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unicast-suppression, Syntax, Default, Views, Predefined user roles, Parameters, Usage guidelines

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• storm-constrain control unicast-suppression Use unicast-suppression to enable unicast storm suppression and set the unicast storm suppression threshold. Use undo unicast-suppression to restore the default. Syntax unicast-suppression { ratio | pps max-pps | kbps max-kbps } undo unicast-suppression Default Ethernet interfaces do not suppress unicast traffic. Views Ethernet interface view Predefined user roles network-admin Parameters ratio: Sets the unicast suppression threshold as a percentage of the maximum interface rate. The value range for this argument (in percentage) is 0 to 100. The smaller the percentage, the less unicast traffic is allowed to pass through. pps max-pps: Specifies the maximum number of unicast 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 unicast 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 unicast storm suppression function to limit the size of unicast traffic on an interface. When the unicast traffic on the interface exceeds this threshold, the system discards packets until the unicast traffic drops below this threshold. Both the storm-constrain and unicast-suppression can suppress unicast storm on a port. The storm-constrain command uses software to suppress unicast traffic, and it affects the device performance to a certain extent. The unicast-suppression command use the chip to physically suppress unicast traffic, and it has less influence on the device performance than the storm-constrain command. Do not configure the storm constrain command and the unicast-suppression command on a port. Otherwise, the unicast traffic suppression result is not determined. When you configure the suppression threshold in pps or kbps, the device might convert the configured value into a multiple of a certain step supported by the chip. As a result, the actual suppression threshold might be different from the configured one. To determine the suppression threshold that takes effect, see the prompts on the device. Examples # Set the unicast storm suppression threshold to 10000 kbps on Ten-GigabitEthernet 1/1/5. 32

Section	Page
Title Page	1
Contents	3
Ethernet interface commands	8
broadcast-suppression	8
default	9
description	9
display counters	10
display counters rate	11
display interface	13
display interface brief	18
display packet-drop	21
display storm-constrain	22
duplex	23
flow-control	24
flow-control receive enable	24
flow-interval	25
interface	26
jumboframe enable	26
link-delay	27
loopback	28
multicast-suppression	28
priority-flow-control	30
priority-flow-control no-drop dot1p	30
reset counters interface	32
reset packet-drop interface	33
shutdown	33
speed	34
storm-constrain	35
storm-constrain control	36
storm-constrain enable log	37
storm-constrain enable trap	37
storm-constrain interval	38
unicast-suppression	39
using fortygige	40
using tengige	41
Loopback and null interface commands	42
default	42
description	42
display interface loopback	43
display interface null	46
interface loopback	47
interface null	48
reset counters interface loopback	49
reset counters interface null	49
shutdown	50
Bulk interface configuration commands	51
interface range	51
interface range name	52
MAC address table commands	54
display mac-address	54
display mac-address nickname	55
display mac-address aging-time	56
display mac-address mac-learning	56
display mac-address statistics	57
mac-address (interface view)	58
mac-address (system view)	60
mac-address mac-learning enable	61
mac-address mac-learning priority	62
mac-address mac-roaming enable	63
mac-address max-mac-count	64
mac-address multiport (interface view)	65
mac-address multiport (system view)	66
mac-address timer	67
MAC Information commands	69
mac-address information enable (interface view)	69
mac-address information enable (system view)	70
mac-address information interval	70
mac-address information mode	71
mac-address information queue-length	71
Ethernet link aggregation commands	73
default	73
description	73
display interface	74
display lacp system-id	77
display link-aggregation load-sharing mode	78
display link-aggregation member-port	79
display link-aggregation summary	81
display link-aggregation verbose	82
interface bridge-aggregation	85
lacp period short	86
lacp system-priority	86
link-aggregation global load-sharing mode	87
link-aggregation ignore vlan	88
link-aggregation lacp traffic-redirect-notification enable	89
link-aggregation load-sharing mode	90
link-aggregation load-sharing mode local-first	91
link-aggregation mode	91
link-aggregation port-priority	92
link-aggregation selected-port maximum	93
link-aggregation selected-port minimum	94
port link-aggregation group	94
reset counters interface	95
reset lacp statistics	96
shutdown	96
Port isolation commands	98
display port-isolate group	98
port-isolate enable	98
port-isolate group	99
Spanning tree commands	101
active region-configuration	101
bpdu-drop any	101
check region-configuration	102
display stp	103
display stp abnormal-port	108
display stp bpdu-statistics	109
display stp down-port	111
display stp history	112
display stp region-configuration	113
display stp root	114
display stp tc	115
instance	116
region-name	117
reset stp	117
revision-level	118
stp bpdu-protection	119
stp bridge-diameter	119
stp compliance	120
stp config-digest-snooping	121
stp cost	122
stp edged-port	123
stp enable	124
stp global config-digest-snooping	125
stp global enable	125
stp global mcheck	126
stp loop-protection	127
stp max-hops	128
stp mcheck	128
stp mode	129
stp no-agreement-check	130
stp pathcost-standard	130
stp point-to-point	131
stp port priority	132
stp port-log	133
stp priority	134
stp region-configuration	135
stp role-restriction	135
stp root primary	136
stp root secondary	137
stp root-protection	137
stp tc-protection	138
stp tc-protection threshold	139
stp tc-restriction	139
stp timer forward-delay	140
stp timer hello	141
stp timer max-age	142
stp timer-factor	143
stp transmit-limit	143
vlan-mapping modulo	144
Loop detection commands	146
display loopback-detection	146
loopback-detection action	146
loopback-detection enable	147
loopback-detection global action	148
loopback-detection global enable	149
loopback-detection interval-time	150
VLAN commands	151
Basic VLAN commands	151
default	151
description	151
display interface vlan-interface	152
display vlan	155
interface vlan-interface	156
mtu	157
name	158
service	159
shutdown	159
vlan	160
Port-based VLAN commands	161
display port	161
port	162
port access vlan	163
port hybrid pvid	164
port hybrid vlan	165
port link-type	166
port trunk permit vlan	167
port trunk pvid	168
QinQ commands	170
display qinq	170
qinq enable	171
qinq ethernet-type customer-tag	171
qinq ethernet-type service-tag	172
qinq transparent-vlan	173
VLAN mapping commands	175
display vlan mapping	175
vlan mapping	176
LLDP commands	179
dcbx version	179
display lldp local-information	179
display lldp neighbor-information	185
display lldp statistics	193
display lldp status	194
display lldp tlv-config	196
lldp admin-status	197
lldp agent nearest-nontpmr admin-status	198
lldp check-change-interval	198
lldp compliance admin-status cdp	199
lldp compliance cdp	200
lldp enable	200
lldp encapsulation snap	201
lldp fast-count	202
lldp global enable	202
lldp hold-multiplier	203
lldp management-address-format string	204
lldp notification med-topology-change enable	204
lldp notification remote-change enable	205
lldp timer notification-interval	205
lldp timer reinit-delay	206
lldp timer tx-delay	206
lldp timer tx-interval	207
lldp tlv-enable	208
Service loopback group commands	211
display service-loopback group	211
port service-loopback group	211
service-loopback group	212
Cut-through forwarding commands	214
cut-through enable	214
Support and other resources	215
Contacting HP	215
Subscription service	215
Related information	215
Documents	215
Websites	215
Conventions	216
Command conventions	216
GUI conventions	216
Symbols	216
Network topology icons	217
Port numbering in examples	217

Match case Limit results 1 per page

•

storm-constrain control

unicast-suppression

Use

unicast-suppression

to enable unicast storm suppression and set the unicast storm suppression

threshold.

Use

undo unicast-suppression

to restore the default.

Syntax

unicast-suppression

{

ratio

pps

max-pps

kbps

max-kbps

}

undo

unicast-suppression

Default

Ethernet interfaces do not suppress unicast traffic.

Views

Ethernet interface view

Predefined user roles

network-admin

Parameters

ratio

: Sets the unicast suppression threshold as a percentage of the maximum interface rate. The value

range for this argument (in percentage) is 0 to 100. The smaller the percentage, the less unicast traffic is

allowed to pass through.

pps

max-pps

: Specifies the maximum number of unicast 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 unicast 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 unicast storm suppression function to limit the size of unicast traffic on an interface. When

the unicast traffic on the interface exceeds this threshold, the system discards packets until the unicast

traffic drops below this threshold.

Both the

storm-constrain

and

unicast-suppression

can suppress unicast storm on a port. The

storm-constrain

command uses software to suppress unicast traffic, and it affects the device performance

to a certain extent. The

unicast-suppression

command use the chip to physically suppress unicast traffic,

and it has less influence on the device performance than the

storm-constrain

command. Do not configure

the

storm constrain

command and the

unicast-suppression

command on a port. Otherwise, the unicast

traffic suppression result is not determined.

When you configure the suppression threshold in pps or kbps, the device might convert the configured

value into a multiple of a certain step supported by the chip. As a result, the actual suppression threshold

might be different from the configured one. To determine the suppression threshold that takes effect, see

the prompts on the device.

Examples

# Set the unicast storm suppression threshold to 10000 kbps on Ten-GigabitEthernet 1/1/5.