HBC H3C S5130-E Series User manual

H3C S5130-EI Switch Series
IRF Command Reference
Hangzhou H3C Technologies Co., Ltd.
http://www.h3c.com
Software version: Release 31xx
Document version: 6W102-20150731

Copyright © 2014-2015, Hangzhou H3C Technologies Co., Ltd. and its licensors
All rights reserved
No part of this manual may be reproduced or transmitted in any form or by any means without prior
written consent of Hangzhou H3C Technologies Co., Ltd.
Trademarks
H3C, , H3CS, H3CIE, H3CNE, Aolynk, , H3Care, , IRF, NetPilot, Netflow,
SecEngine, SecPath, SecCenter, SecBlade, Comware, ITCMM and HUASAN are trademarks of
Hangzhou H3C Technologies Co., Ltd.
All other trademarks that may be mentioned in this manual are the property of their respective owners.
Notice
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute the warranty of any kind, express or implied.

Preface
This command reference describes the IRF configuration commands for setting up and maintaining an
H 3 C S 513 0 - E I I R F f a b r i c .
This preface includes the following topics about the documentation:
•Audience
•Conventions
•About the H3C S5130-EI documentation set
•Obtaining documentation
•Technical support
•Documentation feedback
Audience
This documentation is intended for:
•Network planners.
•Field technical support and servicing engineers.
•Network administrators working with the S5130-EI switch series.
Conventions
This section describes the conventions used in the documentation.
Command conventions
Convention Descri
p
tion
Boldface Bold text represents commands and keywords that you enter literally as shown.
Italic Italic text represents arguments that you replace with actual values.
[ ] Square brackets enclose syntax choices (keywords or arguments) that are optional.
{ x | y | ... }
Braces enclose a set of required syntax choices separated by vertical bars, from which
you select one.
[ x | y | ... ]
Square brackets enclose a set of optional syntax choices separated by vertical bars, from
which you select one or none.
{ x | y | ... } *
Asterisk marked braces enclose a set of required syntax choices separated by vertical
bars, from which you select at least one.
[ x | y | ... ] *
Asterisk marked square brackets enclose optional syntax choices separated by vertical
bars, from which you select one choice, multiple choices, or none.
&<1-n> The argument or keyword and argument combination before the ampersand (&) sign can
be entered 1 to n times.
# A line that starts with a pound (#) sign is comments.

GUI conventions
Convention Descri
p
tion
Boldface Window names, button names, field names, and menu items are in Boldface. For
example, the New User window appears; click OK.
> Multi-level menus are separated by angle brackets. For example, File > Create > Folder.
Symbols
Convention Descri
p
tion
WARNING An alert that calls attention to important information that if not understood or followed can
result in personal injury.
CAUTION An alert that calls attention to important information that if not understood or followed can
result in data loss, data corruption, or damage to hardware or software.
IMPORTANT An alert that calls attention to essential information.
NOTE An alert that contains additional or supplementary information.
TIP An alert that provides helpful information.
Network topology icons
Represents a generic network device, such as a router, switch, or firewall.
Represents a routing-capable device, such as a router or Layer 3 switch.
Represents a generic switch, such as a Layer 2 or Layer 3 switch, or a router that supports
Layer 2 forwarding and other Layer 2 features.
Represents an access controller, a unified wired-WLAN module, or the access controller
engine on a unified wired-WLAN switch.
Represents an access point.
Represents a mesh access point.
Represents omnidirectional signals.
Represents directional signals.
Represents a security product, such as a firewall, UTM, multiservice security gateway, or
load-balancing device.
Represents a security card, such as a firewall, load-balancing, NetStream, SSL VPN, IPS,
or ACG card.
Port numbering in examples
The port numbers in this document are for illustration only and might be unavailable on your device.
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About the H3C S5130-EI documentation set
The H3C S5130-EI documentation set includes the following categories of documents:
Cate
g
or
y
Documents Pur
p
oses
Hardware
specifications and
installation
Compliance and safety manual
CE DOC
Provides regulatory information and the safety
instructions that must be followed during
installation.
Installation quick start Provides basic installation instructions.
Installation guide Provides a complete guide to hardware installation
and hardware specifications.
Power modules user manual
Describes the appearance, specifications, and
installation and removal of hot-swappable power
modules.
Pluggable transceiver modules
installation guide
Guides you through installing SFP/SFP+
transceiver modules.
Pluggable modules manual
Describes the hot-swappable modules available for
the H3C switches, their external views, and
specifications.
Software
configuration
Configuration guides Describe software features and configuration
procedures.
Command references Provide a quick reference to all available
commands.
Operations and
maintenance
MIB Companion Describes the MIBs for the software release.
Release notes
Provide information about the product release,
including the version history, hardware and
software compatibility matrix, version upgrade
information, technical support information, and
software upgrading.
Obtaining documentation
Access the most up-to-date H3C product documentation on the World Wide Web
at http://www.h3c.com.
Click the following links to obtain different categories of product documentation:
[Technical Documents]—Provides hardware installation, software upgrading, and software feature
configuration and maintenance documentation.
[Products & Solutions]—Provides information about products and technologies, as well as solutions.
[Software Download]—Provides the documentation released with the software version.
Technical support
servic[email protected]

http://www.h3c.com
Documentation feedback
You can e-mail your comments about product documentation to [e-mail].
We appreciate your comments.

i
Contents
IRF commands ······························································································································································ 1
display irf ··································································································································································1
display irf configuration···········································································································································2
display irf link ···························································································································································3
display irf topology ··················································································································································4
display irf-port load-sharing mode··························································································································5
display mad ······························································································································································7
irf auto-update enable··············································································································································8
irf domain··································································································································································9
irf link-delay···························································································································································· 10
irf mac-address persistent ····································································································································· 11
irf member description·········································································································································· 12
irf member priority················································································································································· 13
irf member renumber············································································································································· 13
irf-port ····································································································································································· 14
irf-port global load-sharing mode ························································································································ 15
irf-port load-sharing mode ···································································································································· 16
irf-port-configuration active··································································································································· 17
mad arp enable····················································································································································· 18
mad bfd enable····················································································································································· 19
mad enable···························································································································································· 20
mad exclude interface ·········································································································································· 21
mad ip address······················································································································································ 22
mad nd enable ······················································································································································ 23
mad restore ···························································································································································· 24
port group interface ·············································································································································· 25
Index ···········································································································································································27

1
IRF commands
display irf
Use display irf to display IRF fabric information, including the member ID, role, priority, bridge MAC
address, and description of each IRF member.
Syntax
display irf
Views
Any view
Predefined user roles
network-admin
network-operator
Examples
# Display IRF fabric information.
<Sysname> display irf
MemberID Role Priority CPU-Mac Description
1 Loading 1 00e0-fc0f-8c02 F1Num001
*+2 Master 1 00e0-fc0f-8c03 F1Num002
--------------------------------------------------------
* indicates the device is the master.
+ indicates the device through which the user logs in.
The Bridge MAC of the IRF is: 00e0-fc00-1000
Auto upgrade : yes
Mac persistent : always
Domain ID : 30
Table 1 Command output
Field Descri
p
tion
MemberID
IRF member ID:
•ID of the master is prefixed with an asterisk (*) sign.
•ID of the device where you are logged in is prefixed with a plus (+) sign.
Role
Role of the member device in the IRF fabric:
•Standby—Subordinate device.
•Master—Master device.
•Loading—The device is loading software images.
Priority IRF member priority.
CPU-MAC MAC address of the CPU in the device.

2
Field Descri
p
tion
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.
The Bridge MAC of the
IRF is Bridge MAC address of the IRF fabric.
Auto upgrade
Status of the software auto-update function:
•yes—Enabled. The master propagates its software images automatically to the
device you are adding to the IRF fabric.
•no—Disabled. You must manually make sure the joining device uses the same
software images as the master. If the software images are different, the new
device cannot join the IRF fabric.
MAC persistent
IRF bridge MAC persistence setting:
•6 min—Bridge MAC address of the IRF fabric remains unchanged for 6 minutes
after the address owner leaves.
•always—Bridge MAC address of the IRF fabric does not change after the
address owner leaves.
•no—Bridge MAC address of the current master replaces the original bridge
MAC address as soon as the owner of the original address leaves.
Domain ID Domain ID of the IRF fabric. The domain ID you assign to an IRF fabric must uniquely
identify the fabric in a multi-IRF fabric network.
Related commands
•display irf configuration
•display irf topology
display irf configuration
Use display irf configuration to display basic IRF settings, including each member's current member ID,
new member ID, and physical interfaces bound to the IRF ports. The new member IDs take effect at
reboot.
Syntax
display irf configuration
Views
Any view
Predefined user roles
network-admin
network-operator
Examples
# Display basic IRF settings.
<Sysname> display irf configuration
MemberID NewID IRF-Port1 IRF-Port2

3
2 2 Ten-GigabitEthernet2/0/25 Ten-GigabitEthernet2/0/26
5 5 Ten-GigabitEthernet5/0/25 Ten-GigabitEthernet5/0/26
Ten-GigabitEthernet5/0/27
Ten-GigabitEthernet5/0/28
10 10 Ten-GigabitEthernet10/0/25 Ten-GigabitEthernet10/0/26
Ten-GigabitEthernet10/0/27
Ten-GigabitEthernet10/0/28
Table 2 Command output
Field Descri
p
tion
MemberID Current member ID of the device.
NewID Member ID assigned to the device. This member ID takes effect at reboot.
IRF-Port1 Physical interfaces bound to IRF-port 1. The bindings take effect at reboot.
This field displays disable if no physical interfaces are bound to the IRF port.
IRF-Port2 Physical interfaces bound to IRF-port 2. The bindings take effect at reboot.
This field displays disable if no physical interfaces are bound to the IRF port.
Related commands
•display irf
•display irf topology
display irf link
Use display irf link to display IRF link information, including IRF ports, IRF physical interfaces, and IRF
link status.
Syntax
display irf link
Views
Any view
Predefined user roles
network-admin
network-operator
Examples
# Display IRF link information.
<Sysname> display irf link
Member 1
IRF Port Interface Status
1 Ten-GigabitEthernet1/0/25 UP
Ten-GigabitEthernet1/0/26 DOWN
Ten-GigabitEthernet1/0/27 DOWN
Ten-GigabitEthernet1/0/28 DOWN
2 disable --
Member 2

4
IRF Port Interface Status
1 disable --
2 Ten-GigabitEthernet2/0/25 UP
Ten-GigabitEthernet2/0/26 DOWN
Ten-GigabitEthernet2/0/27 DOWN
Ten-GigabitEthernet2/0/28 DOWN
Table 3 Command output
Field Descri
p
tion
Member ID IRF member ID.
IRF Port
IRF port number:
•1—IRF-port 1.
•2—IRF-port 2.
Interface Physical interfaces bound to the IRF port. This field displays disable if no
physical interfaces have been bound to the IRF port.
Status
Link state of the IRF physical interface:
•UP—The link is up.
•DOWN—The link is down.
•ADM—The interface has been manually shut down by using the shutdown
command.
•ABSENT—Interface module that hosts the interface is not present.
display irf topology
Use display irf topology to display IRF fabric topology information, including the member IDs, IRF port
state, adjacencies of IRF ports, and CPU MAC address of the master.
Syntax
display irf topology
Views
Any view
Predefined user roles
network-admin
network-operator
Examples
# Display the IRF fabric topology.
<Sysname> display irf topology
Topology Info
-------------------------------------------------------------------------
IRF-Port1 IRF-Port2
MemberID Link neighbor Link neighbor Belong To
1 DOWN -- UP 2 00e0-fc0f-8c02
2 UP 1 UP 3 00e0-fc0f-8c02
3 UP 2 DIS -- 00e0-fc0f-8c02

5
Table 4 Command output
Field Descri
p
tion
IRF-Port1 Information about IRF-port 1, including its link state and neighbor.
IRF-Port2 Information about IRF-port 2, including its link state and neighbor.
MemberID IRF member ID.
Link
Link state of the IRF port:
•UP—The IRF link is up.
•DOWN—The IRF link is down because the port has no physical link or has not
been activated by the irf-port-configuration active command.
•DIS—No physical interfaces have been bound to the IRF port. You can use the
port group interface command to bind a minimum of one physical interface to
the IRF port depending on the network requirements.
•TIMEOUT—IRF hello interval has timed out. You must examine the link for a
connection loss.
neighbor IRF member ID of the device connected to the IRF port.
If no device is connected to the port, this field displays two hyphens (--).
Belong To IRF fabric that has the device, represented by the CPU MAC address of the
master in the IRF fabric.
Related commands
•display irf
•display irf configuration
display irf-port load-sharing mode
Use display irf-port load-sharing mode to display IRF link load sharing mode.
Syntax
display irf-port load-sharing mode [ irf-port [ member-id/port-number ] ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
irf-port: Displays IRF port-specific load sharing modes.
member-id/port-number: Specifies an IRF port number. The member-id argument represents an IRF
member ID. The port-number argument represents the index number (1 or 2) of the IRF port on the
member device.
Usage guidelines
To display the global load sharing mode for IRF links, execute this command without any keywords or
arguments.

6
To display the load sharing mode used on each IRF port in the IRF fabric, specify the irf-port keyword but
not any IRF port. If no IRF ports are in up state, this command displays No IRF link exists.
To display the load sharing mode used on a specific IRF port, specify both the irf-port keyword and the
member-id/port-number argument.
Examples
# Display the global load sharing mode for IRF links. In this example, because no user-defined global
load sharing mode has been configured, the default global load sharing mode applies.
<Sysname> display irf-port load-sharing mode
irf-port Load-Sharing Mode:
Layer 2 traffic: packet type-based sharing
Layer 3 traffic: packet type-based sharing
# Display the global load sharing mode for IRF links. In this example, because a user-defined global load
sharing mode has been configured, the user-defined global load sharing mode applies.
<Sysname> display irf-port load-sharing mode
irf-port Load-Sharing Mode:
destination-ip address source-ip address
# Display the load sharing mode of IRF-port 1/1. In this example, because neither port-specific load
sharing mode nor user-defined global load sharing mode has been configured, the default global load
sharing mode applies.
<Sysname> display irf-port load-sharing mode irf-port 1/1
irf-port1/1 Load-Sharing Mode:
Layer 2 traffic: packet type-based sharing
Layer 3 traffic: packet type-based sharing
# Display the load sharing mode of IRF-port 1/1 after destination MAC-based load sharing is configured
on the port.
<Sysname> display irf-port load-sharing mode irf-port 1/1
irf-port1/1 Load-Sharing Mode:
destination-mac address
Table 5 Command output
Field Descri
p
tion
irf-port Load-Sharing Mode
Global load sharing mode for IRF links:
•If no global IRF link load sharing mode has been configured, the
default global load sharing mode applies.
•If a user-defined global load sharing mode has been
configured, the configured mode applies.
irf-port1/1 Load-Sharing Mode
Link load sharing mode of IRF-port 1/1:
•If you have not configured a port-specific load sharing mode,
the global IRF link load sharing mode applies.
•If you have configured a port-specific load sharing mode, the
configured mode applies.
Layer 2 traffic: packet type-based
sharing
Default load sharing mode for traffic that has no IP header. By
default, this type of traffic is distributed based on packet types.
Layer 3 traffic: packet type-based
sharing
Default load sharing mode for non-TCP/-UDP IP packets. By default,
this type of traffic is distributed based on packet types.

7
Field Descri
p
tion
destination-ip address source-ip
address
Configured global load sharing mode. Traffic is distributed based
on destination and source IP addresses.
destination-mac address Configured load sharing mode for IRF-port 1/1. Traffic is
distributed based on destination MAC addresses.
display mad
Use display mad to display MAD status and settings.
Syntax
display mad [verbose ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
verbose: Displays detailed MAD information. If you do not specify this keyword, the command only
displays whether a MAD mechanism is enabled or disabled.
Examples
# Display brief MAD information.
MAD ARP enabled.
MAD ND enabled.
MAD LACP disabled.
MAD BFD enabled.
# Display detailed MAD information.
<Sysname> display mad verbose
Multi-active recovery state: No
Excluded ports(user-configured):
Vlan-interface999
Excluded ports(system-configured):
Ten-GigabitEthernet1/0/25
Ten-GigabitEthernet1/0/26
Ten-GigabitEthernet2/0/27
Ten-GigabitEthernet2/0/28
MAD ARP enabled interface:
Vlan-interface2
MAD ND enabled interface:
Vlan-interface2
MAD LACP enabled interface: Bridge-Aggregation 1
MAD status : Normal
Member ID Port MAD status
1 Ten-GigabitEthernet1/0/1 Normal

8
2 Ten-GigabitEthernet2/0/1 Normal
MAD BFD enabled interface: VLAN-interface 3
MAD status : Normal
Member ID MAD IP address Neighbor MAD status
1 192.168.1.1/24 2 Normal
1 192.168.1.1/24 3 Normal
2 192.168.1.2/24 1 Normal
2 192.168.1.2/24 3 Normal
3 192.168.1.3/24 1 Normal
3 192.168.1.3/24 2 Normal
Table 6 Command output
Field Descri
p
tion
Multi-active recovery state
Whether the IRF fabric is in Recovery state:
•Yes—The IRF fabric is in Recovery state. When MAD detects that an IRF
fabric has split into multiple IRF fabrics, it allows one fabric to forward
traffic. All the other IRF fabrics are set to the Recovery state. In Recovery
state, MAD shuts down all physical ports in the fabric except for the IRF
physical interfaces and ports configured to not shut down.
•No—The IRF fabric is not in Recovery state. It is active and can forward
traffic.
Excluded
ports(user-configured)
Ports manually configured to not shut down when the IRF fabric transitions to
the Recovery state.
Excluded
ports(system-configured)
Ports by default set to not shut down when the IRF fabric transitions to the
Recovery state. These ports are not user configurable.
MAD status
MAD operating status:
•Normal—The MAD mechanism is operating correctly.
•Faulty—The MAD mechanism is not operating correctly on the interface or
port. You must check the interface or port for connectivity or configuration
problems.
Member ID IRF member ID of the local device.
Port Member ports of the aggregate interface used for LACP MAD.
Neighbor IRF member ID of the neighbor member device.
irf auto-update enable
Use irf auto-update enable to enable the software auto-update function for propagating software
images of the master in an IRF fabric to all its members.
Use undo irf auto-update enable to disable the software auto-update function.
Syntax
irf auto-update enable
undo irf auto-update enable
Default
The software auto-update function is enabled.

9
Views
System view
Predefined user roles
network-admin
Usage guidelines
To join an IRF fabric, a device must use the same software images as the master in the IRF fabric. The
software auto-update function propagates the current software images of the master in an IRF fabric to all
its members automatically. If software auto-update is disabled, you must manually update the device with
the software images of the master before adding it to the IRF fabric.
When you add a device to the IRF fabric, software auto-update compares the startup software images of
the device with the current software images of the IRF master. If the two sets of images are different, the
device performs the following tasks automatically:
1. Downloads the current software images of the master.
2. Sets the downloaded images as main startup software images.
3. Reboots with the new software images to rejoin the IRF fabric.
Before enabling software auto-update, make sure the device you are adding to the IRF fabric has
sufficient storage space for the new software images.
If sufficient storage space is not available, the device deletes the current software images automatically.
If the reclaimed space is still insufficient, the device cannot complete the auto-update. You must reboot the
device and access the Boot menu to delete files.
To ensure a successful software auto-update in a multi-user environment, prevent the action of rebooting
member devices during the auto-update process. You can configure the information center to output the
software auto-update status to configuration terminals (see Network Management and Monitoring
Configuration Guide).
Examples
# Enable the software auto-update function.
<Sysname> system-view
[Sysname] irf auto-update enable
irf domain
Use irf domain to assign a domain ID to the IRF fabric.
Use undo irf domain to restore the default IRF domain setting.
Syntax
irf domain domain-id
undo irf domain
Default
IRF domain ID is 0.
Views
System view

10
Predefined user roles
network-admin
Parameters
domain-id: Specifies a domain ID for the IRF fabric. The value range is 0 to 4294967295.
Usage guidelines
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 one IRF fabric uses another IRF fabric as the intermediate device for LACP MAD, ARP MAD, or ND
MAD, you must assign the two IRF fabrics different domain IDs for correct split detection. False detection
causes IRF split.
An IRF fabric has only one IRF domain ID. You can change the IRF domain ID by using the following
commands: irf domain, mad enable, mad arp enable, or mad nd enable. The IRF domain IDs
configured by using these commands overwrite each other.
Examples
# Set the IRF domain ID to 10.
<Sysname> system-view
[Sysname] irf domain 10
irf link-delay
Use irf link-delay to set a delay for the IRF ports to report a link down event.
Use undo irf link-delay to restore the default.
Syntax
irf link-delay interval
undo irf link-delay
Default
The IRF link down report delay is 4 seconds.
Views
System view
Predefined user roles
network-admin
Parameters
interval: Sets the IRF link down report delay in the range of 0 to 10000 milliseconds. If the interval is set
to 0, link down events are reported without any delay.
Usage guidelines
An IRF link down report delay helps avoid link flapping. Link flapping causes frequent IRF splits and
merges during a short time.
An IRF port handles link down and link up events as follows:

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•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.
When you configure the IRF link down report delay, follow these restrictions and guidelines:
•Make sure the IRF link down report delay is shorter than the heartbeat timeout settings of
upper-layer protocols (for example, CFD). The heartbeat timeout setting is the interval for a link to
be determined as down by an upper-layer protocol. If the report delay is longer than the timeout
setting of a protocol, unnecessary recalculations might occur.
•Set the delay to 0 seconds in the following situations:
{The IRF fabric requires a fast master/subordinate or IRF link switchover.
{The BFD or GR feature is used.
{You want to shut down an IRF physical interface or reboot an IRF member device. (After you
complete the operation, reconfigure the delay depending on the network condition.)
Examples
# Set the IRF link down report delay to 300 milliseconds.
<Sysname> system-view
[Sysname] irf link-delay 300
irf mac-address persistent
Use irf mac-address persistent to configure IRF bridge MAC persistence.
Use undo irf mac-address persistent to enable the IRF fabric to change its bridge MAC address as soon
as the address owner leaves.
Syntax
irf mac-address persistent { always | timer }
undo irf mac-address persistent
Default
After the address owner leaves, the IRF bridge MAC address remains unchanged for 6 minutes. If the
address owner does not rejoin the IRF fabric within the time limit, the fabric uses the bridge MAC address
of the current master as the bridge MAC address.
Views
System view
Predefined user roles
network-admin
Parameters
always: Enables the IRF bridge MAC address to be permanent. The IRF bridge MAC address does not
change after the address owner leaves.
timer: Enables the IRF bridge MAC address to remain unchanged for 6 minutes after the address owner
leaves. If the address owner rejoins the IRF fabric within the time limit, the IRF bridge MAC address does

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not change. If the address owner does not rejoin within the time limit, the IRF fabric uses the bridge MAC
address of the current master as the bridge MAC address.
Usage guidelines
The command setting takes effect only after the address owner leaves the IRF fabric. Events such as
active/standby or master/subordinate switchovers cannot trigger the command setting to take effect.
IRF bridge MAC persistence specifies the amount of time an IRF fabric can continue using a bridge MAC
address as its bridge MAC address after the address owner leaves.
If ARP MAD or ND MAD is used, use the undo irf mac-address persistent command to disable IRF bridge
MAC persistence.
Configure the irf mac-address persistent always command on the IRF fabric that meets the following
requirements:
•The IRF fabric uses a daisy-chain topology.
•The IRF fabric has aggregate links with upstream or downstream devices.
The persistence setting prevents transmission delay or packet loss after the address owner leaves the IRF
fabric.
By default, an IRF fabric uses the bridge MAC address of the master device as its bridge MAC address.
Layer 2 protocols, such as LACP, use this bridge MAC address to identify the IRF fabric. On a switched
LAN, the bridge MAC address must be unique.
To avoid duplicate bridge MAC addresses, an IRF fabric can change its bridge MAC address
automatically after the address owner leaves. However, the change causes temporary service disruption.
Depending on the network condition, you can enable the IRF fabric to retain or change its bridge MAC
address after the address owner leaves.
If two IRF fabrics have the same bridge MAC address, they cannot merge.
Examples
# Enable the IRF bridge MAC address to persist forever.
<Sysname> system-view
[Sysname] irf mac-address persistent always
irf member description
Use irf member description to configure a description for an IRF member.
Use undo irf member description to restore the default.
Syntax
irf member member-id description text
undo irf member member-id description
Default
No description is configured for an IRF member device.
Views
System view
Predefined user roles
network-admin

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Parameters
member-id: Specifies the ID of an IRF member.
text: Configures the IRF member description, a string of 1 to 127 characters.
Usage guidelines
Configure a description to describe the location or purpose of a member device.
Examples
# Configure a description for IRF member 1.
<Sysname> system-view
[Sysname] irf member 1 description F1Num001
irf member priority
Use irf member priority to change the priority of an IRF member.
Use undo irf member priority to restore the default.
Syntax
irf member member-id priority priority
undo irf member member-id priority
Default
IRF member priority is 1.
Views
System view
Predefined user roles
network-admin
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.
Usage guidelines
Change member priority assignment to affect the maser election result.
To display the ID and priority settings of IRF members, use the display irf command.
Examples
# Set the priority of IRF member 2 to 32.
<Sysname> system-view
[Sysname] irf member 2 priority 32
irf member renumber
Use irf member renumber to change the IRF member ID of a device.
Use undo irf member renumber to restore the previous IRF member ID of the device.