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Command Reference

CloudEngine 8800, 7800, 6800, and 5800 V200R002C50

This document describes all the configuration commands of the device, including the command function, syntax, parameters, views, default level, usage guidelines, examples, and related commands.
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IP Source Guard Configuration Commands

IP Source Guard Configuration Commands

NOTE:
CE6880EI does not support IP Source Guard.

display user-bind static

Function

The display user-bind static command displays information about a static binding table.

Format

display user-bind static { { interface interface-type interface-number | ip-address ip-address | mac-address mac-address | vlan vlan-id } * | all } [ verbose ]

Parameters

Parameter

Description

Value

interface interface-type interface-number

Displays binding entries mapping a specified interface.

  • interface-type specifies the interface type.

  • interface-number specifies the interface number.

-

ip-address ip-address

Displays binding entries mapping a specified IP address.

The value is in dotted decimal notation.

mac-address mac-address

Displays binding entries mapping a specified MAC address.

The value is in hexadecimal notation.

vlan vlan-id

Displays binding entries mapping a specified VLAN ID.

The value is an integer that ranges from 1 to 4094, except reserved VLAN IDs, which can be configured using the vlan reserved command.

all

Displays all entries in the binding table.

-

verbose

Displays detailed information about the binding table.

-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

This command is used to view information about a configured static binding table. The information includes the IP address, MAC address, VLAN information, and interface information.

Example

# Display information about the static binding table.

<HUAWEI> display user-bind static all
Flags: O - outer vlan, I - inner vlan, P - map vlan                             
IP Address                      MAC Address     VSI/VLAN(O/I/P) Interface       
                                                                                
--------------------------------------------------------------------------------
10.1.1.1                        0001-0001-0001  11  /--  /--    10GE2/0/1       
10.1.1.1                        --              11  /--  /--    --              
10.3.3.3                        0003-0003-0003  --  /--  /--    10GE2/0/21      
10.0.0.1                        0001-0001-0001  10  /--  /--    10GE2/0/1       
--------------------------------------------------------------------------------
Print count:           4          Total count:           4                      
Table 16-92  Description of the display user-bind static command output

Item

Description

Flags

VLAN ID.
  • O: Outer VLAN
  • I: Inner VLAN
  • P: VLAN after mapping

IP Address

User IP address.

MAC Address

User MAC address.

VSI

Name of the VSI that the online user belongs to.

VLAN (O/I/P)

ID of the VLAN that the user belongs to.

Interface

User access interface.

display ip source check user-bind

Function

The display ip source check user-bind command displays the IPSG configurations.

Format

display ip source check user-bind [ vlan vlan-id | interface interface-type interface-number ]

Parameters

Parameter Description Value
vlan vlan-id Displays the IP packet check configuration in a specified VLAN. The value is an integer that ranges from 1 to 4094, except reserved VLAN IDs, which can be configured using the vlan reserved command.
interface interface-type interface-number Displays the IP packet check configuration on a specified interface. The interface is specified by the interface type and number.
  • interface-type specifies the interface type.

  • interface-number specifies the interface number.

-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

The display ip source check user-bind command displays the IP packet check configuration on an interface or in a VLAN, including IP packet check items and the alarm function of IP packet check.

Example

# Display the IP packet check configuration.

<HUAWEI> display ip source check user-bind
IPSG interface       : Eth-Trunk12
IPSG check items     : IP | MAC | VLAN 
IPSG alarm           : Enable
IPSG alarm threshold : 360

IPSG interface       : 10GE1/0/2
IPSG check items     : MAC | VLAN
IPSG alarm           : Enable
IPSG alarm threshold : 360

IPSG VLAN ID         : 10
IPSG check items     : Interface | MAC

IPSG VLAN ID         : 20
IPSG check items     : Interface | MAC
Table 16-93  Description of the display ip source check user-bind command output

Item

Description

IPSG interface

Interface that is enabled with IP packet check.

IPSG check items

IP packet check items.

An IP packet check item can contain the IP address, MAC address, VLAN ID, and interface number.

IPSG alarm

Whether the alarm function of IP packet checking is enabled.
  • Enable
  • Disable
To enable the alarm function of IP packet check, run the ip source check user-bind alarm enable command.

IPSG alarm threshold

Alarm threshold for IP packet check.To set the alarm threshold for IP packet check, run the ip source check user-bind alarm threshold command.

IPSG VLAN ID

ID of the VLAN that is enabled with IP packet check.

display ip source check user-bind statistics

Function

The display ip source check user-bind statistics command displays statistics on IP packets discarded on interfaces.

Format

display ip source check user-bind statistics [ interface interface-type interface-number ]

Parameters

Parameter Description Value
interface interface-type interface-number Displays statistics on IP packets discarded on the specified interface. If no interface is specified, statistics on IP packets discarded on all interfaces are displayed.
  • interface-type specifies the interface type.

  • interface-number specifies the interface number.

-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

After the IPSG function is configured, you can run this command to view statistics on IP packets discarded on interfaces.

Example

# View statistics on IP packets discarded on all interfaces.
<HUAWEI> display ip source check user-bind statistics
--------------------------------------------------------------------------------
Interface           IPSG Drop Alarm    Discarded           Discarded After Alarm
                                       (packets)           (packets)
--------------------------------------------------------------------------------
10GE1/0/1           Enable             400                 100
10GE1/0/2           Disable            0                   --
--------------------------------------------------------------------------------
# View statistics on IP packets discarded on 10GE1/0/1.
<HUAWEI> display ip source check user-bind statistics interface 10ge 1/0/1
IPSG Drop Alarm                       : Enable
Discarded IP Packets                  : 400
Discarded IP Packets After Drop Alarm : 100
Table 16-94  Description of the display ip source check user-bind statistics command output

Item

Description

Interface

Interface with IPSG enabled.

IPSG Drop Alarm

Whether the IPSG alarm is enabled.
  • Enable: IPSG alarm is enabled.
  • Disable: IPSG alarm is disabled.
The IPSG alarm is configured by using the ip source check user-bind alarm enable command.

Discarded IP Packets

Discarded(packets)

Number of discarded IP packets.

Discarded IP Packets After Drop Alarm

Discarded After Alarm(packets)

Number of IP packets discarded since the last alarm is reported.

display ip source check user-bind status

Function

The display ip source check user-bind status command displays the IPSG binding entries and IPSG status.

Format

display ip source check user-bind status [ dynamic | static ] [ { interface interface-type interface-number | ip-address ip-address | mac-address mac-address | vlan vlan-id } * ] [ valid | invalid ] [ slot slot-id ]

Parameters

Parameter

Description

Value

dynamic

Displays dynamic IPSG binding entries.

-

static

Displays static IPSG binding entries.

-

interface interface-type interface-number

Displays binding entries mapping on the specified interface.

  • interface-type specifies the interface type.

  • interface-number specifies the interface number.

-

ip-address ip-address

Displays binding entries mapping a specified IP address.

The value is in dotted decimal notation.

mac-address mac-address

Displays binding entries mapping a specified MAC address.

The value is in the format of H-H-H, in which H is a hexadecimal number of 4 digits.

vlan vlan-id

Displays binding entries mapping a specified VLAN ID.

The value is an integer that ranges from 1 to 4094, except reserved VLAN IDs, which can be configured using the vlan reserved command.

valid

Displays valid IPSG entries.

-

invalid

Displays invalid IPSG entries.

-

slot slot-id

Displays the IPSG status on a specified board.

-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

By using this command, you can view the IPSG binding entries generated on the device and IPSG status. IPSG binding entries include static entries and dynamic entries:
  • Dynamic entries are automatically generated by the system based on the DHCP snooping binding table after IPSG is enabled.
  • Static entries are manually configured by using the user-bind static command.

Example

# Display information about the dynamic binding table.

<HUAWEI> display ip source check user-bind status dynamic
DHCP Dynamic Bind-table:
Flags:O - outer vlan ,I - inner vlan ,P - map vlan
--------------------------------------------------------------------------------
IP Address       MAC Address     VSI/VLAN(O/I/P) Interface      Status  Slot    
--------------------------------------------------------------------------------
10.8.8.8         0008-0008-0008  2000/--  /--    10GE1/0/48     valid   1       
10.8.8.18        0008-0008-0018  2000/--  /--    10GE1/0/48     valid   1       
10.8.8.28        0008-0008-0028  2000/--  /--    10GE1/0/48     valid   1       
10.8.8.38        0008-0008-0038  2000/--  /--    10GE1/0/48     valid   1       
10.8.8.48        0008-0008-0048  2000/--  /--    10GE1/0/48     valid   1       
--------------------------------------------------------------------------------
Print count:            5         Total count:           5 

# Display information about the static binding table.

<HUAWEI> display ip source check user-bind status static
DHCP Static Bind-table:
Flags:O - outer vlan ,I - inner vlan ,P - map vlan
--------------------------------------------------------------------------------
IP Address       MAC Address     VSI/VLAN(O/I/P) Interface      Status  Slot    
--------------------------------------------------------------------------------
--               0006-0001-0001   2000/--  /--   10GE1/0/48     valid   1       
--------------------------------------------------------------------------------
Print count:           1          Total count:           1

# Display information about all binding entries.

<HUAWEI> display ip source check user-bind status
DHCP Bind-table:
Flags:O - outer vlan ,I - inner vlan ,P - map vlan
--------------------------------------------------------------------------------
IP Address       MAC Address     VSI/VLAN(O/I/P) Interface      Status  Slot    
--------------------------------------------------------------------------------
--               0006-0001-0001  2000/--  /--    10GE1/0/48     valid   1       
10.8.8.8         0008-0008-0008  2000/--  /--    10GE1/0/48     valid   1       
10.8.8.18        0008-0008-0018  2000/--  /--    10GE1/0/48     valid   1       
10.8.8.28        0008-0008-0028  2000/--  /--    10GE1/0/48     valid   1       
10.8.8.38        0008-0008-0038  2000/--  /--    10GE1/0/48     valid   1       
10.8.8.48        0008-0008-0048  2000/--  /--    10GE1/0/48     valid   1       
--------------------------------------------------------------------------------
Print count:            6         Total count:           6 
Table 16-95  Description of the display ip source check user-bind status command output

Item

Description

Flags

VLAN ID.
  • O: Outer VLAN
  • I: Inner VLAN
  • P: VLAN after mapping

IP Address

User IP address.

MAC Address

User MAC address.

VSI

Name of the VPN instance that the online user belongs to.

VLAN(O/I/P)

ID of the VLAN that the user belongs to.

Interface

User access interface.

Status

IPSG status:
  • valid
  • invalid

Slot

The specified slot.

display snmp-agent trap feature-name ipsg all

Function

The display snmp-agent trap feature-name ipsg all command displays the status of all trap messages about the IP source guard module.

Format

display snmp-agent trap feature-name ipsg all

Parameters

None

Views

All views

Default Level

3: Management level

Usage Guidelines

You can run the display snmp-agent trap feature-name ipsg all command to view the status of all trap messages about the IP source guard module.

Example

# Display the status of all trap messages about the IP source guard module.

<HUAWEI> display snmp-agent trap feature-name ipsg all
------------------------------------------------------------------------------  
Feature name: IPSG                                                              
Trap number : 1                                                                 
------------------------------------------------------------------------------  
Trap name                      Default switch status   Current switch status    
hwIpsgDropALarm                off                     on                       
Table 16-96  Description of the display snmp-agent trap feature-name ipsg all command output

Item

Description

Feature name

Name of the module to which a trap message belongs.

Trap number

Number of trap messages.

Trap name

Name of a trap message. The IP source guard module supports the following trap messages:

  • hwIpsgDropALarm: enables the trap function when the number of discarded IP packets matching no IPSG binding entries exceeds the trap threshold.

Default switch status

Status of the default trap switch:
  • on: indicates that the trap function is enabled.
  • off: indicates that the trap function is disabled.

Current switch status

Status of the current trap switch:
  • on: indicates that the trap function is enabled.
  • off: indicates that the trap function is disabled.

ip source check user-bind alarm enable

Function

The ip source check user-bind alarm enable command enables the alarm function of IP packet check.

The undo ip source check user-bind alarm enable command disables the alarm function of IP packet check.

By default, the alarm function of IP packet check is disabled.

Format

ip source check user-bind alarm enable

undo ip source check user-bind alarm enable

Parameters

None

Views

GE interface view, 10GE interface view, 25GE interface view, 40GE interface view, 100GE interface view, port group view, Eth-Trunk interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

The ip source check user-bind alarm enable command enables the alarm function for IP packet check. If the number of discarded packets reaches the threshold, the device sends an alarm to the NMS device.

Prerequisites

IP packet check has been enabled using the ip source check user-bind enable command.

Follow-up Procedure

Run the ip source check user-bind alarm threshold command to set the alarm threshold.

Example

# Enable the alarm function for IP packet check on 10GE1/0/1.

<HUAWEI> system-view
[~HUAWEI] interface 10ge 1/0/1
[~HUAWEI-10GE1/0/1] ip source check user-bind enable
[*HUAWEI-10GE1/0/1] ip source check user-bind alarm enable

ip source check user-bind alarm threshold

Function

The ip source check user-bind alarm threshold command sets the alarm threshold for IP packet check.

The undo ip source check user-bind alarm threshold command restores the default alarm threshold for IP packet check.

By default, the alarm threshold is 100.

Format

ip source check user-bind alarm threshold threshold

undo ip source check user-bind alarm threshold

Parameters

Parameter Description Value
threshold Specifies an alarm threshold for IP packet check. The value is an integer that ranges from 1 to 1000.

Views

GE interface view, 10GE interface view, 25GE interface view, 40GE interface view, 100GE interface view, port group view, Eth-Trunk interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

After the alarm function of IP packet check is enabled, run the ip source check user-bind alarm threshold command to set the alarm threshold for IP packet check.

Prerequisites

The alarm function of IP packet check has been enabled using the ip source check user-bind alarm enable command.

Example

# Set the alarm threshold for IP packet check to 200 on 10GE1/0/1.

<HUAWEI> system-view
[~HUAWEI] interface 10ge 1/0/1
[~HUAWEI-10GE1/0/1] ip source check user-bind enable
[*HUAWEI-10GE1/0/1] ip source check user-bind alarm enable
[*HUAWEI-10GE1/0/1] ip source check user-bind alarm threshold 200

ip source check user-bind check-item (interface view)

Function

The ip source check user-bind check-item command configures IP packet check items on an interface.

The undo ip source check user-bind check-item command restores the default IP packet check items.

By default, the check items contain the IP address, MAC address, VLAN and interface information..

Format

ip source check user-bind check-item { ip-address | mac-address | vlan } *

undo ip source check user-bind check-item

Parameters

Parameter Description Value
ip-address Checks whether the IP address of an IP packet matches a binding entry. -
mac-address Checks whether the MAC address of an IP packet matches a binding entry. -
vlan Checks whether VLAN information of an IP packet matches a binding entry. -

Views

GE interface view, 10GE interface view, 25GE interface view, 40GE interface view, 100GE interface view, port group view, Eth-Trunk interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When you check an IP packet against the binding table, run the ip source check user-bind check-item (interface view) command to specify items in the IP packet to be checked on a specified interface. When the device receives an IP packet, it checks the items against the binding table. Only packets that match the binding entries can be forwarded; otherwise, packets are discarded. The optional check items of an IP packet contain the source IP address, source MAC address, and VLAN information. Interface information is a mandatory check item.

Prerequisites

IP packet check has been enabled using the ip source check user-bind enable command in the interface view.

Precautions

When a large number of binding entries exist, it may take a long time to check IP packets, reducing forwarding efficiency.

This command is valid only for dynamic binding entries. The device checks the received packets against entries in the static binding table.

Example

# Enable IP packet check on 10GE1/0/1 to check whether the IP address in the IP packet matches the binding entry.
<HUAWEI> system-view
[~HUAWEI] interface 10ge 1/0/1
[~HUAWEI-10GE1/0/1] ip source check user-bind enable
[*HUAWEI-10GE1/0/1] ip source check user-bind check-item ip-address

ip source check user-bind check-item (VLAN view)

Function

The ip source check user-bind check-item command configures IP packet check items in a VLAN.

The undo ip source check user-bind check-item command restores the default IP packet check items in a VLAN.

By default, the check items contain the IP address, MAC address, VLAN and interface information.

Format

ip source check user-bind check-item { ip-address | mac-address | interface } *

undo ip source check user-bind check-item

Parameters

Parameter Description Value
ip-address Checks whether the IP address of an IP packet matches a binding entry. -
mac-address Checks whether the MAC address of an IP packet matches a binding entry. -
interface Checks whether interface information of an IP packet matches a binding entry. -

Views

VLAN view, VLAN-Range view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When you check an IP packet against the binding table, run the ip source check user-bind check-item (VLAN view) command to configure IP packet check items in a specified VLAN. When the device receives an IP packet, it checks the items against the binding table. Only packets that match the binding entries can be forwarded; otherwise, packets are discarded. The optional check items of an IP packet contain the source IP address, source MAC address, and interface information. VLAN information is a mandatory check item.

Prerequisites

IP packet check has been enabled using the ip source check user-bind enable command in the VLAN view.

Precautions

When a large number of binding entries exist, it may take a long time to check IP packets, reducing forwarding efficiency.

This command is valid only for dynamic binding entries. The device checks the received packets against entries in the static binding table.

Example

# Enable IP packet check in VLAN 100 and check whether the IP address in the IP packet matches the binding entry.

<HUAWEI> system-view
[~HUAWEI] vlan 100
[*HUAWEI-vlan100] ip source check user-bind enable
[*HUAWEI-vlan100] ip source check user-bind check-item ip-address

ip source check user-bind enable

Function

The ip source check user-bind enable command enables IP packet check.

The undo ip source check user-bind enable command disables IP packet check.

By default, IP packet check is disabled.

Format

ip source check user-bind enable

undo ip source check user-bind enable

Parameters

None

Views

GE interface view, 10GE interface view, 25GE interface view, 40GE interface view, 100GE interface view, port group view, Eth-Trunk interface view, VLAN view, VLAN-Range view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

Unauthorized users often send bogus packets with the source IP address and MAC address of authorized users to access or attack the network. Then authorized users cannot access stable and secure networks. To address this problem, you can configure IP packet check.

When IP packet check is enabled, the device checks the IP address, MAC address, VLAN information, and interface information against the binding table. You can run the ip source check user-bind check-item (interface view) or ip source check user-bind check-item (VLAN view) command to specify IP packet check items. Only packets that match the binding entries can be forwarded; otherwise, packets are discarded.

Prerequisites

The IP packet check is based by binding table. So,
  • The dynamic DHCP snooping binding table has been generated for DHCP users.
  • The static binding table has been configured manually for users using static IP addresses.

Precautions

The ip source check user-bind enable command and the dhcp snooping sticky-mac command cannot be used simultaneously.

Example

# Enable IP packet check on 10GE1/0/1.

<HUAWEI> system-view
[~HUAWEI] interface 10ge 1/0/1
[~HUAWEI-10GE1/0/1] ip source check user-bind enable

reset ip source check user-bind statistics

Function

The reset ip source check user-bind statistics command clears statistics on IP packets discarded on interfaces.

Format

reset ip source check user-bind statistics [ interface interface-type interface-number ]

Parameters

Parameter Description Value
interface interface-type interface-number
Clears statistics on IP packets discarded on the specified interface. If no interface is specified, statistics on IP packets discarded on all interfaces are cleared.
  • interface-type specifies the interface type.
  • interface-number specifies the interface number.
-

Views

User view

Default Level

3: Management level

Usage Guidelines

Usage Scenario

During routine maintenance, to view statistics on IP packets discarded within a period, clear historical statistics so that the device recollects statistics.

Precautions

The cleared statistics cannot be restored. Exercise caution when you run the following command.

Example

# Clear statistics on IP packets discarded on all interfaces.

<HUAWEI> reset ip source check user-bind statistics

# Clear statistics on IP packets discarded on 10GE1/0/1.

<HUAWEI> reset ip source check user-bind statistics interface 10ge 1/0/1

snmp-agent trap enable feature-name ipsg

Function

The snmp-agent trap enable feature-name ipsg command enables the trap function for the IP source guard module.

The undo snmp-agent trap enable feature-name ipsg command disables the trap function for the IP source guard module.

By default, the trap function is disabled for the IP source guard module.

Format

snmp-agent trap enable feature-name ipsg [ trap-name hwipsgdropalarm ]

undo snmp-agent trap enable feature-name ipsg [ trap-name hwipsgdropalarm ]

Parameters

Parameter Description Value
trap-name

Enables the trap function for the specified event.

-
hwipsgdropalarm

Enables the trap function when the number of discarded IP packets matching no IPSG binding entries exceeds the trap threshold.

-

Views

System view

Default Level

3: Management level

Usage Guidelines

You can run the snmp-agent trap enable feature-name ipsg command to enable the trap function for the IP source guard module.

Example

# Enable the trap function when the number of discarded IP packets matching no IPSG binding entries exceeds the trap threshold.

<HUAWEI> system-view
[~HUAWEI] snmp-agent trap enable feature-name ipsg trap-name hwipsgdropalarm

user-bind static

Function

The user-bind static command configures a static binding table.

The undo user-bind static command deletes a static binding table.

By default, no static binding table is configured.

Format

user-bind static { ip-address { start-ip [ to end-ip ] } &<1-10> | mac-address mac-address } * [ interface interface-type interface-number ] [ vlan vlan-id [ inner-vlan inner-vlan-id ] ]

undo user-bind static [ interface interface-type interface-number | ip-address { start-ip [ to end-ip ] } &<1-10> | mac-address mac-address | vlan vlan-id [ inner-vlan inner-vlan-id ] ] *

Parameters

Parameter Description Value
interface interface-type interface-number Specifies the interface connected to a user in a static binding entry.
  • interface-type specifies the interface type.
  • interface-number specifies the interface number.

-

ip-address Indicates the static IPv4 address. -
start-ip [ to end-ip ] Specifies the user IP address in a static binding entry.
  • start-ip specifies the first IP address.
  • to end-ip specifies the last IP address. The value of end-ip must be larger than the value of start-ip. start-ip and end-ip identify a VLAN range.

If to end-ip is not specified, only the start IP address is added to the static binding entry.

You can specify a maximum of 10 VLAN ranges at a time. The entered VLAN ranges cannot overlap.

The IPv4 address is in dotted decimal notation in the format of X.X.X.X.
mac-address mac-address Specifies the user MAC address in a static binding entry. The value is in hexadecimal notation.

The value is in the format of H-H-H.

vlan vlan-id Specifies the user VLAN ID in a static binding entry. The value is an integer that ranges from 1 to 4094, except reserved VLAN IDs, which can be configured using the vlan reserved command.
inner-vlan inner-vlan-id Specifies the inner VLAN tag of a QinQ packet in a static binding entry. The value is an integer that ranges from 1 to 4094, except reserved VLAN IDs, which can be configured using the vlan reserved command.

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When DHCP snooping is enabled, a dynamic binding table is automatically generated for dynamic users. However, a static binding table cannot be generated for static users. If IP source guard is enabled but no static binding table is available, the device discards all static users' forwarding packets. To enable the device to forward static users' packets, run the user-bind static command to configure a static binding table.

Precautions

After a static binding table is configured and IP source guard is enabled, the device performs a match check on IP packets based on the configured binding entries. If the match check fails, the device discards the IP packets.

Example

# Configure a static binding entry for a user in VLAN 2 with the IP address 10.1.1.1.

<HUAWEI> system-view
[~HUAWEI] user-bind static ip-address 10.1.1.1 vlan 2
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Updated: 2019-03-21

Document ID: EDOC1000166501

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