idx=3 time=62.000 ms
56 bytes from 2001::2, icmp_seq=1 hlim=64 dst=2001::1 idx=3 time=23.000 ms
56 bytes from 2001::2, icmp_seq=2 hlim=64 dst=2001::1 idx=3 time=20.000 ms
56 bytes from 2001::2, icmp_seq=3 hlim=64 dst=2001::1 idx=3 time=4.000 ms
56 bytes from 2001::2, icmp_seq=4 hlim=64 dst=2001::1 idx=3 time=16.000 ms
--- 2001::2 ping6 statistics ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 4.000/25.000/62.000/20.000 ms
The output shows that:
•The destination is reachable, and ICMPv6 echo requests are replied.
•The minimum/average/maximum/standard deviation roundtrip time of packets is 4 milliseconds,
25 milliseconds, 62 milliseconds and 20 milliseconds.
Table 2 Command output
Field Descri
p
tion
PING6(104=40+8+56 bytes)
2001::1 --> 2001::2, press CTRL_C to
break
A 104-byte ICMPv6 echo reply is sent from 2001::1to 2001::2.
•The length of IPv6 packet header is 40 bytes.
•The length of ICMPv6 packet header is 8 bytes.
•The length of the ICMPv6 echo request is 56 bytes.
Press Ctrl+C to abort the ping IPv6 operation.
56 bytes from 2001::2,
icmp_seq=1 hlim=64 dst=2001::1
idx=3 time=62.000 ms
Received ICMPv6 echo replies from the device whose IPv6 address is
2001::2.
•The number of data bytes is 56.
•The packet sequence is 1.
•The hop limit value is 64.
•The destination address is 2001::1. Specify the -v keyword to
display this field.
•The index for the packet inbound interface is 3. Specify the -v
keyword to display this field.
•The response time is 62 milliseconds.
--- 2001::2 ping6 statistics --- Statistics on data received and sent in the ping operation.
5 packet(s) transmitted Number of ICMPv6 echo requests sent.
5 packet(s) received Number of ICMPv6 echo replies received.
0.0% packet loss Percentage of packets not responded to the total packets sent.
round-trip min/avg/max/ std-dev
=4.000/25.000/62.000/20.000
ms
Minimum/average/maximum/standard deviation response time, in
milliseconds.
tracert
Use tracert to trace the path the packets traverse from source to destination.

12
Syntax
tracert [ -a source-ip | -f first-ttl |-m max-ttl | -p port | -q packet-number | -vpn-instance
vpn-instance-name |-w timeout ] * host
Views
Any view
Predefined user roles
network-admin
Parameters
-a source-ip: Specifies the source IP address of a tracert packet. It must be a valid IP address configured
on the device. If this option is not specified, the source IP address of a tracert packet is the primary IP
address of the outbound interface of this tracert packet.
-f first-ttl: Specifies the first TTL (the maximum number of hops allowed for the first packet). The first-ttl
argument is in the range of 1 to 255. The default value is 1. It must be smaller than the value of the max-ttl
argument.
-m max-ttl: Specifies the maximum TTL (the maximum number of hops allowed for a packet). The max-ttl
argument is in the range of 1 to 255. The default value is 30. It must be greater than the value of the
first-ttl argument.
-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 the
vpn-instance-name argument 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: IP address or host name (a string of 1 to 253 characters) for the destination.
Usage guidelines
After having identified network failure with the ping command, use the tracert command to locate failed
nodes.
The output of 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 (probably because the destination is unreachable or sending ICMP
timeout/destination unreachable packets is disabled).
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 (1.1.2.2).
<Sysname> tracert 1.1.2.2
traceroute to 1.1.2.2(1.1.2.2), 30 hops at most, 40 bytes each packet, press CTRL_C to
break
1 1.1.1.2 673 ms 425 ms 30 ms
2 1.1.2.2 580 ms 470 ms 80 ms

13
# Trace the path to destination (192.168.0.46) over an MPLS network.
<Sysname> tracert 192.168.0.46
traceroute to 192.168.0.46(192.168.0.46), 30 hops at most, 40 bytes each packet, press
CTRL_C to break
1 192.0.2.13 (192.0.2.13) 0.661 ms 0.618 ms 0.579 ms
2 192.0.2.9 (192.0.2.9) 0.861 ms 0.718 ms 0.679 ms
MPLS Label=100048 Exp=0 TTL=1 S=1
3 192.0.2.5 (192.0.2.5) 0.822 ms 0.731 ms 0.708 ms
MPLS Label=100016 Exp=0 TTL=1 S=1
4 192.0.2.1 (192.0.2.1) 0.961 ms 8.676 ms 0.875 ms
Table 3 Command output
Field Descri
p
tion
traceroute to 1.1.2.2(1.1.2.2) Display the route that the IP packets traverse from the current device to the
device whose IP address is 1.1.2.2.
hops at most Maximum number of hops of the probe packets, which can be set by the -m
keyword.
bytes each packet Number of bytes of a probe packet.
press CTRL_C to break During the execution of the command, press Ctrl+C to abort the tracert
operation.
1 1.1.1.2 673 ms 425 ms 30
ms
Probe result of the probe packets whose TTL is 1, including the IP address of
the first hop, and the roundtrip time of three probe packets.
The number of packets that can be sent in each probe can be set through the
-q keyword.
MPLS Label=100048 Exp=0
TTL=1 S=1
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.
tracert ipv6
Use tracert ipv6 to display the path that 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

14
Parameters
-f first-hop: Specifies the first hoplimit (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 value
of the max-hops argument.
-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 the value of the first-hop
argument.
-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 the
vpn-instance-name argument 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 (in milliseconds) of the reply packet of a probe packet. The timeout
argument is in the range of 1 to 65535. The default value is 5000 milliseconds.
host: IPv6 address or host name (a string of 1 to 253 characters) for the destination.
Usage guidelines
After having identified network failure with the ping ipv6 command, you can use the tracert ipv6
command to locate failed nodes.
The output of 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 (probably because the destination is unreachable or sending ICMP
timeout/destination unreachable packets is disabled).
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 0.861 ms 0.718 ms 0.679 ms
3 2001:3::2 0.822 ms 0.731 ms 0.708 ms
Table 4 Command output
Field Descri
p
tion
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.
1 2001:1::2 0.661 ms 0.618
ms 0.579 ms
Probe result of the probe packets whose hoplimit is 1, including the IPv6
address of the first hop, and the roundtrip time of three probe packets. The
number of packets that can be sent in each probe can be set by the -q
keyword.

15
NTP commands
display ntp-service ipv6 sessions
Use display ntp-service ipv6 sessions to display information about all IPv6 NTP associations.
Syntax
display ntp-service ipv6 sessions [ verbose ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
verbose: Displays detailed information about all IPv6 NTP associations. If you do not specify this
keyword, the command displays only brief information about the IPv6 NTP associations.
Examples
# Display brief information about all IPv6 NTP associations.
<Sysname> display ntp-service ipv6 sessions
Notes: 1 source(master), 2 source(peer), 3 selected, 4 candidate, 5 configured.
Source: [125]3000::32
Reference: 127.127.1.0 Clock stratum: 2
Reachabilities: 1 Poll interval: 64
Last receive time: 6 Offset: -0.0
Roundtrip delay: 0.0 Dispersion: 0.0
Total sessions : 1
Table 5 Command output
Field Descri
p
tion
[12345]
•1—Clock source selected by the system (the current reference source). It has
a system clock stratum level less than or equal to 15.
•2—The stratum level of the clock source is less than or equal to 15.
•3—The clock source has survived the clock selection algorithm.
•4—The clock source is a candidate clock source.
•5—The clock source was created by a command.
Source IPv6 address of the NTP server.

16
Field Descri
p
tion
Reference
Reference clock ID of the NTP server:
•If the reference clock is the local clock, the value of this field is related to the
value of the Clock stratum field:
{When the value of the Clock stratum field is 0 or 1, this field displays
Local.
{When the Clock stratum field has another value, this field displays the
MD5 digest value of the first 32 bits of the IPv6 address. The MD5 digest
value is in dotted decimal format.
•If the reference clock is the clock of another device on the network, this field
displays the MD5 digest value of the first 32 bits of the IPv6 address. The
MD5 digest value is in dotted decimal format.
Clock stratum
Stratum level of the NTP server, which determines the clock accuracy. The
value is in the range of 1 to 16. A lower stratum level represents higher clock
accuracy. A stratum 16 clock is not synchronized and cannot be used as a
reference clock.
Reachabilities Reachability count of the NTP server. 0 indicates that the NTP server is
unreachable.
Poll interval Polling interval in seconds. It is the maximum interval between successive NTP
messages.
Last receive time
Length of time from when the last NTP message was received or when the local
clock was last updated to the current time.
Time is in seconds by default. If the time length is greater than 2048 seconds,
it is displayed in minutes; if greater than 300 minutes, in hours; if greater than
96 hours, in days.
Offset Offset of the system clock relative to the reference clock, in milliseconds.
Roundtrip delay Roundtrip delay from the local device to the clock source, in milliseconds.
Dispersion Maximum error of the system clock relative to the reference source.
Total sessions Total number of associations.
# Display detailed information about all IPv6 NTP associations.
<Sysname> display ntp-service ipv6 sessions verbose
Clock source: 1::1
Session ID: 36144
Clock stratum: 16
Clock status: configured, insane, valid, unsynced
Reference clock ID: INIT
VPN instance: Not specified
Local mode: sym_active, local poll interval: 6
Peer mode: unspec, peer poll interval: 10
Offset: 0.0000ms, roundtrip delay: 0.0000ms, dispersion: 15937ms
Root roundtrip delay: 0.0000ms, root dispersion: 0.0000ms
Reachabilities:0, sync distance: 15.938
Precision: 2^10, version: 4, source interface: Not specified
Reftime: 00000000.00000000 Thu, Feb 7 2036 6:28:16.000
Orgtime: d17cbb21.0f318106 Tue, May 17 2011 9:15:13.059

17
Rcvtime: 00000000.00000000 Thu, Feb 7 2036 6:28:16.000
Xmttime: 00000000.00000000 Thu, Feb 7 2036 6:28:16.000
Roundtrip delay samples: 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Offset samples: 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Filter order: 0 1 2 3 4 5 6 7
Total sessions: 1
Table 6 Command output
Field Descri
p
tion
Clock source IPv6 address of the clock source.
Clock stratum
Stratum level of the NTP server, which determines the clock
precision. The value is in the range of 1 to 16. A lower stratum level
represents higher clock accuracy. A stratum 16 clock is not
synchronized and cannot be used as a reference clock.
Clock status
Status of the clock source corresponding to this association:
•configured—The association was created by a configuration
command.
•dynamic—The association is established dynamically.
•master—The clock source is the primary reference source of the
current system.
•selected—The clock source has survived the clock selection
algorithm.
•candidate—The clock source is the candidate reference source.
•sane—The clock source is available for this association.
•insane—The clock source is not available for this association.
•valid—The clock source is valid, which means the clock source
meets the following requirements: it has passed the
authentication and is being synchronized. Its stratum level is
valid, and its root delay and root dispersion values are within
their ranges.
•invalid—The clock source is invalid.
•unsynced—The clock source has not been synchronized or the
value of the stratum level is invalid.
Reference clock ID
•If the reference clock is the local clock, the value of this field is
related to the value of the Clock stratum field:
{When the value of the Clock stratum field is 0 or 1, this field
displays Local.
{When the Clock stratum field has another value, this field
displays the MD5 digest value of the first 32 bits of the IPv6
address. The MD5 digest value is in dotted decimal format.
•If the reference clock is the clock of another device on the
network, this field displays the MD5 digest value of the first 32
bits of the IPv6 address. The MD5 digest value is in dotted
decimal format.
VPN instance VPN instance of the NTP server. If the NTP server is in a public
network, the field is displayed as Not specified.

18
Field Descri
p
tion
Local mode
Operation mode of the local device:
•unspec—The mode is unspecified.
•sym_active—Active mode.
•sym_passive—Passive mode.
•client—Client mode.
•server—Server mode.
•broadcast—Broadcast or multicast server mode.
•bclient—Broadcast or multicast client mode.
local poll interval
Polling interval for the local device, in seconds. The value displayed
is a power of 2. For example, if the displayed value is 6, the poll
interval of the local device is 26, or 64 seconds.
peer mode
Operation mode of the peer device:
•unspec—The mode is unspecified.
•sym_active—Active mode.
•sym_passive—Passive mode.
•client—Client mode.
•server—Server mode.
•broadcast—Broadcast or multicast server mode.
•bclient—Broadcast or multicast client mode.
peer poll interval
Polling interval for the peer device, in seconds. The value displayed
is a power of 2. For example, if the displayed value is 6, the polling
interval of the local device is 26, or 64 seconds.
Offset Offset of the system clock relative to the reference clock, in
milliseconds.
roundtrip delay Roundtrip delay from the local device to the clock source, in
milliseconds.
dispersion Maximum error of the system clock relative to the reference clock.
Root roundtrip delay Roundtrip delay from the local device to the primary reference
source, in milliseconds.
root dispersion Maximum error of the system clock relative to the primary reference
clock, in milliseconds.
Reachabilities Reachability count of the clock source. 0 indicates that the clock
source is unreachable.
sync distance
Synchronization distance relative to the upper-level clock, in
seconds, and calculated from dispersion and roundtrip delay
values.
Precision Accuracy of the system clock.
version NTP version in the range of 1 to 4.
source interface Source interface.
If the source interface is not specified, this field is Not specified.
Reftime Reference timestamp in the NTP message.
Orgtime Originate timestamp in the NTP message.
Rcvtime Receive timestamp in the NTP message.