HP 5900 Installation manual
HP 5920 & 5900 Switch Series
Layer 2 - LAN Switching
Command Reference
Part number: 5998-2882
Software version: Release2207
Document version: 6W100-20121130
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Contents
Ethernet interface commands ······································································································································ 1
broadcast-suppression ·············································································································································1
default········································································································································································2
description·································································································································································2
display counters························································································································································3
display counters rate················································································································································4
display interface ·······················································································································································6
display interface brief ··········································································································································· 11
display packet-drop··············································································································································· 14
display storm-constrain ········································································································································· 15
duplex····································································································································································· 16
flow-control····························································································································································· 17
flow-control receive enable ·································································································································· 18
flow-interval···························································································································································· 18
interface·································································································································································· 19
jumboframe enable ··············································································································································· 19
link-delay ································································································································································ 20
loopback ································································································································································ 21
multicast-suppression············································································································································· 22
priority-flow-control················································································································································ 23
priority-flow-control no-drop dot1p······················································································································ 24
reset counters interface ········································································································································· 25
reset packet-drop interface··································································································································· 26
shutdown ································································································································································ 26
speed ······································································································································································ 27
storm-constrain ······················································································································································· 28
storm-constrain control ·········································································································································· 29
storm-constrain enable log ··································································································································· 30
storm-constrain enable trap ·································································································································· 31
storm-constrain interval ········································································································································· 31
unicast-suppression················································································································································ 32
using fortygige······················································································································································· 33
using tengige ························································································································································· 34
Loopback and null interface commands···················································································································36
default····································································································································································· 36
description······························································································································································ 36
display interface loopback··································································································································· 37
display interface null ············································································································································· 40
interface loopback ················································································································································ 41
interface null··························································································································································· 42
reset counters interface loopback························································································································ 42
reset counters interface null ·································································································································· 43
shutdown ································································································································································ 44
Bulk interface configuration commands ···················································································································45
interface range ······················································································································································ 45
interface range name············································································································································ 46
ii
MAC address table commands·································································································································48
display mac-address ············································································································································· 48
display mac-address aging-time ·························································································································· 49
display mac-address mac-learning ······················································································································ 50
display mac-address statistics ······························································································································ 51
mac-address (interface view)································································································································ 52
mac-address (system view) ··································································································································· 53
mac-address mac-learning enable······················································································································· 54
mac-address mac-learning priority ······················································································································ 56
mac-address mac-roaming enable······················································································································· 57
mac-address max-mac-count ································································································································ 57
mac-address multiport (interface view)················································································································ 58
mac-address multiport (system view) ··················································································································· 59
mac-address timer ················································································································································· 60
MAC Information commands ····································································································································62
mac-address information enable (interface view) ······························································································ 62
mac-address information enable (system view)·································································································· 63
mac-address information interval························································································································· 63
mac-address information mode···························································································································· 64
mac-address information queue-length················································································································ 64
Ethernet link aggregation commands ·······················································································································66
default····································································································································································· 66
description······························································································································································ 66
display interface ···················································································································································· 67
display lacp system-id ··········································································································································· 70
display link-aggregation load-sharing mode······································································································ 71
display link-aggregation member-port ················································································································ 72
display link-aggregation summary······················································································································· 74
display link-aggregation verbose ························································································································ 75
interface bridge-aggregation ······························································································································· 78
lacp period short ··················································································································································· 79
lacp system-priority················································································································································ 79
link-aggregation global load-sharing mode ······································································································· 80
link-aggregation lacp traffic-redirect-notification enable··················································································· 81
link-aggregation load-sharing mode ··················································································································· 82
link-aggregation load-sharing mode local-first ··································································································· 83
link-aggregation mode·········································································································································· 83
link-aggregation port-priority································································································································ 84
link-aggregation selected-port maximum ············································································································ 85
link-aggregation selected-port minimum ············································································································· 85
port link-aggregation group ································································································································· 86
reset counters interface ········································································································································· 87
reset lacp statistics················································································································································· 88
shutdown ································································································································································ 88
Port isolation commands············································································································································89
display port-isolate group····································································································································· 89
port-isolate enable················································································································································· 89
port-isolate group ·················································································································································· 90
Spanning tree commands··········································································································································92
active region-configuration··································································································································· 92
bpdu-drop any ······················································································································································· 92
check region-configuration ··································································································································· 93
iii
display stp ······························································································································································ 94
display stp abnormal-port····································································································································· 99
display stp bpdu-statistics ···································································································································100
display stp down-port··········································································································································102
display stp history················································································································································103
display stp region-configuration ························································································································104
display stp root ····················································································································································105
display stp tc························································································································································106
instance ································································································································································107
region-name ·························································································································································108
reset stp ································································································································································108
revision-level·························································································································································109
stp bpdu-protection··············································································································································110
stp bridge-diameter ·············································································································································110
stp compliance·····················································································································································111
stp config-digest-snooping ··································································································································112
stp cost··································································································································································113
stp edged-port······················································································································································114
stp enable·····························································································································································115
stp global config-digest-snooping······················································································································116
stp global enable·················································································································································116
stp global mcheck ···············································································································································117
stp loop-protection···············································································································································117
stp max-hops ························································································································································118
stp mcheck····························································································································································119
stp mode·······························································································································································120
stp no-agreement-check ······································································································································120
stp pathcost-standard ··········································································································································121
stp point-to-point ··················································································································································122
stp port priority ····················································································································································123
stp port-log ···························································································································································124
stp priority ····························································································································································124
stp region-configuration ······································································································································125
stp role-restriction·················································································································································126
stp root primary ···················································································································································126
stp root secondary···············································································································································127
stp root-protection················································································································································128
stp tc-protection····················································································································································129
stp tc-protection threshold ···································································································································129
stp tc-restriction ····················································································································································130
stp timer forward-delay·······································································································································131
stp timer hello·······················································································································································131
stp timer max-age ················································································································································132
stp timer-factor ·····················································································································································133
stp transmit-limit ···················································································································································134
vlan-mapping modulo ·········································································································································135
Loop detection commands······································································································································ 136
display loopback-detection·································································································································136
loopback-detection action ··································································································································136
loopback-detection enable ·································································································································137
loopback-detection global action ······················································································································138
loopback-detection global enable ·····················································································································139
loopback-detection interval-time ························································································································140
iv
VLAN commands ···················································································································································· 141
Basic VLAN commands ···············································································································································141
default···································································································································································141
description····························································································································································141
display interface vlan-interface ··························································································································142
display vlan··························································································································································144
interface vlan-interface········································································································································146
mtu ········································································································································································147
name·····································································································································································147
shutdown ······························································································································································148
vlan ·······································································································································································149
Port-based VLAN commands ······································································································································150
display port ··························································································································································150
port········································································································································································151
port access vlan···················································································································································152
port hybrid pvid···················································································································································152
port hybrid vlan ···················································································································································154
port link-type ························································································································································155
port trunk permit vlan··········································································································································155
port trunk pvid ·····················································································································································156
QinQ commands····················································································································································· 158
display qinq ·························································································································································158
qinq enable··························································································································································159
qinq ethernet-type customer-tag ·························································································································159
qinq ethernet-type service-tag ····························································································································160
qinq transparent-vlan ··········································································································································161
VLAN mapping commands ···································································································································· 163
display vlan mapping ·········································································································································163
vlan mapping·······················································································································································164
LLDP commands······················································································································································· 167
display lldp local-information·····························································································································167
display lldp neighbor-information······················································································································172
display lldp statistics ···········································································································································179
display lldp status················································································································································180
display lldp tlv-config ··········································································································································182
lldp admin-status··················································································································································184
lldp agent nearest-nontpmr admin-status···········································································································184
lldp check-change-interval ··································································································································185
lldp enable ···························································································································································185
lldp encapsulation snap······································································································································186
lldp fast-count·······················································································································································186
lldp global enable ···············································································································································187
lldp hold-multiplier···············································································································································188
lldp management-address-format string ············································································································188
lldp notification med-topology-change enable·································································································189
lldp notification remote-change enable·············································································································189
lldp timer notification-interval ·····························································································································190
lldp timer reinit-delay ··········································································································································191
lldp timer tx-delay················································································································································191
lldp timer tx-interval ·············································································································································192
lldp tlv-enable·······················································································································································192
v
Service loopback group commands ······················································································································ 195
display service-loopback group·························································································································195
port service-loopback group ······························································································································195
service-loopback group ······································································································································196
Cut-through forwarding commands ······················································································································· 198
cut-through enable···············································································································································198
Support and other resources ·································································································································· 199
Contacting HP ······························································································································································199
Subscription service ············································································································································199
Related information······················································································································································199
Documents····························································································································································199
Websites·······························································································································································199
Conventions ··································································································································································200
Index ········································································································································································ 202
1
Ethernet interface commands
broadcast-suppression
Use broadcast-suppression to enable broadcast suppression and set the broadcast suppression
threshold.
Use undo broadcast-suppression to restore the default.
Syntax
broadcast-suppression { ratio |pps max-pps |kbps max-kbps }
undo broadcast-suppression
Default
Ethernet interfaces do not suppress broadcast traffic.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
ratio: Sets the broadcast suppression threshold as a percentage of the maximum interface rate. The value
range for this argument is 0 to 100. The smaller the percentage, the less broadcast traffic is allowed to
pass through.
pps max-pps: Specifies the maximum number of broadcast packets that the interface can forward per
second. The value range for the max-pps argument (in pps) is 1 to 1.4881 × the maximum interface rate.
For example, the value range for this argument is 1 to 1488100 on a GE interface and 1 to 59524000
on a 40-GE interface.
kbps max-kbps: Specifies the maximum number of kilobits of broadcast traffic that the Ethernet interface
can forward per second. The value range for this argument (in kbps) is 1 to the maximum interface rate.
Usage guidelines
You can use the broadcast storm suppression function to limit the size of broadcast traffic on an interface.
When the broadcast traffic on the interface exceeds this threshold, the system drops packets until the
traffic drops below this threshold.
Both storm-constrain and broadcast-suppression can suppress broadcast storm on a port. The
storm-constrain command uses software to suppress broadcast traffic, and it affects the device
performance to a certain extent. The broadcast-suppression command uses the chip to physically
suppress broadcast traffic, and it has less influence on the device performance than the storm-constrain
command. Do not configure the storm constrain command and the broadcast-suppression command on
a port. Otherwise, the traffic suppression result is not determined.
When you configure the suppression threshold in pps or kbps, the device may convert the configured
value into a multiple of a certain step supported by the chip. As a result, the actual suppression threshold
may be different from the configured one. To determine the suppression threshold that takes effect, see
the prompts on the device.
2
Examples
# Set the broadcast suppression threshold to 10000 kbps on Ten-GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface ten-gigabitethernet 1/0/1
[Sysname-Ten-GigabitEthernet1/0/1] broadcast-suppression kbps 10000
Related commands
•multicast-suppression
•unicast-suppression
default
Use default to restore the default settings for an Ethernet interface.
Syntax
default
Views
Ethernet interface view
Predefined user roles
network-admin
Usage guidelines
CAUTION:
The default command might interrupt ongoing network services. Make sure you are fully aware of the
impacts of this command when you use it in a live network.
This command might fail to restore the default settings for some commands for reasons such as command
dependencies and system restrictions. Use the display this command in interface view to identify these
commands, and then use their undo forms or follow the command reference to individually restore their
default settings. If your restoration attempt still fails, follow the error message instructions to resolve the
problem.
Examples
# Restore the default settings for interface Ten-GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface ten-gigabitethernet 1/0/1
[Sysname-Ten-GigabitEthernet1/0/1] default
description
Use description to change the description of an interface.
Use undo description to restore the default.
Syntax
description text
undo description
3
Default
The description of an interface is the interface name plus Interface (for example,
Ten-GigabitEthernet1/0/1 Interface).
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
text: Specifies the interface description, a case-sensitive string of 1 to 80 characters.
Usage guidelines
When you use a network management system (for example, IMC) to manage devices, to guarantee the
normal operation of the network management system, make sure the text argument is of no more than 64
characters.
Examples
# Change the description of interface Ten-GigabitEthernet 1/0/1 to lanswitch-interface.
<Sysname> system-view
[Sysname] interface ten-gigabitethernet 1/0/1
[Sysname-Ten-GigabitEthernet1/0/1] description lanswitch-interface
display counters
Use display counters to display interface traffic statistics.
Syntax
display counters {inbound |outbound }interface [ interface-type [ interface-number ] ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
inbound: Displays inbound traffic statistics.
outbound: Displays outbound traffic statistics.
interface-type: Specifies an interface type.
interface-number: Specifies an interface number.
Usage guidelines
This command displays traffic statistics within a statistics polling interval specified by the flow-interval
command.
To clear the Ethernet interface traffic statistics, use the reset counters interface command. For more
information, see "reset counters interface."
4
If no interface type is specified, this command displays traffic statistics for all interfaces that have traffic
counters.
If an interface type is specified but no interface number is specified, this command displays traffic
statistics for all interfaces of the specified type.
If an interface type and an interface number are specified, this command displays traffic statistics of the
specified interface.
Examples
# Display inbound traffic statistics for 40GE interfaces.
<Sysname> display counters inbound interface fortygige
Interface Total (pkts) Broadcast (pkts) Multicast (pkts) Err (pkts)
FGE1/0/49 0 0 0 0
FGE1/0/50 0 0 0 0
FGE1/0/51 0 0 0 0
FGE1/0/52 0 0 0 0
Overflow: More than 14 digits (7 digits for column "Err").
--: Not supported.
Table 1 Command output
Field Description
Interface Abbreviated interface name.
Total (pkts) Total number of packets received or sent through the interface.
Broadcast (pkts) Total number of broadcast packets received or sent through the interface.
Multicast (pkts) Total number of multicast packets received or sent through the interface.
Err (pkts) Total number of error packets received or sent through the interface.
Overflow: More than 14
digits (7 digits for column
"Err")
The command displays Overflow if any of the following cases applies:
•The data length of an Err field value is greater than 7 decimal digits.
•The data length of a non-Err field value is greater than 14 decimal digits.
--: Not supported The statistical item is not supported.
Related commands
•flow-interval
•reset counters interface
display counters rate
Use display counters rate to display traffic rate statistics of interfaces in up state over the last statistics
polling interval.
Syntax
display counters rate {inbound |outbound }interface [ interface-type [ interface-number ] ]
Views
Any view
5
Predefined user roles
network-admin
network-operator
Parameters
inbound: Displays inbound traffic rate statistics.
outbound: Displays outbound traffic rate statistics.
interface-type: Specifies an interface type.
interface-number: Specifies an interface number.
Usage guidelines
The statistics cover only interfaces in up state.
If an interface type is specified, the command displays traffic rate statistics for all up interfaces of the
specified type over the last statistics polling interval.
If no interface type is specified, the command displays traffic rate statistics for all up interfaces that have
traffic counters over the last statistics polling interval.
If an interface which is always down over the last statistics polling interval is specified, the system prompts
that the interface does not support the command.
You can use the flow-interval command to set the statistics polling interval.
Examples
# Display the inbound traffic rate statistics for all Ten-GigabitEthernet interfaces.
<Sysname> display counters rate inbound interface ten-gigabitethernet
Interface Total (pps) Broadcast (pps) Multicast (pps)
XGE1/0/15 0 -- --
XGE1/0/27 0 -- --
Overflow: More than 14 digits.
--: Not supported.
Table 2 Command output
Field Description
Interface Abbreviated interface name.
Total (pkts/sec) Average rate (in pps) of receiving or sending packets during the statistics
polling interval.
Broadcast (pkts/sec) Average rate (in pps) of receiving or sending broadcast packets during the
statistics polling interval.
Multicast (pkts/sec) Average rate (in pps) of receiving or sending multicast packets during the
statistics polling interval.
Overflow: more than 14
decimal digits
The command displays Overflow if the data length of a statistical item is
greater than 14 decimal digits.
--: not supported The statistical item is not supported.
Related commands
•flow-interval
6
•reset counters interface
display interface
Use display interface to display Ethernet interface information.
Syntax
display interface [ interface-type [ interface-number ] ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface-type: Specifies an interface type.
interface-number: Specifies an interface number.
Usage guidelines
If no interface type is specified, this command displays information about all interfaces.
If an interface type is specified but no interface number is specified, this command displays information
about all interfaces of that type.
If both the interface type and interface number are specified, this command displays information about
the specified interface.
Examples
# Display detailed information about interface Ten-GigabitEthernet 1/0/1.
<Sysname> display interface ten-gigabitethernet 1/0/1
Ten-GigabitEthernet1/0/1 current state: DOWN
Line protocol current state: DOWN
IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 00e0-fc00-584c
Description: Ten-GigabitEthernet1/0/1 Interface
Loopback is not set
Media type is not sure,Port hardware type is No connector
Unknown-speed mode, unknown-duplex mode
Link speed type is autonegotiation, link duplex type is autonegotiation
Flow-control is not enabled
The Maximum Frame Length is 10000
Allow jumbo frame to pass
Broadcast MAX-ratio: 100%
Multicast MAX-ratio: 100%
Unicast MAX-ratio: 100%
PVID: 1
Port link-type: access
Tagged Vlan: none
UnTagged Vlan: 1
Port priority: 0
7
Last clearing of counters: Never
Peak value of input: 0 bytes/sec, at 2011-01-01 22:10:43
Peak value of output: 0 bytes/sec, at 2011-01-01 22:10:43
Last 300 seconds input: 0 packets/sec 0 bytes/sec -%
Last 300 seconds output: 0 packets/sec 0 bytes/sec -%
Input (total): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Input (normal): 0 packets, - bytes
0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Input: 0 input errors, 0 runts, 0 giants, 0 throttles
0 CRC, 0 frame, - overruns, 0 aborts
- ignored, - parity errors
Output (total): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Output (normal): 0 packets, - bytes
0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Output: 0 output errors, - underruns, - buffer failures
0 aborts, 0 deferred, 0 collisions, 0 late collisions
0 lost carrier, - no carrier
Table 3 Command output
Field Description
Ten-GigabitEthernet 1/0/1 current state
The state of the Ethernet interface:
•Administratively DOWN—The Ethernet interface was shut down
with the shutdown command. The interface is administratively
down.
•DOWN—The Ethernet interface is administratively up but
physically down (possibly because no physical link is present or
the link has failed).
•UP—The Ethernet interface is both administratively and
physically up.
IP Packet Frame Type Ethernet frame format. The value PKTFMT_ETHNT_2 indicates that
the Ethernet frame format is Ethernet II.
Unknown-speed mode
Indicate that the rate of the interface is unknown. The reason may
be that the speed negotiation fails or the physical interface is
disconnected.
unknown-duplex mode
Indicate that the duplex mode of the interface is unknown. The
reason may be that the duplex mode negotiation fails or the
physical interface is disconnected.
Link speed type is autonegotiation The interface will negotiate a speed with its peer.
Link speed type is force link The speed of the interface is configured as a specific value, for
example, 1000 Mbps.
link duplex type is autonegotiation The interface will negotiate a duplex mode with its peer.
link duplex type is force link The interface is configured to operate in a specific duplex mode, for
example, full duplex mode.
The Maximum Frame Length The maximum Ethernet frame length allowed on the interface.
8
Field Description
Broadcast MAX- Broadcast storm suppression threshold, in percent, pps, or kbps
depending on your configuration.
Multicast MAX- Multicast storm suppression threshold, in percent, pps, or kbps
depending on your configuration.
Unicast MAX- Unknown unicast storm suppression threshold, in percent, pps, or
kbps depending on your configuration.
PVID Port VLAN ID (PVID) of the Ethernet interface.
Port link-type Link type of the interface, which can be access, trunk, or hybrid.
Tagged Vlan VLANs for which the interface sends packets without removing
VLAN tags.
UnTagged Vlan VLANs for which the interface sends packets after removing VLAN
tags.
Last clearing of counters
Time when the reset counters interface command was last used to
clear statistics on the interface. Never indicates that the reset
counters interface command was never used since the device was
started.
Peak value of output Peak value of inbound traffic (in Bps), and time of peak inbound
traffic.
Peak time of output Peak value of outbound traffic (in Bps), and time of peak outbound
traffic.
Last 300 seconds input: 0 packets/sec 0
bytes/sec -%
Last 300 seconds output: 0 packets/sec
0 bytes/sec -%
Average rate of input and output traffic in the last 300 seconds, in
pps and Bps, and the ratio of the actual rate to the maximum
interface rate in %.
A hyphen (-) indicates that the item is not supported.
Input(total): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0
multicasts, 0 pauses
Inbound traffic statistics (in packets and bytes) for the interface. All
inbound normal and abnormal packets and normal pause frames
were counted.
The number of inbound unicast packets, the number of inbound
broadcasts, the number of inbound multicasts, and the number of
inbound pause frames.
A hyphen (-) indicates that the item is not supported.
Input(normal): 0 packets, - bytes
0 unicasts, 0 broadcasts, 0
multicasts, 0 pauses
Inbound normal traffic and pause frame statistics (in packets and
bytes) for the interface.
The number of normal unicast packets, the number of normal
broadcasts, the number of normal multicasts, and the number of
normal pause frames.
A hyphen (-) indicates that the item is not supported.
input errors The number of inbound packets with errors.
runts The number of inbound frames shorter than 64 bytes, in correct
format, and containing valid CRCs.
9
Field Description
giants
The number of inbound frames larger than the maximum frame
length supported on the interface.
IMPORTANT:
•For an Ethernet interface that does not permit jumbo frames, if
the port is a QSFP+ port, or an SFP+ port with a 10-Gigabit
transceiver module plugged, giants refer to frames larger than
1536 bytes (excluding the 4 bytes of CRC and ignoring the
VLAN tags).
•For an Ethernet interface that permits jumbo frames, if the port is
an SFP+ port with a Gigabit transceiver module plugged, giants
refer to frames larger than 1532 bytes (without VLAN tags and
excluding the 4 bytes of CRC) or 1536 bytes (with VLAN tags
and excluding the 4 bytes of CRC).
•For an Ethernet interface that permits jumbo frames, giants refer
to frames larger than the maximum length of Ethernet frames that
are allowed to pass through, which is configured when you
configure jumbo frame support on the interface.
throttles The number of times that the port shut down due to buffer or CPU
overload.
CRC Total number of inbound frames that had a normal length, but
contained CRC errors.
frame Total number of inbound frames that contained CRC errors and a
non-integer number of bytes.
overruns The number of packets dropped because the input rate of the port
exceeded the queuing capability.
10
Field Description
aborts
Total number of illegal inbound packets:
•Fragment frames—CRC error frames shorter than 64 bytes. The
length can be an integral or non-integral value.
•Jabber frames—CRC error frames greater than the maximum
frame length supported on the Ethernet interface (with an
integral or non-integral length).
•Symbol error frames—Frames that contained at least one
undefined symbol.
•Unknown operation code frames—Non-pause MAC control
frames.
•Length error frames—Frames whose 802.3 length fields did not
match the actual frame length (46 to 1500 bytes).
IMPORTANT:
•For an Ethernet interface that does not permit jumbo frames, if
the port is a QSFP+ port, or an SFP+ port with a 10-Gigabit
transceiver module plugged, jabber frames refer to CRC error
frames larger than 1536 bytes (excluding the 4 bytes of CRC
and ignoring the VLAN tags).
•For an Ethernet interface that permits jumbo frames, if the port is
an SFP+ port with a Gigabit transceiver module plugged,
jabber frames refer to CRC error frames larger than 1532 bytes
(without VLAN tags and excluding the 4 bytes of CRC) or 1536
bytes (with VLAN tags and excluding the 4 bytes of CRC).
•For an Ethernet interface that permits jumbo frames, jabber
frames refer to CRC error frames larger than the maximum
length of Ethernet frames that are allowed to pass through,
which is configured when you configure jumbo frame support on
the interface.
ignored The number of inbound frames dropped because the receive buffer
of the port ran low.
parity errors Total number of frames with parity errors.
Output(total): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0
multicasts, 0 pauses
Outbound traffic statistics (in packets and bytes) for the interface.
All outbound normal and abnormal packets and normal pause
frames were counted.
The number of outbound unicast packets, the number of outbound
broadcasts, the number of outbound multicasts, and the number of
outbound pause frames.
A hyphen (-) indicates that the item is not supported.
Output(normal): 0 packets, - bytes
0 unicasts, 0 broadcasts, 0
multicasts, 0 pauses
Outbound normal traffic and pause frame statistics (in packets and
bytes) for the interface.
The number of outbound normal unicast packets, the number of
outbound normal broadcasts, the number of outbound normal
multicasts, and the number of outbound normal pause frames.
A hyphen (-) indicates that the item is not supported.
output errors The number of outbound packets with errors.
11
Field Description
underruns
The number of packets dropped because the output rate of the
interface exceeded the output queuing capability. This is a
low-probability hardware anomaly.
buffer failures The number of packets dropped because the transmit buffer of the
interface ran low.
aborts The number of packets that failed to be transmitted, for example,
because of Ethernet collisions.
deferred The number of frames that the interface deferred to transmit
because of detected collisions.
collisions The number of frames that the interface stopped transmitting
because Ethernet collisions were detected during transmission.
late collisions The number of frames that the interface deferred to transmit after
transmitting their first 512 bits, because of detected collisions.
lost carrier
The number of carrier losses during transmission. This counter
increments by 1 when a carrier is lost, and applies to serial WAN
interfaces.
no carrier
The number of times that the port failed to detect the carrier when
attempting to send frames. This counter increments by 1 when a
port failed to detect the carrier, and applies to serial WAN
interfaces.
Related commands
reset counters interface
display interface brief
Use display interface brief to display brief Ethernet interface information.
Syntax
display interface [ interface-type [ interface-number ] ] brief [ description ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface-type: Specifies an interface type.
interface-number: Specifies an interface number.
description: Displays the full description of the specified interface. If the keyword is not specified, the
command displays at most the first 27 characters of the interface description. If the keyword is specified,
the command displays all characters of the interface description.
Usage guidelines
If no interface type is specified, this command displays information about all interfaces.
12
If an interface type is specified but no interface number is specified, this command displays information
about all interfaces of that type.
If both the interface type and interface number are specified, this command displays information about
the specified interface.
Examples
# Display brief information about all interfaces.
<Sysname> display interface brief
The brief information of interface(s) under route mode:
Link: ADM - administratively down; Stby - standby
Protocol: (s) - spoofing
Interface Link Protocol Main IP Description
Loop1 UP UP(s) -- one
M-GE0/0/0 UP UP 192.168.0.61
NULL0 UP UP(s) --
REG0 DOWN DOWN --
Vlan1 DOWN DOWN --
The brief information of interface(s) under bridge mode:
Link: ADM - administratively down; Stby - standby
Speed or Duplex: (a)/A - auto; H - half; F - full
Type: A - access; T - trunk; H - hybrid
Interface Link Speed Duplex Type PVID Description
BAGG1 DOWN auto A A 1
FGE1/0/49 DOWN 40G F A 50
FGE1/0/51 DOWN 40G F A 52
FGE1/0/52 DOWN 40G F A 53
XGE1/0/1 UP 10G(a) F(a)
XGE1/0/2 DOWN auto A A 3 lanswitch
XGE1/0/3 DOWN auto A A 4 aaaaaaaaaaaaaaaaaaaaaaaaaaa
XGE1/0/4 DOWN auto A A 5
XGE1/0/5 DOWN auto A A 6
XGE1/0/6 DOWN auto A A 7
XGE1/0/7 DOWN auto A A 8
XGE1/0/8 DOWN auto A A 9
XGE1/0/9 DOWN auto A A 10
# Display brief information about interface Ten-GigabitEthernet 1/0/3, including the full description of
the interface.
<Sysname> display interface brief ten-gigabitethernet 1/0/3 description
The brief information of interface(s) under bridge mode:
Link: ADM - administratively down
Speed or Duplex: (a)/A - auto; H - half; F - full
Type: A - access; T - trunk; H - hybrid
Interface Link Speed Duplex Type PVID Description
XGE1/0/3 UP 1000M(a) F(a) A 1 aaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
13
Table 4 Output description
Field Description
The brief information of interface(s)
under route mode: The command displays brief information about Layer 3 interfaces.
Link: ADM - administratively down;
Stby - standby
•ADM—The interface has been shut down by the network
administrator. To recover its physical layer state, use the undo
shutdown command.
•Stby—The interface is a standby interface.
Protocol: (s) – spoofing
If the network layer protocol state of an interface is shown as UP (s), it
means that its link is up at the network layer but the link is an on-demand
link or not present at all. This attribute is typical of interface Null 0 and
the loopback interfaces.
Interface Interface name.
Link
Physical link state of the interface:
•UP—The link is up.
•DOWN—The link is physically down.
•ADM—The link has been administratively shut down. To recover its
physical state, use the undo shutdown command.
•Stby—The interface is a standby interface.
Protocol
Protocol connection state of the interface, which can be UP, DOWN, or
UP(s). UP(s) indicates that the link of the interface is an on-demand link or
not present at all.
Description
Interface description configured by using the description command. If the
description keyword is not specified in the display interface brief
command, the Description field displays at most 27 characters. If the
description keyword is specified in the display interface brief command,
the field displays the full interface description.
The brief information of interface(s)
under bridge mode: Brief information about Layer 2 interfaces.
Speed or Duplex: (a)/A - auto; H -
half; F – full
If the speed of an interface is automatically negotiated, its speed attribute
includes the auto negotiation flag, letter ain parentheses.
If the duplex mode of an interface is automatically negotiated, its duplex
mode attribute includes the following options:
•(a)/A—Auto negotiation
•H—Half negotiation
•F—Full negotiation
Type: A - access; T - trunk; H –
hybrid Link type options for Ethernet interfaces.
Speed Interface rate, in bps.
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