HP FlexFabric 7900 Series Installation manual

HP FlexFabric 7900 Switch Series
IRF
Command Reference
Part number: 5998-4290
Software version: Release 2109
Document version: 6W100-20140122

Legal and notice information
© Copyright 2014 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
chassis convert mode irf ··········································································································································1
display irf ··································································································································································2
display irf configuration···········································································································································3
display irf link ···························································································································································4
display irf topology ··················································································································································5
display irf-port load-sharing mode··························································································································6
display mad ······························································································································································8
irf auto-merge enable···············································································································································9
irf auto-update enable··········································································································································· 10
irf domain······························································································································································· 11
irf link-delay···························································································································································· 12
irf mac-address persistent ····································································································································· 13
irf member······························································································································································ 14
irf member description·········································································································································· 15
irf member priority················································································································································· 15
irf member renumber············································································································································· 16
irf priority································································································································································ 17
irf-port global load-sharing mode ························································································································ 18
irf-port load-sharing mode ···································································································································· 19
irf-port member-id/port-number···························································································································· 20
irf-port port-number················································································································································ 21
irf-port-configuration active··································································································································· 21
mad bfd enable····················································································································································· 22
mad enable···························································································································································· 23
mad exclude interface ·········································································································································· 24
mad ip address······················································································································································ 25
mad restore ···························································································································································· 26
port group interface ·············································································································································· 27
Support and other resources ·····································································································································29
Contacting HP ································································································································································ 29
Subscription service ·············································································································································· 29
Related information························································································································································ 29
Documents······························································································································································ 29
Websites································································································································································· 29
Conventions ···································································································································································· 30
Index ···········································································································································································32

1
IRF configuration commands
chassis convert mode irf
Use chassis convert mode irf to enable IRF mode.
Use undo chassis convert mode to restore standalone mode.
Syntax
chassis convert mode irf
undo chassis convert mode
Default
The device operates in standalone mode.
Views
System view
Predefined user roles
network-admin
Usage guidelines
To set up an IRF fabric, place all member devices in IRF mode after you configure member IDs, priorities,
and IRF port settings for the member devices. In standalone mode, a device cannot form an IRF fabric
with other devices.
IRF generates packets on a device in IRF mode even if the device does not form an IRF fabric with any
other device. To protect system resources, set a device to operate in standalone mode after you remove
the device from an IRF fabric.
Examples
# Enable IRF mode.
<Sysname> system-view
[Sysname] chassis convert mode irf
The device will switch to IRF mode and reboot.
You are recommended to save the current running configuration and specify the configuration
file for the next startup. Continue? [Y/N]:y
Do you want to convert the content of the next startup configuration file flash:/startup.cfg
to make it available in IRF mode? [Y/N]:y
Please wait...
Saving the converted configuration file to the main board succeeded.
# Restore standalone mode.
<Sysname> system-view
[Sysname] undo chassis convert mode
The device will switch to stand-alone mode and reboot.
You are recommended to save the current running configuration and specify the configuration
file for the next startup. Continue? [Y/N]:y

2
Do you want to convert the content of the next startup configuration file flash:/startup.cfg
to make it available in stand-alone mode? [Y/N]:y
Please wait...
Saving the converted configuration file to the main board succeeded.
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 Slot Role Priority CPU-Mac Description
*+1 0 Master 1 0210-fc03-0007 -----
--------------------------------------------------
* indicates the device is the master.
+ indicates the device through which the user logs in.
The Bridge MAC of the IRF is: 3ce5-a6b8-3800
Auto upgrade : yes
Mac persistent : always
Domain ID : 0
Auto merge : no
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.
Slot MPU slot number.
Role
Role of the MPU in the IRF fabric:
•Standby—Standby MPU for the global active MPU.
•Master—Global active MPU.
•Loading—Standby MPU for the global active MPU. The standby MPU
is loading software images.
Priority IRF member priority.
CPU-MAC MAC address of the CPU on the MPU.

3
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.
Auto upgrade
Status of the software auto-update function:
•yes—Enabled. The master device automatically pushes its software
images 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 device. If the software images
are different, the new device cannot join the IRF fabric.
MAC persistent
IRF bridge MAC persistence setting:
•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.
Auto merge
State of the auto merge function:
•yes—Enabled. The IRF fabric automatically reboots its member devices
when it fails in the master election during an IRF fabric merge.
•no—Disabled. Manual reboot is required to complete an IRF fabric
merge.
display irf configuration
Use display irf configuration to display basic IRF settings on each IRF member device, including the
current member ID, new member ID, and physical ports 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
# In standalone mode, display the basic IRF settings of the device.
<Sysname> display irf configuration
MemberID Priority IRF-Port1 IRF-Port2
-- 1 disable disable
# In IRF mode, display all members' basic IRF settings.
<Sysname> display irf configuration

4
MemberID NewID IRF-Port1 IRF-Port2
1 1 FortyGigE1/8/0/1 disable
FortyGigE1/8/0/2
2 2 disable FortyGigE2/8/0/1
FortyGigE2/8/0/2
Table 2 Command output
Field Descri
p
tion
MemberID Current member ID of the device.
If no member ID is assigned, this field displays two hyphens (--).
Priority Member priority.
This field is displayed only when the device is operating in standalone mode.
NewID Member ID assigned to the device. This member ID takes effect at reboot.
This field is displayed only when the device is operating in IRF mode.
IRF-Port1 Physical ports bound to IRF-port 1. The bindings take effect at reboot.
If this IRF port is not enabled, this field displays disable.
IRF-Port2 Physical ports bound to IRF-port 2. The bindings take effect at reboot.
If this IRF port is not enabled, this field displays disable.
display irf link
Use display irf link to display IRF link information, including IRF ports, physical IRF ports, 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 FortyGigE1/9/0/1 UP
FortyGigE1/9/0/2 UP
FortyGigE1/9/0/3 DOWN
FortyGigE1/9/0/4 ADM
2 disable --
Member 2
IRF Port Interface Status

5
1 disable --
2 FortyGigE2/8/0/1 UP
FortyGigE2/8/0/2 UP
FortyGigE2/8/0/3 DOWN
FortyGigE2/8/0/4 ADM
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 ports bound to the IRF port. If no physical port has been bound to
the IRF port, this field displays disable.
Status
Link state of IRF physical ports:
•UP—Link is up.
•DOWN—Link is down.
•ADM—The port has been manually shut down with the shutdown
command.
•ABSENT—Interface module that hosts the port 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 UP 2 DIS --- 00e0-fc0f-8c0f
2 DIS --- UP 1 00e0-fc0f-8c0f

6
Figure 1 IRF topology
Table 4 Command output
Field Descri
p
tion
IRF-Port 1 Information about IRF-port 1, including its link state and neighbor.
IRF-Port 2 Information about IRF-port 2, including its link state and neighbor.
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.
•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 IRF port, this field displays three hyphens (---).
Belong To IRF fabric that has the device, represented by the CPU MAC address of the
master in the IRF fabric.
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 keyword or
argument.

7
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.
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: destination-mac address, source-mac address
Layer 3 traffic: destination-ip address, source-ip address
Layer 4 traffic: destination-port, source-port
# Display the global load sharing mode for IRF links. In this example, because a global load sharing
mode based on source and destination IP addresses have been configured, the configured 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-port 1/1 Load-Sharing Mode:
Layer 2 traffic: destination-mac address, source-mac address
Layer 3 traffic: destination-ip address, source-ip address
Layer 4 traffic: destination-port, source-port
# Display the load sharing mode of IRF-port 1/1. In this example, a load sharing mode based on
source and destination MAC addresses has been configured on the port.
<Sysname> display irf-port load-sharing mode irf-port 1/1
irf-port1/1 Load-Sharing Mode:
destination-mac address, source-mac address
# Display the load sharing mode used on each IRF port.
<Sysname> display irf-port load-sharing mode irf-port
irf-port1/1 Load-Sharing Mode:
destination-mac address, source-mac address
irf-port1/2 Load-Sharing Mode:
Layer 2 traffic: destination-mac address, source-mac address
Layer 3 traffic: destination-ip address, source-ip address
Layer 4 traffic: destination-port, source-port

8
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-port 1/1 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: destination-mac address,
source-mac address
Default load sharing mode for traffic that has no IP header. By
default, this type of traffic is distributed based on source and
destination MAC addresses.
Layer 3 traffic: destination-ip address,
source-ip address
Default load sharing mode for non-TCP/-UDP IP packets. By
default, this type of traffic is distributed based on source and
destination IP addresses.
Layer 4 traffic: destination-port,
source-port
Default load sharing mode for TCP/UDP packets. By default, this
type of traffic is distributed based on source and destination port
numbers.
destination-ip address, source-ip
address
User-configured IRF link load sharing mode. In this sample output,
traffic on the IRF port is distributed based on source and
destination IP addresses.
destination-mac address, source-mac
address
User-configured IRF link load sharing criteria. In this sample output,
the criteria are source and 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 this keyword is not provided, the command only
displays whether a MAD mechanism is enabled.
Examples
# Display brief MAD information.
<Sysname> display mad

9
MAD LACP enabled.
MAD BFD disabled.
# Display detailed MAD information.
<Sysname> display mad verbose
Current MAD status: Detect
Excluded ports(configurable):
FortyGigE2/1/0/2
FortyGigE2/1/0/3
Excluded ports(can not be configured):
FortyGigE1/9/0/1
FortyGigE1/9/0/2
FortyGigE1/9/0/3
FortyGigE1/9/0/4
FortyGigE2/9/0/1
FortyGigE2/9/0/2
FortyGigE2/9/0/3
FortyGigE2/9/0/4
MAD enabled aggregation port:
Bridge-Aggregation2
MAD BFD enabled interface:
Vlan-interface2
mad ip address 10.0.0.2 255.255.0.0 member 1
mad ip address 10.0.0.3 255.255.0.0 member 2
Table 6 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. MAD also shuts down all physical ports in the fabric
except IRF physical ports and ports that are configured to not shut
down.
•Detect to Recovery—State of the IRF fabric is changing from Detect to
Recovery, for example, as the result of an IRF split.
•Recovery to Detect—State of the IRF fabric is changing from Recovery
to Detect.
Excluded ports(configurable) Ports manually configured to not shut down when the IRF fabric transits to
the Recovery state.
Excluded ports(can not be
configured)
Ports set by default to not shut down when the IRF fabric transits to the
Recovery state.
irf auto-merge enable
Use irf auto-merge enable to enable IRF auto merge. The function enables an IRF fabric to automatically
reboot its member devices if it fails in the master election during an IRF fabric merge.
Use undo irf auto-merge enable to disable this function.

10
Syntax
irf auto-merge enable
undo irf auto-merge enable
Default
This function is disabled. To complete an IRF merge, you must manually reboot the IRF fabric that has
failed in the master election.
Views
System view
Predefined user roles
network-admin
Usage guidelines
To avoid an auto merge failure, make sure the auto merge function is enabled on both IRF fabrics that
are merging.
This command is available in IRF mode. When the operating mode is changed to standalone, the
configuration of this command is lost, regardless of whether you have saved the configuration.
The IRF auto merge function takes effect on the IRF merge caused by any of the following events:
•The IRF link recovers from a link failure.
•The IRF physical ports of the member devices are connected.
The function does not take effect on the IRF merge that occurs when you bind a physical port to an IRF
port in IRF mode.
Examples
# Enable IRF auto merge.
<Sysname> system-view
[Sysname] irf auto-merge enable
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.
Views
System view
Predefined user roles
network-admin

11
Usage guidelines
This command is available in IRF mode. When you change the operating mode from IRF to standalone,
the command configuration is lost, regardless of whether you have saved the configuration.
To join an IRF fabric, a device must use the same software images as the master in 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 the main startup software images.
3. Reboots with the new software images to rejoin the IRF fabric.
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.
Before you use the software auto-update function, verify the following items:
•The device you are adding to the IRF fabric is compatible with the software version running on the
master. If the software versions are incompatible, the software auto-update function cannot work.
•The storage space of the device you are adding to the IRF fabric is sufficient for saving the new
software images.
If the device does not have enough storage space, it 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 BootWare menus to delete files.
To ensure a successful software auto-update in a multi-user environment, prevent users from rebooting or
swapping member devices during the software 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 an 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

12
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
This command is available in IRF mode. When you change the operating mode from IRF to standalone,
the IRF domain setting is lost, regardless of whether you have saved the configuration.
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, 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 irf domain or
mad enable command. The IRF domain IDs configured with these commands overwrite each other.
Examples
# Set the IRF domain ID to 30.
<Sysname> system-view
[Sysname] irf domain 30
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 event report delay is 4000 milliseconds (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
This command is available in IRF mode. When you change the operating mode from IRF to standalone,
the command configuration is lost, regardless of whether you have saved the configuration.
Link flapping causes frequent IRF splits and merges during a short time. You can avoid this situation by
configuring the IRF ports to delay reporting link down events.
An IRF port handles link down and link up events as follows:

13
•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.
HP recommends setting the delay to 0 seconds in one of the following situations:
•The IRF fabric requires a quick master/subordinate or IRF link switchover.
•The BFD or GR feature is used.
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 master leaves.
Syntax
irf mac-address persistent { always | timer }
undo irf mac-address persistent
Default
Bridge MAC address of the IRF fabric does not change after the master leaves.
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 master re-election.
timer: Enables the IRF bridge MAC address to remain the same for 6 minutes after the master device
leaves. If the device rejoins the IRF fabric before the time limit is reached, the IRF bridge MAC address
does not change. If the device does not rejoin the IRF fabric within the time limit, the IRF fabric uses the
bridge MAC address of the new master as the IRF bridge MAC address.
Usage guidelines
IRF bridge MAC persistence specifies the amount of time an IRF fabric can continue using the old master
bridge MAC address as its bridge MAC address after a master re-election.
Bridge MAC persistence is available in IRF mode. When you change the operating mode from IRF to
standalone, the bridge MAC persistence setting is lost, regardless of whether you have saved the
configuration.

14
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 its master leaves. However, the change causes temporary service disruption.
Depending on your network condition, you can enable the IRF fabric to preserve or change its bridge
MAC address after the master leaves.
If VRRP load balancing is used, execute the irf mac-address persistent always command to prevent the
IRF bridge MAC address from changing. For more information about VRRP, see High Availability
Configuration Guide.
If two IRF fabrics have the same bridge MAC address, they cannot merge.
Examples
# Enable the IRF bridge MAC address to be permanent.
<Sysname> system-view
[Sysname] irf mac-address persistent always
irf member
Use irf member to assign a member ID to the device in standalone mode.
Use undo irf member to restore the default.
Syntax
irf member member-id
undo irf member
Default
The device operates in standalone mode and has no member ID.
Views
System view
Predefined user roles
network-admin
Parameters
member-id: Assigns an IRF member ID to the device. The value range for this argument is 1 to 4.
However, the assigned IRF member ID must be 1 or 2. If you use 3 or 4, the 7900 IRF fabric cannot be
set up.
Usage guidelines
You must assign an IRF member ID to a device before enabling its IRF mode. The member ID takes effect
after the IRF mode is enabled. This member ID must be unique among all IRF member devices.
To change the member ID of a device in IRF mode, use the irf member member-id renumber
new-member-id command. The new member ID takes effect at reboot.
Examples
# Assign member ID 2 to the device in standalone mode.
<Sysname> system-view

15
[Sysname] irf member 2
Info: Member ID change will take effect after the member reboots and operates in IRF mode.
Related commands
irf member renumber
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 any IRF member.
Views
System view
Predefined user roles
network-admin
Parameters
member-id: Specifies the ID of an IRF member. The value range for this argument is 1 to 4. However, the
specified IRF member ID can only be 1 or 2.
text: Configures the IRF member description, a string of 1 to 127 characters.
Usage guidelines
You can configure a description to describe the location or purpose of a member device.
This command is available in IRF mode. When you change the operating mode from IRF to standalone,
the IRF member description is lost, regardless of whether you have saved the configuration.
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

16
Default
IRF member priority is 1.
Views
System view
Predefined user roles
network-admin
Parameters
member-id: Specifies an IRF member ID. The value range for this argument is 1 to 4. However, the
specified IRF member ID can only be 1 or 2.
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.
This command is available in IRF mode. The new priority setting takes effect at the next master election,
but it does not trigger master election.
To assign an IRF priority to a device in standalone mode, use the irf priority command.
Examples
# Set the priority of IRF member 2 to 32.
<Sysname> system-view
[Sysname] irf member 2 priority 32
Related commands
irf priority
irf member renumber
Use irf member renumber to change the member ID of a device in the IRF fabric.
Use undo irf member renumber to restore the previous IRF member ID of the device.
Syntax
irf member member-id renumber new-member-id
undo irf member member-id renumber
Default
In standalone mode, the device has no member ID.
In IRF mode, the device by default uses the member ID set by using the irf member command.
Views
System view
Predefined user roles
network-admin
Parameters
member-id: Specifies the current ID of an IRF member device. The ID can only be 1 or 2.

17
new-member-id: Assigns a new ID to the IRF member device. The value range for this argument is 1 to 4.
However, the assigned IRF member ID must be 1 or 2. If you use 3 or 4, the 7900 IRF fabric cannot be
set up.
Usage guidelines
CAUTION:
In IRF mode, an IRF member ID change can invalidate member ID-related settings, including interface
and file path settings, and cause data loss. Be sure you fully understand its impact on your live network.
The new IRF member ID, including the one set by using the undo irf member renumber command, takes
effect after you reboot the member device.
To cancel the change before you reboot the member device, use the undo irf member renumber
command. In the command, set the new member ID to be the same as the old member ID.
To set the member ID of a device in standalone mode, use the irf member command.
Examples
# Change the member ID of an IRF member from 1 to 2.
<Sysname> system-view
[Sysname] irf member 1 renumber 2
Warning: Renumbering the member ID may result in configuration change or loss.
Continue?[Y/N]y
# Before rebooting the device, cancel the change in the preceding example.
[Sysname] undo irf member 1 renumber
Warning: Renumbering the member ID may result in configuration change or loss.
Continue?[Y/N]y
If you reboot the device after executing the irf member 1 renumber 2 command, the device member ID
changes to 2 at system reboot. Using undo irf member 1 renumber cannot restore the member ID to 1.
Related commands
irf member
irf priority
Use irf priority to assign an IRF member priority to a device in standalone mode.
Use undo irf priority to restore the default.
Syntax
irf priority priority
undo irf priority
Default
IRF member priority is 1.
Views
System view
Predefined user roles
network-admin