H3C S7500 Series User manual

Operation Manual – Cluster
H3C S7500 Series Ethernet Switches Table of Contents
i
Table of Contents
Chapter 1 Cluster...........................................................................................................................1-1
1.1 Cluster Overview................................................................................................................1-1
1.1.1 Introduction to HGMP V2........................................................................................1-1
1.1.2 Introduction to NDP.................................................................................................1-2
1.1.3 Introduction to NTDP............................................................................................... 1-3
1.1.4 Introduction to Cluster.............................................................................................1-4
1.1.5 Switch Roles in the Cluster.....................................................................................1-5
1.2 Management Device Configuration...................................................................................1-6
1.2.1 Management Device Configuration Task List.........................................................1-6
1.2.2 Enabling NDP Globally and for Specific Ports........................................................1-7
1.2.3 Configuring NDP-Related Parameters....................................................................1-7
1.2.4 Enabling NTDP Globally and for Specific Ports...................................................... 1-7
1.2.5 Configuring NTDP-Related Parameters..................................................................1-8
1.2.6 Enabling the Cluster Function................................................................................. 1-8
1.2.7 Configuring Cluster Parameters.............................................................................. 1-9
1.2.8 Configuring Interaction for the Cluster.................................................................. 1-10
1.3 Member Device Configuration.........................................................................................1-11
1.3.1 Member Device Configuration Task List...............................................................1-11
1.3.2 Enabling NDP Globally and for Specific Ports......................................................1-11
1.3.3 Enabling NTDP Globally and for Specific Ports.................................................... 1-11
1.3.4 Configure Member Devices to Access FTP/TFTP Server of the Cluster..............1-12
1.4 Intra-Cluster Configuration...............................................................................................1-12
1.5 Displaying and Maintaining a Cluster .............................................................................. 1-13
1.6 Cluster Configuration Example........................................................................................1-13
1.6.1 Cluster Configuration Example ............................................................................. 1-13

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Chapter 1 Cluster
When configuring cluster, go to these sections for information you are interested in:
zCluster Overview
zManagement Device Configuration
zMember Device Configuration
zIntra-Cluster Configuration
zDisplaying and Maintaining a Cluster
zCluster Configuration Example
1.1 Cluster Overview
1.1.1 Introduction to HGMP V2
A cluster is implemented through Huawei group management protocol (HGMP V2). By
employing HGMP V2, a network administrator can manage multiple switches using the
public IP address of a switch known as a management device. The switches under the
management are member devices. The management device, along with the member
devices, forms a cluster. Normally, a public IP address is not assigned to a member
device. Management and maintenance operations intended for the member devices in
a cluster are redirected by the management device. Figure 1-1 illustrates a typical
cluster implementation.
Network Management Station
69.110.1.100
Network
69.110
Management Device
Member Device
Member Device
Member Device
.1.1
r Figure 1-1 Diagram for cluste
HGMP V2 offers the following advantages:

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zSimplifying the procedures to configure multiple switches. After assigning a public
IP address to the management device, you can configure/manage a specific
member device on the management device instead of logging in to it in advance.
zFunctions of topology discovery and display, which assist network monitoring and
debugging
zSoftware upgrading and parameter configuring can be performed simultaneously
on multiple switches.
zFree of topology and distance limitations
zSaving IP address resource
HGMP V2 is comprised of the following three protocols:
zNeighbor Discovery Protocol (NDP): HGMP V2 implements NDP to discover the
information about the directly connected neighbor devices, including device type,
software/hardware version, connecting port and so on. The information including
device ID, port mode (duplex or half duplex), product version, and Boot ROM
version can also be given.
zNeighbor Topology Discovery Protocol (NTDP): HGMP V2 implements NTDP to
collect the information about the network topology, including the device
connections and the device information in the network. The hop range for topology
discovery can be adjusted manually.
zCluster management protocol: The cluster management protocol provides the
member recognition and member management function. It can also perform
large-scaled device management together with the network administrator.
Member recognition means that the management device recognizes each
member in the cluster through locating each member and then distributes the
configuration and management commands to the members. Member
management means to manage the following events through the management
device, including adding a member, removing a member, and the member’s
authentication on the management device. Member management also manages
the cluster parameters including interval of sending handshake packets,
management VLAN of the cluster, public FTP server of the cluster.
Cluster-related configurations are described in the following sections.
1.1.2 Introduction to NDP
NDP is the protocol for discovering the information about the adjacent nodes. NDP
operates on the data link layer, so it supports different network layer protocols.
NDP is used to discover the information about directly connected neighbors, including
the device type, software/hardware version, and connecting port of the adjacent
devices. It can also provide the information concerning device ID, port simplex/duplex
status, product version, and Boot ROM version.

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An NDP-enabled device maintains an NDP information table. Each entry in an NDP
table ages with time. You can also clear the current NDP information manually to have
adjacent information collected again.
An NDP-enabled device broadcasts NDP packets regularly to all active ports. An NDP
packet carries the holdtime field, which indicates the period for the receiving devices to
keep the NDP data. Receiving devices store only the information carried in the received
NDP packets rather than forward them. The corresponding data entry in the NDP table
is updated when the received information is different from the existing one. Otherwise,
only the holdtime of the corresponding entry is updated.
1.1.3 Introduction to NTDP
NTDP is a protocol for network topology information collection. NTDP provides the
information about the devices that can be added to clusters and collects the topology
information within the specified hops for cluster management.
Based on the NDP information table created by NDP, NTDP transmits and forwards
NTDP topology collection requests to collect the NDP information and neighboring
connection information of each device in a specific network range for the management
device or the network administrator to implement required functions.
Upon detecting a change occurred on a neighbor, a member device informs the
management device of the change through handshake packets. The management
device then collects the specified topology information through NTDP. Such a
mechanism enables topology changes to be tracked in time.
Note:
As for NTDP implementing, you need to perform configurations on the management
device, the member devices, and the candidate devices as follows:
zOn the management device, enable NTDP both globally and for specific ports, and
configure the NTDP settings.
zOn each member device and candidate device, enable NTDP both globally and for
specific ports. As member devices and candidate devices adopt the NTDP settings
configured for the management device, NTDP setting configurations are not
needed.
zNTDP takes effect in the management VLAN only. S7500 series Ethernet switches
take VLAN 1 as the management VLAN, that is, the NTDP function of the S7500
series takes effect in VLAN 1 only.

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1.1.4 Introduction to Cluster
I. Introduction to cluster configuration
A cluster has one (and only one) management device. Note the following points when
creating a cluster:
zYou need to designate a management device first. The management device of a
cluster is the portal of the cluster. That is, any operations performed in external
networks and intended for the member devices of a cluster, such as accessing,
configuring, managing, and monitoring, can only be implemented through the
management device.
zThe management device of a cluster recognizes and controls all the member
devices in the cluster, no matter where they are located in the network or how they
are connected.
zThe management device collects topology information about all the member and
candidate devices to provide useful information for users to establish a cluster.
zThe management device manages and monitors the devices in the cluster by
collecting and processing NDP/NTDP packets. NDP/NTDP packets contain
network topology information.
All the above-mentioned operations need the support of the cluster function.
Note:
You need to enable the cluster function and configure cluster parameters on a
management device. However, you only need to enable the cluster function on the
member devices and candidate devices.
II. Introduction to function of cluster
Cluster provides the function of batch management for the switches in the network. It
provides external management and maintenance applications, including SNMP,
command line, program and data loading, log reporting and alarm reporting. These
applications can be divided into internal-to-external applications and
external-to-internal applications. All the applications are processed according to the
following procedures:
zThe communication between the management device and member device in the
cluster is implemented through packet interaction in the management VLAN.
zThe communication between the cluster and the external server is implemented
by the Layer 3 interface of the cluster management VLAN.
zWhen the member device in the cluster communicates with the external server,
the member device transmits the data to the management device first, and then

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the management device transmits the data to the external server. When the
management program running on the external server manages the member
device, the external server transmits the protocol packets to the management
device first, and then the management device forwards the protocol packets to the
member device.
You can configure public FTP servers, TFTP servers, logging hosts and SNMP hosts
for the whole cluster. The management device in the cluster is the default public FTP
server of the cluster when the public FTPserver of the cluster is not configured. Cluster,
together with the network management system, can perform large-scaled device
management.
Note:
The S7500 series manage the cluster with VLAN 1, which serves as the management
VLAN in the cluster. You are required to configure the IP address of the Layer 3 virtual
interface of the management VLAN before setting up a cluster. Otherwise, the cluster
cannot be set up successfully. After the cluster is set up, you are not allowed to modify
the IP address of the management VLAN interface.
1.1.5 Switch Roles in the Cluster
According to their functions and status in a cluster, switches in the cluster play different
roles. You can specify the role a switch plays. A switch also changes its role according
to specific rules.
The following three switch roles exist in a cluster: management device, member device,
and candidate device.
Table 1-1 Switch roles in the cluster
Role Configuration Description
Management
device
zConfigured with a
public IP address.
zReceive
management
commands that a
user sends
through the public
network and
process the
received
commands
zProvide management interfaces for all
switches in the cluster
zManage member devices by redirecting
commands, that is, forward the
commands to the intended member
devices for processing
zProvide the following functions,
including neighbor discovery, topology
information collection, cluster
management, and cluster state
maintenance, and support all types of
FTP servers and SNMP host proxies

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Role Configuration Description
Member
device
Normally, a member
device is not
configured with a
public IP address
zMember in the cluster
zNeighbor discovery, being managed by
the management device, running
commands forwarded by proxies, and
failure/log reporting
Candidate
device
Normally, a candidate
device is not
configured with a
public IP address
Acandidate device is a switch that does not
belong to any cluster, although it can be
added to a cluster
The switch roles are switched according to the following rules:
Candidate Switch
Designates as a
management switch
Cancels the
designated
Management
switch
Joins a
cluster
Member switchManagement switch
Leaves a
cluster
s Figure 1-2 Role switching role
zEach cluster has one (and only one) management device. A management device
collects NDP/NTDP information to discover and determine candidate devices,
which can be then added into the cluster through manual configurations.
zA candidate device becomes a member device after being added to a cluster.
zA member device becomes a candidate device after being removed from the
cluster.
1.2 Management Device Configuration
1.2.1 Management Device Configuration Task List
Complete the following tasks to configure the management device:
Task Remarks
Enabling NDP Globally and for Specific Ports Required
Configuring NDP-Related Parameters Required
Enabling NTDP Globally and for Specific Ports Required

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Task Remarks
Configuring NTDP-Related Parameters Required
Enabling the Cluster Function Required
Configuring Cluster Parameters Required
Configuring Interaction for the Cluster Required
1.2.2 Enabling NDP Globally and for Specific Ports
Follow these steps to enable NDP globally and for a specific port:
To do… Use the command… Remarks
Enter system view system-view —
Enable NDP globally ndp enable Required
By default, NDP is
enabled globally
In system view ndp enable interface
port-list
Enter
Ethernet
port view
interface interface-type
interface-number
Enable
NDP for
the
specified
Ethernet
ports
In
Ether
net
port
view Enable NDP
on the port ndp enable
You must choose one
of them
By default, NDP is
enabled on the port
1.2.3 Configuring NDP-Related Parameters
Follow these steps to configure NDP-related parameters:
To do… Use the command… Remarks
Enter system view system-view —
Configure the
holdtime of NDP
information
ndp timer aging
aging-in-seconds
Optional
By default, the aging time of NDP
packets is 180 seconds
Configure the
interval to send NDP
packets
ndp timer hello
seconds
Optional
By default, the interval of sending
NDP packets is 60 seconds
1.2.4 Enabling NTDP Globally and for Specific Ports
Follow these steps to enable NTDP globally and for specific ports:

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To do… Use the command… Remarks
Enter system view system-view —
Enable NTDP globally ntdp enable Required
Enter Ethernet port view interface interface-type
interface-number —
Enable NTDP for the
Ethernet port ntdp enable Required
1.2.5 Configuring NTDP-Related Parameters
Follow these steps to configure NTDP parameters:
To do… Use the
command… Remarks
Enter system view system-view —
Configure the range within
which topology information
is to be collected
ntdp hop
hop-value
Optional
By default, the hop range for
topology collection is three hops
Configure the hop delay to
forward topology-collection
requests
ntdp timer
hop-delay time
Optional
By default, the delay of the device
is 200 ms
Configure the port delay to
forward topology collection
requests
ntdp timer
port-delay time Optional
By default, the port delay is 20 ms
Configure the interval to
collect topology information
ntdp timer
interval-in-minut
es
Optional
By default, the interval of topology
collection is 0.
Quit system view quit —
Start topology information
collection ntdp explore Optional
1.2.6 Enabling the Cluster Function
Follow these steps to enable the cluster function:

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To do… Use the command… Remarks
Enter system view system-view —
Enable the cluster
function globally cluster enable Optional
By default, the cluster function is
enabled
1.2.7 Configuring Cluster Parameters
I. Creating a cluster and configuring cluster parameters manually
Follow these steps to configure cluster parameters manually:
To do… Use the command… Remarks
Enter system view system-view —
Enter VLAN interface view interface Vlan-interface
vlan-id
Required
You are required to
configure the IP address
of the Layer 3 virtual
interface of VLAN 1
before you set up a
cluster. Otherwise, the
cluster cannot be set up.
Configure the IP address
of the VLAN interface ip address ip-address
{ mask | mask-length } Required
Enter cluster view cluster —
Configure an IP address
pool for the cluster
ip-pool
administrator-ip-address
{ip-mask |
ip-mask-length }
Required
Build a cluster build name
Optional
The name argument
indicates the name to be
assigned.
Configure the holdtime for
a switch holdtime seconds Optional
By default, the holdtime is
60 seconds
Set the interval to send
handshake packets timer interval
Optional
By default, the interval to
send handshake packets
is 10 seconds
Quit cluster view quit —

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II. Building a cluster automatically
Follow these steps to enable the cluster function automatically:
To do… Use the command… Remarks
Enter system view system-view —
Enter VLAN interface view interface Vlan-interface
vlan-id
Required
You are required to
configure the IP address
of the Layer 3 virtual
interface of VLAN 1
before you set up a
cluster. Otherwise, the
cluster cannot be set up.
Configure the IP address
of the VLAN interface ip address ip-address
{ mask | mask-length } Required
Enter cluster view cluster —
Configure the rang e of
the IP addresses of the
cluster
ip-pool
administrator-ip-address
{ip-mask |
ip-mask-length }
Required
Build a cluster
automatically auto-build [ recover ]
Optional
You can build clusters
according to
corresponding prompts
Note:
zAfter a cluster is built automatically, ACL 3998 and ACL 3999 will be generated
automatically.
zAfter a cluster is built automatically, ACL 3998 and ACL 3999 can neither be
configured/modified nor removed.
1.2.8 Configuring Interaction for the Cluster
Follow these steps to configure interaction for the cluster:
To do… Use the command… Remarks
Enter system view system-view —
Enter cluster view cluster Required
Configure the public FTP server for the
cluster ftp-server ip-address Optional

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To do… Use the command… Remarks
Configure the TFTP server for the
cluster tftp-server ip-address Optional
Configure the logging host for the
cluster logging-host
ip-address Optional
Configure the SNMP host for the cluster snmp-host ip-address Optional
1.3 Member Device Configuration
1.3.1 Member Device Configuration Task List
Complete the following tasks to configure a member device:
Task Remarks
Enabling NDP Globally and for Specific Ports Required
Enabling NTDP Globally and for Specific Ports Required
Configure Member Devices toAccess FTP/TFTP Server of
the Cluster Required
1.3.2 Enabling NDP Globally and for Specific Ports
Follow these steps to enable NDP globally and for specific ports:
To do… Use the
command… Remarks
Enter system view system-view —
Enable NDP globally ndp enable Required
In system view ndp enable
interface port-list
Enter
Ethernet
port view
interface
interface-type
interface-number
Enable
NDP for
specified
ports
In
Ethernet
port
view Enable NDP
on the port ndp enable
Required
You can choose to
enable NDP in system
view or in Ethernet port
view
1.3.3 Enabling NTDP Globally and for Specific Ports
Follow these steps to enable NTDP globally and for specific ports:

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To do… Use the command… Remarks
Enter system view system-view —
Enable NTDP globally ntdp enable Required
Enter Ethernet port view interface interface-type
interface-number —
Enable NTDP for the port ntdp enable Required
1.3.4 Configure Member Devices to Access FTP/TFTP Server of the Cluster
Perform the following configuration on a member device:
To do… Use the command… Remarks
Access the public FTP
server of the cluster ftp cluster Optional
Available in user view
Download files from the
public TFTP server of the
cluster
tftp cluster get
source-file
[destination-file ]
Optional
Available in user view
Upload files to the public
TFTP server of the cluster
tftp cluster put
source-file
[destination-file ]
Optional
Available in user view
1.4 Intra-Cluster Configuration
Follow these steps to configure a cluster:
To do… Use the command… Remarks
Enter system view system-view —
Enter cluster view cluster —
Add a candidate device to
a cluster
add-member
[ member-number ]
mac-address H-H-H
[password password ]
Optional
Remove a member device
from the cluster delete-member
member-number Optional
Reboot a specified
member device
reboot member
{member-number |
mac-address H-H-H }
[ eraseflash ]
Optional
Return to system view quit —
Return to user view quit —

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To do… Use the command… Remarks
Switch between the
management device view
and a member device
view
cluster switch-to
{ member-number |
mac-address H-H-H |
administrator }
Optional
Switch between the
management device view
and the member device
view
1.5 Displaying and Maintaining a Cluster
To do… Use the command… Remarks
Display the global NDP
configuration (including the
interval to send NDP
packets and the holdtime)
display ndp
Display the information
about the neighbors
discovered by NDP and
connected to specified ports
display ndp interface port-list
Display the global NTDP
information display ntdp
Display device information
collected through NTDP display ntdp device-list
[ verbose ]
Display state and statistics
information about a cluster display cluster
Display the information
about the candidate devices
of a cluster
display cluster candidates
[mac-address H-H-H | verbose ]
Display the information
about the cluster members display cluster members
[ member-number | verbose ]
Optional
Available in
any view
Clear the NDP statistics on
a port reset ndp statistics [interface port-list ]—
1.6 Cluster Configuration Example
1.6.1 Cluster Configuration Example
I. Network requirements
Three switches form a cluster, in which:
zThe management device is an S7500 switch.
zThe rest are member devices.

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The S7500 switch manages other two member devices as the management device.
The detailed information about the cluster is as follows.
zThe two member devices are connected to GigabitEthernet 2/0/2 and
GigabitEthernet 2/0/3 of the management device.
zThe management device is connected to the external network through
GigabitEthernet 2/0/1.
zGigabitEthernet 2/0/1 belongs to VLAN 1, whose interface IP address is
163.172.55.1.
zAll the devices in the cluster use the same FTP server and TFTP server.
zThe FTP server and TFTP server share one IP address: 63.172.55.1.
zThe SNMP site and log host share one IP address: 69.172.55.4.
II. Network diagram
集群
Internet
GE2/0/1
GE2/0/3 GE2/0/2
Eth1/1 Eth1/1
69.172.55.4
SNMP/loggi
FTP/TFTP Server
63.172.55.1
163.172.55.1
IP address of
VLAN-interface 2
Management
device
MAC address of the
member device
MAC:000f.e201.0011 MAC:000f.e201.0012
MAC address of the
member device
ng host(NMS)
n Figure 1-3 Network diagram for HGMP cluster configuratio
III. Configuration procedure
1) Configure the member devices (taking one member as an example)
# Enable NDP globally and for Ethernet 1/1.
<H3C> system-view
[H3C] ndp enable
[H3C] interface Ethernet 1/1
[H3C-Ethernet1/1] ndp enable
[H3C-Ethernet1/1] quit
# Enable NTDP globally and for Ethernet 1/1.

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[H3C] ntdp enable
[H3C] interface Ethernet 1/1
[H3C-Ethernet1/1] ntdp enable
[H3C-Ethernet1/1] quit
# Enable the cluster function.
[H3C] cluster enable
2) Configure the management device
# Configure the IP address of the management VLAN (the S7500 series take VLAN 1
as the default VLAN).
<H3C> system-view
[H3C] interface Vlan-interface 1
[H3C-Vlan-interface1] ip address 163.172.55.1
[H3C-Vlan-interface1] quit
# Enable NDP globally and on ports GE 2/0/2 and GE 2/0/3.
[H3C] ndp enable
[H3C] interface GigabitEthernet 2/0/2
[H3C-GigabitEthernet2/0/2] ndp enable
[H3C-GigabitEthernet2/0/2] interface GigabitEthernet 2/0/3
[H3C-GigabitEthernet2/0/3] ndp enable
[H3C-GigabitEthernet2/0/3] quit
# Configure the holdtime of NDP information to be 200 seconds.
[H3C] ndp timer aging 200
# Configure the interval to send NDP packets to be 70 seconds.
[H3C] ndp timer hello 70
# Enable NTDP globally and for GE 2/0/2 and GE 2/0/3.
[H3C] ntdp enable
[H3C] interface GigabitEthernet 2/0/2
[H3C-GigabitEthernet1/0/2] ntdp enable
[H3C-GigabitEthernet1/0/2] interface GigabitEthernet 2/0/3
[H3C-GigabitEthernet1/0/3] ntdp enable
[H3C-GigabitEthernet1/0/3] quit
# Configure the hop count to collect topology to be 2.
[H3C] ntdp hop 2
# Configure the delay time for topology-collection requests to be forwarded on member
devices to be 150 ms.
[H3C] ntdp timer hop-delay 150
# Configure the delay time for topology-collection requests to be forwarded through the
ports of member devices to be 15 ms.

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[H3C] ntdp timer port-delay 15
# Configure the interval to collect topology information to be 3 minutes.
[H3C] ntdp timer 3
# Enable the cluster function.
[H3C] cluster enable
# Enter cluster view.
[H3C] cluster
[H3C-cluster]
# Configure an IP address pool for the cluster. The IP address pool contains eight IP
addresses, starting from 172.16.0.1.
[H3C-cluster] ip-pool 172.16.0.1 255.255.255.248
# Specify a name for the cluster and create the cluster.
[H3C-cluster] build aaa
[aaa_0.H3C-cluster]
# Add the attached two switches to the cluster.
[aaa_0.H3C-cluster] add-member 1 mac-address 00e0-fc01-0011
[aaa_0.H3C-cluster] add-member 17 mac-address 00e0-fc01-0012
# Configure the holdtime of the member device information to be 100 seconds.
[aaa_0.H3C-cluster] holdtime 100
# Configure the interval to send handshake packets to be 10 seconds.
[aaa_0.H3C-cluster] timer 10
# Configure the FTP Server, TFTP Server, Log host and SNMP host for the cluster.
[aaa_0.H3C-cluster] ftp-server 63.172.55.1
[aaa_0.H3C-cluster] tftp-server 63.172.55.1
[aaa_0.H3C-cluster] logging-host 69.172.55.4
[aaa_0.H3C-cluster] snmp-host 69.172.55.4
3) Configure the member devices (taking one member as an example)
Add the devices connected to the management device into the cluster and perform the
following configuration on the member device.
# Connect the member device to the public remote FTP server of the cluster.
<aaa_1.H3C> ftp cluster
# Download the file named aaa.txt from the public TFTP server to the member device.
<aaa_1.H3C> tftp cluster get aaa.txt
# Upload the file named bbb.txt from the member device to the public TFTP server of
the cluster.

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<aaa_1.H3C> tftp cluster put bbb.txt
Note:
zUpon the completion of the above configurations, you can execute the cluster
switch-to { member-number | mac-address H-H-H } command on the
management device to switch to member device view to maintain and manage a
member device. You can then execute the cluster switch-to administrator
command to resume the management device view.
zYou can also reboot a member device by executing the reboot member
{member-number |mac-address H-H-H }[ eraseflash ] command on the
management device. For detailed information about these configurations, refer to
the preceding description in this chapter.
zAfter the configuration above, on the SNMP host you can receive logs and SNMP
trap messages of all the cluster members.