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Contents
Ping, tracert, and system debugging commands ····································· 1
NQA server commands ············································································································· 87
display nqa server ············································································································· 87
nqa server enable ·············································································································· 88
nqa server tcp-connect ······································································································· 89
nqa server udp-echo ·········································································································· 90
module-name: Specifies a module by its name, such as arp or device. For a list of supported
modules, use the debugging ? command.
option: Specifies the debugging option for a module. Available options vary by module. To display the
debugging options supported by a module, use the debugging module-name ? command.
Usage guidelines
Output from debugging commands is memory intensive. To guarantee system performance, enable
debugging only for modules that are in an exceptional condition.
The system sends the debugging command output as debug messages to the device information
center. The information center then sends the messages to appropriate destinations based on the
log output configuration. For more information about configuring debug message output, see
Network Management and Monitoring Configuration Guide.
Examples
# Enable debugging for the device management module.
<Sysname> debugging dev
Related commands
display debugging
1
display debugging
Use display debugging to display the enabled debugging features for a module or for all modules.
Syntax
display debugging [ module-name ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
module-name: Specifies a module by its name. For a list of supported modules, use the display
debugging ? command. If you do not specify a module name, this command displays the enabled
debugging features for all modules.
Examples
# Display all enabled debugging features.
<Sysname> display debugging
DEV debugging switch is on
Related commands
debugging
ping
Use ping to test the reachability of the destination IP address and display ping statistics.
ip: Distinguishes between a destination host name and the ping command keywords if the name of
the destination host is i, ip, ipv, or ipv6. 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.
2
-asource-ip: Specifies an IP address of the device as the so urce IP address of ICMP echo requests.
If this option is not specified, the source IP address of ICMP echo requests is the primary IP address
of the outbound interface.
-ccount: Specifies the number of ICMP echo requests that are sent to the destination. The value
range is 1 to 4294967295, and the default is 5.
-f: Sets the "do-not-fragment" bit in the IP header.
-h ttl: Specifies the TTL value of ICMP echo requests. The value range is 1 to 255, and the default is
255.
-iinterface-type interface-number: Specifies the source interface for ICMP echo requests. If you do
not specify this option, the system uses the primary IP address of the matching route's egress
interface as the source interface for ICMP echo requests.
-minterval: Specifies the interval (in milliseconds) to send ICMP echo requests. The value range is 1
to 65535, and the default is 200.
-n: Disables domain name resolution for the host argument. If the host argument represents the host
name of the destination, and if this keyword is not specified, the device translates host into an
address.
-ppad: 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 requi rements of
the device. By default, the padded value starts from 0x01 up to 0xff, where another round starts
again if necessary, such as 0x010203…feff01….
-q: Displays only the summary statistics. If this keyword is not specified, the system displays all the
ping statistics.
-r: Records the addresses of the hops (up to 9) the ICMP echo requests passed. If this keyword is
not specified, the addresses of the hops that the ICMP echo requests passed are not recorded.
-s packet-size: Specifies the length (in bytes) of ICMP echo requests (excluding the IP packet
header and the ICMP packet header). The value range is 20 to 81 00, and the default is 56.
-t timeout: Specifies the timeout time (in millise conds) of an ICMP echo re ply. The value range is 0 to
65535, and the default is 2000. If the source does not receive an ICMP echo reply within the timeout,
it considers the ICMP echo reply timed out.
-tostos: Specifies the ToS value of ICMP echo requests. The value range is 0 to 255, and the default
is 0.
-v: Displays non-ICMP echo reply packets. If this keyword is not specified, the system does not
display non-ICMP echo reply packets.
-topologytopo-name: Specifies the topology to which the destination belongs, where topo-name is
a case-sensitive string of 1 to 31 characters. If the destination is on the public net
work, do not specify
this option.
3
-vpn-instance vpn-instance-name: Specifies the MPLS L3VPN instance 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: 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
T o ping a device identified by its host name, configu re the DNS settings on the device first. If the DNS
settings are not configured, the ping operation fails.
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
56 bytes from 1.1.2.2: icmp_seq=4 ttl=254 time=1.991 ms
--- Ping statistics for 1.1.2.2 --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
--- Ping statistics for 1.1.2.2 in VPN instance vpn1 --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
--- Ping statistics for 1.1.2.2 --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
4
# Test whether the device with an IP address of 1.1.2.2 is reachable. The IP addresses of the hops
that the ICMP packets passed in the path are 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)
--- Ping statistics for 1.1.2.2 --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.
• The route is 1.1.1.1 <-> {1.1.1.2; 1.1.2.1} <-> 1.1.2.2.
Table 1 Command output
Field Description
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:
--- Ping statistics for 1.1.2.2 --- Statistics on data received and sent in the ping operation.
--- Ping statistics for 1.1.2.2 in VPN
instance vpn1 ---
5 packet(s) transmitted Number of ICMP echo requests sent.
5 packet(s) received Number of ICMP echo replies received.
Test whether the device with IP address 1.1.2.2 is reachable. There
are 56 bytes in each ICMP echo request. Press
Ctrl+C
ping operation.
Received ICMP echo replies from the device whose IP address is
1.1.2.2. If no echo reply is received within the timeout period, no
information is displayed.
• bytes—Number of bytes in the ICMP echo reply.
• icmp_seq—Packet sequence, used to determine whether a
segment is lost, disordered or repeated.
• ttl—TTL value in the ICMP echo reply.
• time—Response time.
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.
Ping statistics for a device in a VPN instance.
to abort the
0.0% packet loss Percentage of unacknowledged packets 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.
5
ping ipv6
Use ping ipv6 to test the reachability of the destination IPv6 address and di splay IPv6 ping statistics.
-a source-ipv6: Specifies an IPv6 address of the device as the source IP address of ICMP echo
requests. If this option is not specified, the source IPv6 address of ICMP echo requests is the IPv6
address of the outbound interface. See RFC 3484 for information about the address selection rule.
-ccount: Specifies the number of ICMPv6 echo requests that are sent to the destination. The value
range is 1 to 4294967295, and the default is 5.
-i interface-type interface-number: Specifies the source interface for ICMPv6 echo requests. This
option must be specified when the destination address is a multicast addre ss or a link local addre ss.
If you do not specify this option, the system uses the primary IP address of the matching route's
egress interface as the source interface for ICMPv6 echo requests.
-minterval: Specifies the interval (in milliseconds) to send an ICMPv6 echo reply. The value range is
1 to 65535, and the default is 1000.
-q: Displays only the summary statistics. If you do not specify this keyword, the system displays all
the ping statistics.
-s packet-size: Specifies the length (in bytes) of ICMPv6 echo requests (excluding the IPv6 packet
header and the ICMPv6 packet header). The value range is 20 to 8100, and the default is 56.
-t timeout: Specifies the timeout time (in milliseconds) of an ICMPv6 echo reply . The value range is 0
to 65535, and the default is 2000.
-tc traffic-class: Specifies the traffic class value in an ICMPv6 packet. The value range is 0 to 255
and the default is 0.
-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 MPLS L3VPN instance 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.
6
host: Specifies the IPv6 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
T o ping a device identified by its host name, configu re the DNS settings on the device first. If the DNS
settings are not configured, the ping ipv6 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(56 data 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
--- Ping6 statistics for 2001::2 --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 are displayed.
<Sysname> ping ipv6 –q 2001::2
Ping6(56 data bytes) 2001::1 --> 2001::2, press CTRL_C to break
--- Ping6 statistics for 2001::2 --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
Ping6(56 data 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
--- Ping6 statistics for 2001::2 --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 millisecon ds,
25 milliseconds, 62 milliseconds, and 20 milliseconds.
7
Table 2 Command output
Field Description
Ping6(56 data bytes)
2001::1 --> 2001::2, press CTRL_C
to break
56 bytes from 2001::2,
icmp_seq=1 hlim=64 dst=2001::1
idx=3 time=62.000 ms
--- Ping6 statistics for 2001::2 ------ Statistics on data received and sent in an IPv6 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 unacknowledged packets to the total packets sent.
An ICMPv6 echo reply with a data length of 56 bytes is sent from
2001::1 to 2001::2.
Ctrl+C
Press
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.
to abort the ping IPv6 operation.
round-trip min/avg/max/ std-dev
=4.000/25.000/62.000/20.000 ms
tracert
Use tracert to trace the path the packets traverse from source to destination.
Syntax
tracert [ -a source-ip | -f first-ttl | -m max-ttl | -p port | -q packet-number | -t tos | { -topology
-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.
Minimum/average/maximum/standard deviation response time, in
milliseconds.
-f first-ttl: Specifies the TTL of the first packet sent to the destin ation. 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.
8
-p port: Specifies an invalid UDP port of the destination. The value range is 1 to 65535, and the
default is 33434. If the destination address is an EID address at a remote LISP site, specify a port
number in the range of 33434 to 65535.
-qpacket-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.
-topology topo-name: Specifies the topology to which the destination belongs, where topo-name is
a case-sensitive string of 1 to 31 characters. If the destination is on the public network, do not specify
this option.
-vpn-instance vpn-instance-name: Specifies the MPLS L3VPN instance 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.
-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.
9
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 (1.1.1.2) 673 ms 425 ms 30 ms
2 1.1.2.2 (1.1.2.2) [AS 100] 580 ms 470 ms 80 ms
# Display the path that the packets traverse from source to destination (1.1.3.2) in VPN instance
vpn1, as well as the AS information of the hops along the path.
<Sysname> tracert –vpn-instance vpn1 –resolve-as vpn 1.1.3.2
traceroute to 1.1.3.2 (1.1.3.2), 30 hops at most, 40 bytes each packet, press CTRL_C to
break
1 1.1.1.2 (1.1.1.2) 673 ms 425 ms 30 ms
2 1.1.2.2 (1.1.2.2) 580 ms 470 ms 80 ms
3 1.1.3.2 (1.1.3.2) [AS 65535] 530 ms 472 ms 380 ms
# Trace the path to destination (192.1 68.0.46) 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 Description
traceroute to 1.1.2.2 (1.1.2.2)
hops at most
bytes each packet Number of bytes of a probe packet.
press CTRL_C to break
2 1.1.2.2 (1.1.2.2) [AS 100]
580 ms 470 ms 80 ms
Display the route that the IP packets traverse from the current device to the
device whose IP address is 1.1.2.2.
Maximum number of hops of the probe packets, which can be set by the -m
keyword.
During the execution of the command, press
operation.
Probe result of the probe packets that contain a TTL value of 2, including
the following information about the second hop:
•Domain name of the hop. If no domain name is configured, the IP
address is displayed as the domain name.
• IP address of the hop. The IP address is displayed in parentheses.
• Number of the AS that the hop belongs to. The AS number appears
only when it is found for the hop in the specified routing table.
•The round-trip time of the probe packets.
The number of packets that can be sent in each probe can be set by using
-q
the
keyword.
Ctrl+C
to abort the tracert
10
Field Description
MPLS Label=100048 Exp=0
TTL=1 S=1
tracert ipv6
Use tracertipv6 to display the path that the IPv6 packets traverse from source to destination.
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.
Predefined user roles
network-admin
Parameters
-f first-hop: Specifies the TTL value of the first packet. The value range is 1 to 25 5, and the default is
1. The value must be no greater than the value of the max-hops argument.
-m max-hops: Specifies the maximum number of hops allowed for a packet. The value ran ge i s 1 to
255, and the default is 30. The value must be no smaller than the value of the first-hop argument.
-p port: Specifies an invalid UDP port of the destination. The value range is 1 to 65535, and the
default is 33434.
-qpacket-number: Specifies the number of probe packets sent each time. The value range is 1 to
65535, and the default is 3.
-ttraffic-class: Specifies the traffic class value in an IPv6 probe packet. The value ran ge i s 0 t o 255,
and the default is 0.
-vpn-instancevpn-instance-name: Specifies the MPLS L3VPN instance 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.
-resolve-as: Specifies a routing table for AS resolutio n. 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.
11
• 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 of a probe packet. The
value range is 1 to 65535, and the default is 5000.
host: Specifies the IPv6 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 ipv6 command, you can use the tracert ipv6
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 ipv6 command twice, once with the -resolve-as global
keywords and again with the -resolve-as vpn keywords.
The output from the tracertipv6 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.
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
12
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.
Probe result of the probe packets that contain a hoplimit value of 2,
including the following information about the second hop:
•IPv6 address of the hop.
2 2001:2::2 [AS 100] 0.861 ms
0.718 ms 0.679 ms
•Number of the AS the hop belongs to. The AS number appears
only when it is found for the hop in the specified routing table.
•The round-trip time of the probe packets.
The number of packets that can be sent in each probe can be set by
using the
-q
keyword.
13
NQA commands
NQA client commands
advantage-factor
Use advantage-factor to set the advantage factor to be used for calculating Mean Opinion Scores
(MOS) and Calculated Planning Impairment Factor (ICPIF) values.
Use undo advantage-factor to restore the default.
Syntax
advantage-factor factor
undo advantage-factor
Default
The advantage factor is 0.
Views
Voice operation view
Predefined user roles
network-admin
Parameters
factor: Specifies the advantage factor in the range of 0 to 20.
Usage guidelines
The evaluation of voice quality depends on users' tolerance for voice quality. For users with higher
tolerance for voice quality, use the advantage-factor command to set an advantage factor. When
the system calculates the ICPIF value, it subtracts the advantage factor to modify ICPIF and MOS
values for voice quality evaluation.
Examples
# Set the advantage factor to 10 for the voice operation.
<Sysname> system-view
[Sysname] nqa entry admin test
[Sysname-nqa-admin-test] type voice
[Sysname-nqa-admin-test-voice] advantage-factor 10
codec-type
Use codec-type to configure the codec type for the voice operation.
string: Specifies a case-sensitive string of 1 to 200 characters.
Usage guidelines
If the payload length is smaller than the string length, only the first part of the string is filled. For
example, if you configure the string as abcd and set the payload size to 3 bytes, abc is filled.
If the payload length is greater than the string length, the system fills the payload with the string
cyclically until the payload is full. For example, if you configure the string as abcd and the payload
size as 6 bytes, abcdab is filled.
How the string is filled depends on the operation type.
• For the ICMP echo operation, the string fills the whole payload of an ICMP echo request.
• For the UDP echo operation, the first five bytes of the payload of a UDP packet are for special
purpose. The string fills the remaining part of payload.
•For the UDP jitter operation, the first 68 bytes of the payload of a UDP packet are for special
purpose. The string fills the remaining part of the payload.
•For the voice operation, the first 16 bytes of the payload of a UDP packet are for special
purpose. The string fills the remaining part of the payload.
•For the path jitter operation, the first four bytes of the payload of an ICMP echo request are for
special purpose. The string fills the remaining part of payload.
Examples
# Specify abcd as the payload fill string for ICMP echo requests.
<Sysname> system-view
[Sysname] nqa entry admin test
[Sysname-nqa-admin-test] type icmp-echo
[Sysname-nqa-admin-test-icmp-echo] data-fill abcd
data-size
Use data-size to set the payload size for each probe packet.
Use undo data-size to restore the default.
Syntax
data-size size
Default
undo data-size
The default payload size of a probe packet for different operations is describe d in Tab l e 5 .
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