HP 6125G Installation manual

HP 6125 Blade Switch Series
IRF
Command Reference
Part number: 5998-3165
Software version: Release 2103
Document version: 6W100-20120907

Legal and notice information
© Copyright 2012 Hewlett-Packard Development Company, L.P.
No part of this documentation may be reproduced or transmitted in any form or by any means without
prior written consent of Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice.
HEWLETT-PACKARD COMPANY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS
MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE. Hewlett-Packard shall not be liable for errors contained
herein or for incidental or consequential damages in connection with the furnishing, performance, or
use of this material.
The only warranties for HP products and services are set forth in the express warranty statements
accompanying such products and services. Nothing herein should be construed as constituting an
additional warranty. HP shall not be liable for technical or editorial errors or omissions contained
herein.

i
Contents
IRF configuration commands ······································································································································· 1
display irf ··································································································································································1
display irf configuration···········································································································································2
display irf topology ··················································································································································3
display mad ······························································································································································4
display switchover state···········································································································································6
irf auto-update enable··············································································································································7
irf domain··································································································································································8
irf link-delay·······························································································································································9
irf mac-address persistent ········································································································································9
irf member description·········································································································································· 10
irf member priority················································································································································· 11
irf member renumber············································································································································· 12
irf switch-to ····························································································································································· 13
irf-port ····································································································································································· 14
irf-port-configuration active··································································································································· 14
mad arp enable····················································································································································· 16
mad bfd enable····················································································································································· 17
mad enable···························································································································································· 18
mad exclude interface ·········································································································································· 18
mad ip address······················································································································································ 19
mad restore ···························································································································································· 20
port group interface ·············································································································································· 21
Support and other resources ·····································································································································23
Contacting HP ································································································································································ 23
Subscription service ·············································································································································· 23
Related information························································································································································ 23
Documents······························································································································································ 23
Websites································································································································································· 23
Conventions ···································································································································································· 24
Index ···········································································································································································26

1
IRF configuration commands
display irf
Syntax
display irf [ |{ begin | exclude | include } regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use display irf to display IRF fabric information, including the member ID, role, priority, bridge MAC
address, and description of each IRF member.
Examples
# Display IRF fabric information.
<Sysname> display irf
Switch Role Priority CPU-Mac Description
1 Slave 1 000f-e2be-3102 F1Num001
*+2 Master 1 000f-e2b1-ade2 F1Num002
--------------------------------------------------------
* indicates the device is the master.
+ indicates the device through which the user logs in.
The Bridge MAC of the IRF is: 000f-e2b1-ade1
Auto upgrade : yes
Mac persistent : always
Domain ID : 30

2
Table 1 Command output
Field Descri
p
tion
Switch
IRF member ID:
•ID of the master is prefixed with an asterisk (*) sign.
•ID of the device where you have been logged in is prefixed with a plus (+) sign.
Role
Switch role in the IRF fabric:
•Slave—The switch is a subordinate device.
•Master—The switch is the master.
•SlaveWait—The switch is joining the IRF fabric as a subordinate device.
•Loading—The switch is loading the system software image.
CPU-MAC CPU MAC address of the switch.
Description
Description you have configured for the member device.
•If no description is configured, this field displays a dashed line (-----).
•If the description exceeds the maximum number of characters that can be
displayed, an ellipsis (…) is displayed in place of the exceeding text. To display
the complete description, use the display current-configuration command.
Auto upgrade
Status of the software auto-update function:
•yes—Enabled. The master switch automatically propagates its system software
image to the switch you are adding to the IRF fabric.
•no—Disabled. You must manually make sure the joining switch uses the same
system software image as the master switch. If not, the new switch cannot join
the IRF fabric.
MAC persistent
IRF bridge MAC persistence setting:
•6 min—Bridge MAC address of the IRF fabric persists for six minutes after the
master leaves.
•always—Bridge MAC address of the IRF fabric does not change after the master
leaves.
•no—Bridge MAC address of the new master replaces the original one as soon
as the old master leaves.
Domain ID Domain ID assigned to the IRF fabric. A domain ID uniquely identifies an IRF fabric
on a network that has multiple IRF fabrics.
display irf configuration
Syntax
display irf configuration [ |{ begin | exclude | include } regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.

3
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use display irf configuration to display the basic IRF settings.
The command displays each member's current member ID, new member ID, priority, IRF port state, and
IRF port bindings.
The new member ID takes effect after the switch reboots.
Examples
# Display the basic IRF settings.
<Sysname> display irf configuration
MemberID NewID IRF-Port1 IRF-Port2
1 1 Ten-GigabitEthernet1/1/1 disable
2 2 disable Ten-GigabitEthernet2/1/2
Table 2 Command output
Field Descri
p
tion
MemberID Current member ID.
NewID Member ID that will take effect after a reboot.
IRF-Port1 Physical port or ports bound to IRF port 1. If no physical ports are bound to the
IRF port, this field displays disable.
IRF-Port2 Physical port or ports bound to IRF port 2. If no physical ports are bound to the
IRF port, this field displays disable.
display irf topology
Syntax
display irf topology [ |{ begin | exclude | include } regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

4
Description
Use display irf topology to display the IRF fabric topology.
Command output includes member IDs, IRF port state, and adjacencies of IRF ports.
Examples
# Display the IRF fabric topology.
<Sysname> display irf topology
Topology Info
-------------------------------------------------------------------------
IRF-Port1 IRF-Port2
Switch Link neighbor Link neighbor Belong To
2 DOWN -- UP 1 0023-8927-ad54
1 UP 2 DIS -- 0023-8927-ad54
Table 3 Command output
Field Descri
p
tion
Switch Member ID.
IRF-Port 1 Link state and neighbor switch of IRF port 1.
IRF-Port 2 Link state and neighbor switch of IRF port 2.
Link
Link state of the IRF port:
•UP—IRF link is up.
•DOWN—IRF link is down.
•DIS—No physical ports have been bound to the IRF port. You must use the
port group interface command to bind at least one physical port to the IRF
port.
neighbor IRF member ID of the switch connected to the IRF port.
If no device is connected to the IRF port, this field displays two hyphens (--).
Belong To IRF fabric that has the switch, represented by the CPU MAC address of the
master in the IRF fabric.
display mad
Syntax
display mad [ verbose ] [ |{ begin | exclude | include } regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
verbose: Displays detailed MAD information. If this keyword is not provided, the system displays brief
information about the MAD detection.
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.

5
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use display mad to display MAD status and settings.
Examples
# Display brief MAD information.
<Sysname> display mad
MAD ARP disabled.
MAD LACP disabled.
MAD BFD disabled.
# Display detailed MAD information.
<Sysname> display mad verbose
Current MAD status: Detect
Excluded ports(configurable):
Vlan-interface999
Excluded ports(can not be configured):
Ten-GigabitEthernet1/0/1
MAD ARP enabled interface:
Vlan-interface2
MAD enabled aggregation port:
Bridge-Aggregation1
MAD BFD enabled interface:
Vlan-interface3
mad ip address 3.3.3.1 255.255.255.0 member 1
mad ip address 3.3.3.2 255.255.255.0 member 2
Table 4 Command output
Field Descri
p
tion
Current MAD status
MAD status:
•Detect—The IRF fabric is integrated.
•Recovery—IRF fabric is in Recovery state. When detecting a
multi-active collision, MAD places the IRF fabric with higher master ID
in Recovery state and shuts down all physical ports in the fabric but IRF
physical ports and ports that are configured to not shut down.
•Detect to Recovery—State of the IRF fabric is transitioning from Detect
to Recovery, for example, as the result of an IRF split.
•Recovery to Detect—State of the IRF fabric is transitioning from
Recovery to Detect.
Excluded ports(configurable) Ports manually configured to not shut down when the IRF fabric transitions
to the Recovery state.
Excluded ports(can not be
configured)
Ports automatically set by the system to not shut down when the IRF fabric
transitions to the Recovery state.

6
Field Descri
p
tion
MAD ARP enabled interface:
Vlan-interface2 Interface where ARP MAD is enabled.
MAD enabled aggregation port:
Bridge-Aggregation1 Aggregate interface where LACP MAD is enabled.
MAD BFD enabled interface Interface where BFD MAD is enabled.
Vlan-interface3
mad ip address 3.3.3.1
255.255.255.0 member 1
mad ip address 3.3.3.2
255.255.255.0 member 2
VLAN interface used for BFD MAD, and the MAD IP address configured
for each member on this interface.
display switchover state
Syntax
display switchover state [ slot member-id ] [ |{ begin | exclude | include } regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
slot member-id: Specifies an IRF member by its member ID. If no IRF member is specified, this command
displays the master/subordinate switchover states of the master.
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use display switchover state to display the master/subordinate switchover states of IRF member switches.
Examples
# Display the master/subordinate switchover states of the master.
<Sysname> display switchover state
Master HA State to slot 2: Slave is absent.
Master HA State to slot 3: Realtime backup to slave.
Master HA State to slot 4: Waiting batch backup request from slave.

7
Table 5 Command output for the master
Field Descri
p
tion
Master HA State to slot slot-number
Describes the master/subordinate switchover state
between the master and a specific member. The
slot-number argument represents an IRF member ID.
Slave is absent The IRF member ID is not used in this IRF fabric.
Waiting batch backup request from slave The master switch is waiting for the batch backup
request from the subordinate switch.
Batch backup The subordinate switch is bulk-backing up data from
the master.
Realtime backup to slave The subordinate switch is backing up real-time data
from the master switch.
Data smooth The subordinate switch is transitioning to be the
master.
# Display the master/subordinate switchover state of member switch 3.
<Sysname> display switchover state slot 3
Slave HA State: Receiving realtime data.
Table 6 Command output for a subordinate
Field Descri
p
tion
Slave HA State Describes the master/subordinate switchover state of the subordinate switch.
Waiting The subordinate switch is ready for bulk-backing up data.
Sending batch backup
request The subordinate switch is requesting for a bulk-backup.
Receiving batch data The subordinate switch is bulk backing up data.
Receiving realtime data The member switch is receiving real-time data.
irf auto-update enable
Syntax
irf auto-update enable
undo irf auto-update enable
View
System view
Default level
3: Manage level
Parameters
None

8
Description
Use irf auto-update enable to enable the software auto-update function for propagating the system
software image of the master to all its members.
Use undo irf auto-update enable to disable this function.
By default, software auto-update for subordinate switches is enabled.
When you add a switch to the IRF fabric, the software auto-update function compares the system software
versions of the switch and the IRF master. If the versions are different, the switch automatically downloads
the system software image from the master, sets the downloaded file as the system software for the next
reboot, and automatically reboots with the new system software image to re-join the IRF fabric.
To avoid an update failure, make sure the switch has efficient space for the new system software image.
If the switch you are adding to the IRF fabric is incompatible with the software version running on the
master, the software auto-update function cannot work correctly.
If software auto-update function is disabled, you must manually update the switch with the system
software image of the master.
Examples
# Enable the software auto-update function.
<Sysname> system-view
[Sysname] irf auto-update enable
irf domain
Syntax
irf domain domain-id
undo irf domain
View
System view
Default level
3: Manage level
Parameters
domain-id: Specifies a domain ID for the IRF fabric. The value range is 0 to 4294967295.
Description
Use irf domain to assign a domain ID to an IRF fabric.
Use undo irf domain to restore the default IRF domain ID.
The default IRF domain ID is 0.
One IRF fabric forms one IRF domain. IRF uses IRF domain IDs to uniquely identify IRF fabrics and prevent
IRF fabrics from interfering with one another.
If you use a member in one IRF fabric as the intermediate device for performing ARP MAD or LACP MAD
for another IRF fabric, assign the two IRF fabrics different domain IDs to avoid false detection of IRF split.
Examples
# Set the IRF domain ID to 30.

9
<Sysname> system-view
[Sysname] irf domain 30
irf link-delay
Syntax
irf link-delay interval
undo irf link-delay
View
System view
Default level
3: Manage level
Parameters
interval: Sets the IRF link down report delay in milliseconds. The value range is 0 to 30000. If your IRF
fabric requires a fast master/subordinate or IRF link switchover or has deployed the BFD or GR feature,
HP recommends setting the delay to zero seconds.
Description
Use irf link-delay to set the delay for the IRF ports in the IRF fabric to report a link down event.
Use undo irf link-delay to restore the default.
By default, if an IRF link changes from up to down, the IRF port immediately reports the event to the IRF
fabric.
An IRF link down report delay helps avoid link flapping causing frequent IRF splits and merges during a
short time.
An IRF port handles link down and link up events, as follows:
•When the IRF link changes from up to down, the port does not immediately report the change to the
IRF fabric. If the IRF link state is still down when the delay time is reached, the port reports the
change to the IRF fabric.
•When the IRF link changes from down to up, the link layer immediately reports the event to the IRF
fabric.
Examples
# Set the IRF link down report delay to 300 milliseconds.
<Sysname> system-view
[Sysname] irf link-delay 300
irf mac-address persistent
Syntax
irf mac-address persistent { always | timer }
undo irf mac-address persistent
View
System view

10
Default level
3: Manage level
Parameters
always: Enables the IRF bridge MAC address to persist forever regardless of master re-election or leaving
of the master.
timer: Enables the IRF bridge MAC address to remain the same for six minutes after the master device
leaves. If the device re-joins the IRF fabric before the time limit is reached, the IRF bridge MAC address
does not change. If not, the IRF fabric uses the bridge MAC address of the new master as the IRF bridge
MAC address.
Description
Use irf mac-address persistent to configure IRF bridge MAC persistence so the IRF fabric continues using
the bridge MAC address of the old master as its bridge MAC address for a period of time after a master
re-election.
Use undo irf mac-address persistent to disable IRF bridge MAC persistence so the IRF fabric changes its
bridge MAC address as soon as the master leaves.
By default, after the master device leaves, the IRF fabric continues using its bridge MAC address as the
IRF bridge MAC address for six minutes.
An IRF fabric by default uses the bridge MAC address of the master device as its bridge MAC address.
This bridge MAC address is used by Layer 2 protocols, for example, LACP, to identify the IRF fabric, and
must be unique on a switched LAN for proper communication.
To avoid duplicate bridge MAC addresses, an IRF fabric can automatically change its bridge MAC
address after its master leaves, but the change causes temporary service interruption. To avoid this
situation, configure bridge MAC persistence.
If two IRF fabrics have the same bridge MAC address, they cannot be merged into one IRF fabric.
If ARP MAD is used, you must use the undo irf mac-address persistent command disable IRF bridge MAC
persistence.
Examples
# Enable the IRF bridge MAC address to persist forever.
<Sysname> system-view
[Sysname] irf mac-address persistent always
irf member description
Syntax
irf member member-id description text
undo irf member member-id description
View
System view
Default level
3: Manage level
Parameters
member-id: Specifies the ID of an IRF member.

11
text: Configures the IRF member description, a string of 1 to 127 characters.
Description
Use irf member description to configure a description for an IRF member.
Use undo irf member description to restore the default.
By default, no description is configured for any IRF member.
Examples
# Configure a description for IRF member 1.
<Sysname> system-view
[Sysname] irf member 1 description F1Num001
irf member priority
Syntax
irf member member-id priority priority
undo irf member member-id priority
View
System view
Default level
3: Manage level
Parameters
member-id: Specifies an IRF member ID.
priority: Sets priority in the range of 1 to 32. The greater the priority value, the higher the priority. A
member with higher priority is more likely to be the master.
Description
Use irf member priority to change the priority of an IRF member.
Use undo irf member priority to restore the default.
By default, the priority of a member switch is 1.
Examples
Change the member priority assignment scheme in the IRF fabric so member 2 takes over as the master
at the next master election:
# Display IRF fabric information.
<Sysname> display irf
Switch Role Priority CPU-Mac
+1 Slave 29 00e0-fc00-1115
2 Slave 1 00e0-fc00-1615
*3 Master 32 00e0-fc00-1015
4 Slave 30 00e0-fc00-1515
--------------------------------------------------------
* indicates the device is the master.
+ indicates the device through which the user logs in.
The Bridge MAC of the IRF is: 00e0-fc00-1014

12
Auto upgrade : yes
Mac persistent : always
# Change the priority of the current master (member ID 3) to 16.
<Sysname> system-view
[Sysname] irf member 3 priority 16
# Change the priority of member 2 to 32.
<Sysname> system-view
[Sysname] irf member 2 priority 32
irf member renumber
Syntax
irf member member-id renumber new-member-id
undo irf member member-id renumber
View
System view
Default level
3: Manage level
Parameters
member-id: Specifies the current ID of an IRF member switch. The value range is 1 to 4.
new-member-id: Assigns a new ID to the IRF member switch. The value range is 1 to 4.
Description
Use irf member renumber to change the IRF member ID of a switch.
Use undo irf member renumber to set the IRF member ID of a switch to 1.
By default, the IRF member ID is 1.
CAUTION:
In an IRF fabric, changing IRF member IDs might cause undesirable configuration changes and even data
loss. Before you do that, back up the confi
g
uration and make sure you fully understand the impact on your
network. For example, all member switches in an IRF fabric are the same model. If you swapped the IDs
of any two members, their interface settings would also be swapped.
To create an IRF fabric, you must assign a unique IRF member ID to each switch.
Assigning IRF member IDs before the IRF fabric is formed. To prevent any undesirable configuration
change or data loss, avoid changing member IDs after the IRF fabric is formed.
The new member ID takes effect at a reboot. After the switch reboots, the settings on all member-ID
related physical resources (including common physical network ports) are removed and require
reconfiguration, regardless of whether you have saved the configuration.
To cancel the change before you reboot the member switch, use the irf member renumber command
rather than its undo form. In the command, set the new member ID to be the same as the old member ID.
Examples
# Change the member ID of an IRF member from 1 to 3.

13
<Sysname> system-view
[Sysname] irf member 1 renumber 3
Warning: Renumbering the switch number may result in configuration change or loss.
Continue?[Y/N]:Y
# Change the member ID of an IRF member from 2 to 4.
<Sysname> system-view
[Sysname] irf member 2 renumber 4
Warning: Renumbering the switch number may result in configuration change or loss.
Continue?[Y/N]y
# Cancel the change in the preceding example before rebooting the switch.
[Sysname] irf member 2 renumber 2
Warning: Renumbering the switch number may result in configuration change or loss.
Continue?[Y/N]y
irf switch-to
Syntax
irf switch-to member-id
View
System view
Default level
3: Manage level
Parameters
member-id: Specifies the member ID of a subordinate member. The member-id argument cannot take the
member ID of the master switch.
Description
Use irf switch-to to access a subordinate switch's CLI from the master’s CLI.
When you log in to an IRF fabric, you are placed at the CLI of the master, regardless of at which member
switch you are logged in. After that, you can access the CLI of a subordinate switch to execute a limited
set of maintenance commands.
At the CLI of a subordinate switch, you are placed in user view, and the command prompt changes to
<Sysname-Slave#member-ID/slot-number>, for example, <Sysname-Slave#2>. You can use the
following commands at a subordinate switch's CLI:
•display
•quit
•return
•system-view
•debugging
•terminal debugging
•terminal trapping
•terminal logging
To return to the CLI of the master switch, use the quit command.

14
Examples
# Log in to the CLI of IRF member switch 2.
<Sysname> system-view
[Sysname] irf switch-to 2
<Sysname-Slave#2>
irf-port
Syntax
irf-port member-id/port-number
undo irf-port member-id/port-number
View
System view
Default level
3: Manage level
Parameters
member-id/port-number: Specifies an IRF port number. The member-id argument represents the IRF
member ID. The port-number argument represents the index of the port on the member switch, and must
be 1 or 2.
Description
Use irf-port to enter IRF port view.
Use undo irf-port to remove all port bindings on an IRF port.
To set up an IRF link between two switches, you must enter IRF port view to bind physical ports to the IRF
port used by each switch for IRF connection.
Before removing all port bindings on an IRF port, shut down all its physical ports.
Related commands: port group interface.
Examples
# Bind Ten-GigabitEthernet 3/1/1 to IRF-port 1 on member device 3.
<Sysname> system-view
[Sysname] interface ten-gigabitethernet 3/1/1
[Sysname-Ten-GigabitEthernet3/1/1] shutdown
[Sysname-Ten-GigabitEthernet3/1/1] quit
[Sysname] irf-port 3/1
[Sysname-irf-port3/1] port group interface ten-gigabitethernet 3/1/1
[Sysname-irf-port3/1] quit
[Sysname] interface ten-gigabitethernet 3/1/1
[Sysname-Ten-GigabitEthernet3/1/1] undo shutdown
irf-port-configuration active
Syntax
irf-port-configuration active

15
View
System view
Default level
3: Manage level
Parameters
None
Description
Use irf-port-configuration active to activate IRF ports.
After connecting the physical ports between two switches and bind them to the correct IRF ports, you must
activate the settings on the IRF ports to merge the two switches into one IRF fabric. After an IRF port is
activated, its link state in the display irf topology command output changes from DIS or DOWN to UP.
You do not need to activate the IRF port settings if the configuration file that the switch starts with has
included IRF port bindings or you are binding more physical ports to an IRF port after an IRF fabric is
formed. The system automatically does the work.
Activating IRF port settings can cause IRF merge and device reboot. To avoid configuration loss, follow
this procedure to set up your IRF fabric:
1. Plan the IRF setup, including the IRF fabric topology, IRF fabric size, member ID assignment, and
bindings of physical ports and IRF ports.
2. Change the IRF member ID of each switch to make sure they are unique in the IRF fabric.
3. Connect the physical ports between neighboring switches and make sure that the peer ports can
reach each other.
4. Create IRF ports on each switch.
5. Bind the physical ports to the IRF ports on each switch.
6. Save the configuration to the next-startup configuration file on each switch.
7. Activate the IRF ports on each switch.
Examples
To configure and activate IRF port 1/2:
# Create IRF port 1/2 and bind Ten-GigabitEthernet1/1/1 to it.
<Sysname> system-view
[Sysname] interface ten-gigabitEthernet 1/1/1
[Sysname-Ten-GigabitEthernet1/1/1] shutdown
[Sysname-Ten-GigabitEthernet1/1/1] quit
[Sysname] irf-port 1/2
[Sysname-irf-port1/2] port group interface Ten-GigabitEthernet 1/1/1
[Sysname-irf-port1/2] quit
[Sysname] interface ten-gigabitEthernet 1/1/1
[Sysname-Ten-GigabitEthernet1/1/1] undo shutdown
[Sysname-Ten-GigabitEthernet1/1/1] quit
# Save the configuration so the IRF port settings can take effect after the switch reboots.
[Sysname] save
The current configuration will be written to the device. Are you sure? [Y/N]:y
Please input the file name(*.cfg)[flash:/startup.cfg]

16
(To leave the existing filename unchanged, press the enter key):
flash:/aa.cfg exists, overwrite? [Y/N]:y
Validating file. Please wait............................
Saved the current configuration to mainboard device successfully.
Slot 1:
Save next configuration file successfully.
Configuration is saved to device successfully.
# Activate the IRF port.
[Sysname] irf-port-configuration active
mad arp enable
Syntax
mad arp enable
undo mad arp enable
View
VLAN interface view
Default level
3: Manage level
Parameters
None
Description
Use mad arp enable to enable ARP MAD.
Use undo mad arp enable to disable ARP MAD.
By default, ARP MAD is disabled.
You can set up ARP MAD links between neighbor IRF members or more commonly, between each IRF
member device and an intermediate device.
When you configure ARP MAD, follow these guidelines:
•If an intermediate device is used, you can use common data links as ARP MAD links. If no
intermediate device is used, set up dedicated ARP MAD links between IRF member devices.
•Use a VLAN dedicated to ARP MAD.
•If an intermediate device is used, do the following:
{Run the spanning tree feature between the IRF fabric and the intermediate device.
{Enable the IRF fabric to change its bridge MAC address as soon as the master leaves.
{Create the ARP MAD VLAN and assign the ports on the ARP MAD links to the VLAN.
•If the intermediate device is in an IRF fabric, assign this fabric a different domain ID than the ARP
MAD-enabled fabric to avoid false detection of IRF split.
Examples
# Enable ARP MAD on VLAN-interface 3.
<Sysname> system-view
[Sysname] interface vlan-interface 3

17
[Sysname-Vlan-interface3] mad arp enable
mad bfd enable
Syntax
mad bfd enable
undo mad bfd enable
View
VLAN interface view
Default level
3: Manage level
Parameters
None
Description
Use mad bfd enable to enable BFD MAD.
Use undo mad bfd enable to disable BFD MAD.
By default, BFD MAD is disabled.
BFD MAD uses the BFD protocol for detecting multi-active collisions, and can work with or without
intermediate devices.
When you configure BFD MAD, follow these guidelines:
•You cannot enable BFD MAD detection on VLAN-interface 1.
•Do not use the BFD MAD VLAN for any other purpose. No Layer 2 or Layer 3 features, including
ARP and LACP, can work on the BFD MAD-enabled VLAN interface or any port in the VLAN. If you
configure any other feature on the VLAN, neither the configured feature nor the BFD MAD function
can work correctly.
•Do not enable the spanning tree function on any port in a BFD MAD VLAN. The MAD function is
mutually exclusive with the spanning tree function.
•Do not bind a BFD MAD-enabled VLAN interface to any VPN. The MAD function is mutually
exclusive with VPN.
•To avoid anomalies, do not assign the BFD MAD-enabled VLAN interface a common IP address, for
example, an IP address configured with the ip address command or a VRRP virtual IP address.
•If an intermediate device is used, assign the ports of BFD MAD links to the BFD MAD VLAN on the
device.
Related commands: mad ip address.
Examples
# Enable BFD MAD on VLAN-interface 3.
<Sysname> system-view
[Sysname] interface vlan-interface 3
[Sysname-Vlan-interface3] mad bfd enable