l If both the interface index and backup group ID are specified, the state information about the specified backup group on the interface is displayed.

When VRRP statistics information is displayed:

l If the interface index and backup group ID are not specified, the statistics about all the backup groups on the switch are displayed.

l If only the interface index is specified, the statistics about all the backup groups on the interface are displayed.

l If both the interface index and backup group ID are specified, the statistics about the specified backup group on the interface are displayed.

Examples

# Display the statistics about all the backup groups on the switch.

<H3C> display vrrp statistics

Interface : Vlan-interface10

VRID : 1

CheckSum Errors : 0 Version Errors : 0

VRID Errors : 0 Advertisement Interval Errors : 0

IP TTL Errors : 0 Auth Failures : 0

Invalid Auth Type : 0 Auth Type Mismatch : 0

Packet Length Errors : 0 Address List Errors : 0

Become Master : 2 Priority Zero Pkts Rcvd : 0

Advertise Rcvd : 0 Priority Zero Pkts Sent : 1

Invalid Type Pkts Rcvd : 0

Table 1-1 Description on the fields of the display vrrp statistics command

Field	Description
Interface	Interface in which the backup group resides
VRID	Backup group ID
CheckSum Errors	Number of checksum errors
Version Errors	Number of version errors
VRID Errors	Number of backup group ID errors
Advertisement Interval Errors	Number of advertisement interval errors
IP TTL Errors	Number of TTL errors
Auth Failures	Number of authentication errors
Invalid Auth Type	Number of invalid authentication types
Auth Type Mismatch	Number of mismatched authentication types
Packet Length Errors	Number of VRRP packet length errors
Address List Errors	Number of the virtual IP address list errors
Become Master	Number of the occasions where the switch operates as the master
Priority Zero Pkts Rcvd	Number of the received advertisement packets with the priority of 0
Advertise Rcvd	Number of the received advertisement packets
Priority Zero Pkts Sent	Number of the sent advertisement packets with the priority of 0
Invalid Type Pkts Rcvd	Number of packet type errors

1.1.2 reset vrrp statistics

Syntax

reset vrrp statistics [ vlan-interface vlan-id ] [ virtual-router-id ]

View

User view

Parameters

vlan-id: VLAN interface ID.

virtual-router-id: VRRP virtual router ID, ranging from 1 to 255.

Description

Use the reset vrrp command to clear the statistics information about VRRP.

When you execute this command,

l If the interface index and backup group ID are not specified, the statistics information about all the backup groups on the switch is cleared.

l If only the interface index is specified, the statistics information about all the backup groups on the interface will be cleared.

l If both the interface index and backup group ID are specified, the statistics information about the specified backup group on the interface is cleared.

Examples

# Clear the VRRP statistics on the switch.

<H3C> reset vrrp statistics

1.1.3 vrrp authentication-mode

Syntax

vrrp authentication-mode authentication-type authentication-key

undo vrrp authentication-mode

View

VLAN interface view

Parameters

authentication-type: Authentication type, which can be:

l simple: Indicates to perform simple character authentication.

l md5: Indicates to perform the authentication with MD5 algorithm.

authentication-key: Authentication key. When you specify authentication-type as simple, the authentication key can contain up to eight characters. When you specify authentication-type as md5, the authentication key can be a string comprising up to eight characters in plain text or a 24-character encrypted string.

Description

Use the vrrp authentication-mode command to specify the authentication type and the authentication key for a VRRP backup group.

Use the undo vrrp authentication-mode command to clear the configured authentication type and authentication key.

If the simple or md5 authentication is configured, the authentication key is required.

This command sets the authentication type and authentication key for all the VRRP backup groups on an interface. As defined in the protocol, all the backup groups on an interface share the same authentication type and authentication key. And all the members joining the same backup group also share the same authentication type and authentication key.

Note that the authentication key is case-sensitive.

Examples

# Specify the authentication type as simple, and authentication key as aabbcc.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface Vlan-interface 2

[H3C-Vlan-interface2] vrrp authentication-mode simple aabbcc

1.1.4 vrrp method

Syntax

vrrp method { real-mac | virtual-mac }

undo vrrp method

View

System view

Parameters

real-mac: Maps the real MAC address of a Layer 3 switch routing interface to virtual router IP addresses.

virtual-mac: Maps the virtual MAC address to virtual router IP addresses of backup groups.

Description

Use the vrrp method command to map the MAC address of a backup group to the virtual router IP addresses. You can map the actual or virtual MAC address of a Layer 3 switch routing interface to virtual router IP addresses.

Use the undo vrrp method command to restore the default mapping settings.

By default, the virtual MAC address of a backup group is mapped to the IP address of the virtual router.

Note that as the mapping relationship between the MAC addresses of a backup group and a virtual router IP address cannot be configured after the backup group is created, configure the mapping relationship before you create a backup group.

& Note:

Due to the chips installed, when you map the virtual IP addresses to the virtual MAC addresses, the chip type decides the number of backup groups that can be configured on a VLAN interface. Refer to device specification for details.

Examples

# Map the real MAC address of a routing interface to a virtual router IP address.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] vrrp method real-mac

1.1.5 vrrp ping-enable

Syntax

vrrp ping-enable

undo vrrp ping-enable

View

System view

Parameters

None

Description

Use the vrrp ping-enable command to enable a backup group to respond to ping operations destined for its virtual router IP address.

Use the undo vrrp ping-enable command to revert to the default.

By default, a backup group does not respond to ping operations destined for its virtual router IP address.

As these two commands are invalid to switches in backup groups, use them before you create a backup group.

Examples

# Enable a backup group to respond to ping operations destined for its virtual router IP address.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] vrrp ping-enable

1.1.6 vrrp vrid preempt-mode

Syntax

vrrp vrid virtual-router-id preempt-mode [ timer delay delay-value ]

undo vrrp vrid virtual-router-id preempt-mode

View

VLAN interface view

Parameters

virtual-router-id: VRRP backup group ID, ranging from 1 to 255.

delay-value: Delay period (in seconds), ranging from 0 to 255.

Description

Use the vrrp vrid preempt-mode command to configure a switch to operate in the preemptive mode and set the delay period.

Use the undo vrrp vrid preempt-mode command to cancel the configuration.

By default, switches in a backup group operate in the preemptive mode, with the delay period set to 0 seconds.

If you want backup switches to preempt the master switch, configure them to operate in the preemptive mode. You can also set the delay period for preemption as needed.

As long as a switch in the backup group becomes the master switch, other switches, even if they are configured with a higher priority later, do not preempt the master switch unless they operate in preemptive mode. The switch operating in preemptive mode will become the master switch when it finds its priority is higher than that of the current master switch, and the former master switch becomes a backup switch accordingly.

You can configure an S7500 series switch to operate in preemptive mode. You can also set the delay period. A backup switch waits for a period of time (the delay period) before becoming a master switch. Setting a delay period aims at:

In an unstable network, backup switches in a backup group possibly cannot receive packets from the master in time due to network congestions even if the master operates properly. This causes the master of the backup group being determined frequently. With the configuration of delay period, the backup switch will wait for a while if it does not receive packets from the master switch in time. A new master is determined only after the backup switches do not receive packets from the master switch after the specified delay time.

& Note:

You can use the undo vrrp vrid preempt-mode command to set switches in a backup group to operate in non-preemptive mode.

Examples

# Configure the switches to operate in the preemptive mode.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface Vlan-interface 2

[H3C-Vlan-interface2] vrrp vrid 1 preempt-mode

# Set the delay period.

[H3C-Vlan-interface2] vrrp vrid 1 preempt-mode timer delay 5

# Configure the switches to operate in non-preemptive mode.

[H3C-Vlan-interface2] undo vrrp vrid 1 preempt-mode

1.1.7 vrrp vrid priority

Syntax

vrrp vrid virtual-router-id priority priority

undo vrrp vrid virtual-router-id priority

View

VLAN interface view

Parameters

virtual-router-id: VRRP backup group ID, ranging from 1 to 255.

priority: Switch priority to be set. This argument ranges from 1 to 254.

Description

Use the vrrp vrid priority command to set the priority of a switch in a backup group.

Use the undo vrrp vrid priority command to revert to the default priority.

By default, the priority of a switch in a backup group is 100.

Switch priority determines the possibility for the switch to become a master switch. A switch with larger priority is more likely to become a master switch. Note that the priority of 0 is reserved for special use, and the priority of 255 is for IP address owners. That is, the priority of a switch that owns a virtual router IP address is fixed to 255 and cannot be modified.

Examples

# Set the priority to 120 for a switch in the backup group.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface Vlan-interface 2

[H3C-Vlan-interface2] vrrp vrid 1 priority 120

1.1.8 vrrp vrid timer advertise

Syntax

vrrp vrid virtual-router-id timer advertise adver-interval

undo vrrp vrid virtual-router-id timer advertise

View

VLAN interface view

Parameters

virtual-router-id: VRRP backup group ID, ranging from 1 to 255.

adver-interval: Interval (in seconds) for the master switch of a backup group to send VRRP packets. This argument ranges from 1 to 255.

Description

Use the vrrp vrid timer advertise command to set the interval for the master switch of a backup group to send VRRP packets.

Use the undo vrrp vrid timer advertise command to revert to the default interval.

Note that configuration error occurs if switches of the same backup group are configured with different adver-interval values.

By default, the interval for the master switch in a backup group to send VRRP packets is 1 second.

Examples

# Set the interval for the master switch to send VRRP packets to 15 seconds.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface Vlan-interface 2

[H3C-Vlan-interface2] vrrp vrid 1 timer advertise 15

1.1.9 vrrp vrid track

Syntax

vrrp vrid virtual-router-id track interface-type interface-number [ reduced value-reduced ]

undo vrrp vrid virtual-router-id track [ interface-type interface-number ]

View

VLAN interface view

Parameters

virtual-router-id: VRRP backup group ID, ranging form 1 to 255.

Interface-type interface-number: VLAN interface to be tracked.

value-reduced: Value by which the priority is to decrease. This argument ranges from 1 to 255.

Description

Use the vrrp vrid track command to set a VLAN interface/Ethernet port to be tracked.

Use the undo vrrp vrid track command to disable a VLAN interface/Ethernet port from being tracked.

By default, the value by which the priority of the VLAN interface decreases is 10.

The VLAN interface/Ethernet port tracking function extends the use of the backup function. With this function enabled, the backup function is provided not only when the interface where the backup group resides fails, but also when other interfaces/Ethernet ports are unavailable. By executing the related command, you can track an interface/Ethernet port.

When a tracked VLAN interface/Ethernet port goes down, the priority of the switch owning the interface/port will reduce automatically by a specified value (the value-reduced argument). If the switches with their priorities higher than that of the current master switch exist in the backup group, a new master switch will be then determined.

& Note:

l The Ethernet port tracked can be in or out of the VLAN in whose interface the backup group resides.

l If a switch is the IP address owner, the VLAN interface/Ethernet port tracking function can not be enabled for the switch.

l If a tracked VLAN interface/Ethernet port goes down, when it is up again, the priority of the corresponding switch is automatically restored.

l Each backup group can track up to eight VLAN interfaces/Ethernet ports.

Examples

# Configure VLAN 2 interface to track VLAN 1 interface and specify the priority of the master switch of backup group 1 (on VLAN 2 interface) decreases by 50 when VLAN 1 interface goes down.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface Vlan-interface 2

[H3C-Vlan-interface2] vrrp vrid 1 track vlan-interface 1 reduced 50

1.1.10 vrrp vrid virtual-ip

Syntax

vrrp vrid virtual-router-id virtual-ip virtual-address

undo vrrp vrid virtual-router-id [ virtual-ip virtual-address ]

View

VLAN interface view

Parameters

virtual-router-id: VRRP backup group ID, ranging from 1 to 255.

virtual-address: Virtual router IP address to be configured.

Description

Use the vrrp vrid virtual-ip command to add a virtual router IP address to an existing backup group.

Use the undo vrrp vrid virtual-ip command to remove a virtual router IP address from an existing backup group.

The vrrp vrid virtual-ip command can also be used to create a backup group. You can add up to 16 virtual router IP addresses to a backup group. The undo vrrp vrid virtual-ip command can also be used to remove an existing backup group. A backup group is removed if all the virtual router IP addresses configured for it are removed.

Note that the virtual router IP address and the IP addresses used by the member switches in a backup group must belong to the same network segment. If not, the backup group will be in the initial state (the state before you configure the VRRP for the switches). In this case, VRRP does not take effect.

Examples

# Create a backup group.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface Vlan-interface 2

[H3C-Vlan-interface2] vrrp vrid 1 virtual-ip 10.10.10.10

# Add a virtual router IP address to an existing backup group.

[H3C-Vlan-interface2] vrrp vrid 1 virtual-ip 10.10.10.11

# Remove a virtual router IP address from a backup group.

[H3C-Vlan-interface2] undo vrrp vrid 1 virtual-ip 10.10.10.10

# Remove a backup group.

[H3C-Vlan-interface2] undo vrrp vrid 1

Chapter 2 HA Configuration Commands

2.1 HA Configuration Commands

2.1.1 display switchover state

Syntax

display switchover state [ slot-id ]

View

Any view

Parameters

slot-id: Slot number of master/slave board.

Description

Use the display switchover state command to display the backup status of master/slave board.

This command displays the backup state of master/slave board according to the specified slot number. If the slot-id is not specified, the status of master board will be displayed.

Examples

# Display the status of master board.

<H3C> display switchover state

HA FSM State(master): Slave is absent.

2.1.2 slave auto-update config

Syntax

slave auto-update config

undo slave auto-update config

View

System view

Parameters

None

Description

Use slave auto-update config command to enable the automatic synchronization of configuration files between the master/slave systems.

Use the undo slave auto-update config command to disable the automatic synchronization.

By default, the automatic synchronization of configuration files between the master and slave system is enabled.

Related commands: slave update configuration.

Examples

# Enable automatic synchronization between master/slave systems.

<H3C>system-view

System View: return to User View with Ctrl+Z.

[H3C] slave auto-update config

2.1.3 slave restart

Syntax

slave restart

View

User view

Parameters

None

Description

Use the slave restart command to restart the slave board.

When the application of the backup system operates abnormally and requires for reloading the applications, you can use this command to restart the slave board.

Examples

# Restart the slave board.

<H3C> slave restart

The slave will reset! Continue?[Y/N]:y

2.1.4 slave switchover

Syntax

slave switchover

View

User view

Parameters

None

Description

Use the slave switchover command to perform master/slave switchover manually.

When the slave board operates normally and the master board is in the real-time backup state, if you want the slave board to operate in place of the master board, you can use this command to implement master/slave switchover. After that, the slave board becomes the new master board and controls the system, and the original master board restarts automatically.

Examples

# Perform master/slave switchover manually.

<H3C> slave switchover

Caution!!! Confirm switch slave to master[Y/N]?y

Starting.....

RAM Line....OK

2.1.5 slave update configuration

Syntax

slave update configuration

View

User view

Parameters

None

Description

Use the slave update configuration command to synchronise the configurations files on master/slave board.

You can use this command to manually synchronize the configuration files on the master board to the slave board.

Examples

# Synchronize the configuration files on the master board to the slave board.

<H3C> slave update configuration

Now saving the current configuration to the slave board.

Please wait...

The configuration has been saved to the slave board successfully.

H3C S7500 Series Command Manual(Release 3100 Series)-(V1.04)

Chapter 1 VRRP Configuration Commands

1.1 VRRP Configuration Commands

1.1.1 display vrrp

1.1.2 reset vrrp statistics

1.1.3 vrrp authentication-mode

1.1.4 vrrp method

1.1.5 vrrp ping-enable

1.1.6 vrrp vrid preempt-mode

1.1.7 vrrp vrid priority

1.1.8 vrrp vrid timer advertise

1.1.9 vrrp vrid track

1.1.10 vrrp vrid virtual-ip

Chapter 2 HA Configuration Commands

2.1 HA Configuration Commands

2.1.1 display switchover state

2.1.2 slave auto-update config

2.1.3 slave restart

2.1.4 slave switchover

2.1.5 slave update configuration

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