H3C S3100-52P User manual

Operation Manual – Stack-Cluster
H3C S3100-52P Ethernet Switch Table of Contents
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Table of Contents
Chapter 1 Stack .............................................................................................................................1-1
1.1 Stack Function Overview...................................................................................................1-1
1.1.1 The Main Switch of a Stack.....................................................................................1-1
1.1.2 The Slave Switches of a Stack................................................................................1-1
1.1.3 Creating a Stack......................................................................................................1-1
1.2 Main Switch Configuration.................................................................................................1-2
1.2.1 Configuring the IP Address Pool and Creating the Stack.......................................1-2
1.2.2 Switching to Slave Switch View ..............................................................................1-3
1.2.3 Stack-Port Function Configuration..........................................................................1-3
1.3 Slave Switch Configuration................................................................................................1-4
1.4 Displaying and Debugging a Stack....................................................................................1-4
1.5 Stack Configuration Example ............................................................................................1-5
Chapter 2 Cluster...........................................................................................................................2-1
2.1 Cluster Overview................................................................................................................2-1
2.1.1 Introduction to HGMP..............................................................................................2-1
2.1.2 Roles in a Cluster....................................................................................................2-2
2.1.3 How a Cluster Works ..............................................................................................2-4
2.2 Cluster Configuration Task List........................................................................................2-10
2.2.1 Configuring the Management Device....................................................................2-11
2.2.2 Configuring Member Devices................................................................................2-16
2.2.3 Managing a Cluster through the Management Device..........................................2-18
2.2.4 Configuring the Enhanced Cluster Features.........................................................2-19
2.3 Displaying and Maintaining Cluster Configuration...........................................................2-22
2.4 Cluster Configuration Examples......................................................................................2-22
2.4.1 Basic Cluster Configuration Example....................................................................2-22
2.4.2 Enhanced Cluster Feature Configuration Example...............................................2-26

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Chapter 1 Stack
1.1 Stack Function Overview
A stack is a management domain formed by a group of Ethernet switches
interconnected through their stack ports. A stack contains a main switch and multiple
slave switches.
Logically, you can consider a stack a single device and manage all the switches in a
stack through the main switch.
1.1.1 The Main Switch of a Stack
You can configure multiple Ethernet switches interconnected through their stack ports
to form a stack by performing configurations on one of the switches. In this case, the
switch becomes the main switch of the stack.
You can perform the following operations on a main switch:
zConfiguring an IP address pool for the stack
zCreating the stack
zSwitching to slave switch view
Before creating a stack, you need to configure an IP address pool for the stack on the
main switch. When adding a switch to a stack, the main switch picks an IPaddress from
the IP address pool and assigns the IP address to it automatically.
After a stack is created, the main switch automatically adds the switches that
connected to its stack ports to the stack. If a stack port connection is disconnected, the
corresponding slave switch quits the stack automatically.
1.1.2 The Slave Switches of a Stack
All the switches in a stack except the main switch are slave switches.
You can configure a slave switch in a stack on the main switch.
1.1.3 Creating a Stack
The following are the phases undergone when a stack is created.
zConnect the intended main switch and slave switches through stack modules and
dedicated stack cables. (Refer to H3C S3100-52P Ethernet Switch Installation
Manual for the information about stack modules and stack cables.)
zConfigure the IP address pool for the stack and enable the stack function. The
main switch then automatically adds the switches connected to its stack ports to
the stack.

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zWhen adding a switch joins in a stack, the main switchautomatically assigns an IP
address to it.
zThe main switch automatically adds any switches that are newly connected to the
stack through their stack ports to the stack.
1.2 Main Switch Configuration
The main switch configuration includes:
zConfiguring the IP Address Pool and Creating the Stack
zSwitching to Slave Switch View
1.2.1 Configuring the IP Address Pool and Creating the Stack
Table 1-1 Configure the IP address pool and create the stack
Operation Command Description
Enter system view system-view —
Configure an IP
address pool for a
stack
stacking ip-pool
from-ip-address
ip-address-number
[ip-mask ]
Required
from-ip-address: Start address of the IP
address pool.
ip-address-number: Number of the IP
addresses in the IP addresses pool. A
pool contains 16 addresses by default.
ip-mask: Mask of the IP address pool.
By default, the IP addresses pool is not
configured.
Create a stack stacking enable Required
Note:
Remove the IP address configured for the existing Layer 3 interface first if you want to
cancel the stack-related configuration, otherwise, IP address conflicts may occur.
As for the stack-related configurations performed on a main switch, note that:
zAfter a stack is created, the main switch automatically adds the switches
connected to its stack ports to the stack.
zIf a stack port connection is disconnected, the corresponding slave switch quits
the stack automatically.
zThe IP address pool of an existing stack cannot be modified.
zTo add a switch to a stack successfully, make sure the IP address pool contains at
least one unoccupied IP address.

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zMake sure the IP addresses in the IP address pool of a stack are successive so
that they can be assigned successively. For example, the IP addresses in an IP
address pool with its start IP address something like 223.255.255.254 are not
successive. In this case, errors may occur when adding a switch to the stack.
zIP addresses in the IP address pool of a stack must be of the same network
segment. For example, the 1.1.255.254 is not a qualified start address for a stack
IP address pool.
zIf the IP address of the management VLAN interface of the main switch(or a slave
switch) is not of the same network segment as that of the stack address pool, the
main switch (or the slave switch) automatically removes the existing IP address
and picks a new one from the stack address pool as its IP address.
zSince both stack and cluster use the management VLAN and only one VLAN
interface is available on the S3100-52P switch, stack and cluster must share the
same management VLAN if you want to configure stack within a cluster.
1.2.2 Switching to Slave Switch View
After creating a stack, you can switch to slave switch view from the main switch to
configure slave switches.
Table 1-2 Switch to slave switch view
Operation Command Description
Switch to slave
switch view stacking number
Required
Number: Number of the slave switch to
switch to.
This command can be used to switch from
user view of the main switch to user view of
a slave switch. The user level remains the
same while switching.
You can quit slave switch view after slave switch configuration.
Table 1-3 Quit slave switch view
Operation Command Description
Quit slave switch
view quit You can quit slave switch view only by
executing this command in user view of a
slave switch.
1.2.3 Stack-Port Function Configuration
I. Introduction to the Stack-Port Function
If you enable the stack function on a stack-supporting device, the device will send

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join-in requests to the connected stack ports of all the switches connected with the
device. This may cause switches not expecting to join in the stack to join in the stack
automatically, affecting network stability.
You can configure the stack-port function on the stack ports that are connected with
other switches to choose whether to send join-in requests to the switches, so as to
prevent the switches that do not belong to the local stack from joining in.
II. Stack-Port Function Configuration
Follow these steps to configure the stack port function:
To do… Use the command… Remarks
Enter system view system-view —
Enter port view interface interface-type
interface-number —
Enable the
stack-port function
on the stack port stack-port enable
Required
Enabled by default.
After a switch joins in a stack or
becomes the master switch of a
stack, the switch will
send/forward stack join-in
requests through this stack port.
1.3 Slave Switch Configuration
Just make sure the slave switch is connected to the main switch through the stack ports.
No configuration is needed.
1.4 Displaying and Debugging a Stack
Use the display command to display the information about a stack. The display
command can be executed in any view.

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Table 1-4 Display and maintain stack configurations
Operation Command Description
Display the stack
status information
on the main switch
display stacking
[ members ]
Optional
The display command can be executed
in any view.
When being executed with the members
keyword not specified, this command
displays the main switch and the number
of switches in the stack.
When being executed with the members
keyword specified, this command
displays the member information of the
stack, including stack number , device
name, MAC addresses and status of the
main switch/slave switches.
Display the stack
status information
on a slave switch display stacking
Optional
The display command can be executed
in any view.
The displayed information indicates that
the local switch is a slave switch. The
information such as stack number of the
local switch, and the MAC address of the
main switch in the stack is also
displayed.
1.5 Stack Configuration Example
I. Network requirements
Connect Switch A, Switch B and Switch C with each other through their stack ports to
form a stack, in which Switch A acts as the main switch, while Switch B and C act as
slave switches.
Configure Switch B and Switch C through Switch A.

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II. Network diagram
Figure 1-1 Network diagram for stack configuration
III. Configuration procedure
# Configure the IP address pool for the stack on SwitchA.
<Sysname> system-view
[Sysname] stacking ip-pool 129.10.1.15 3
# Create the stack on switch A.
[Sysname] stacking enable
[stack_0.Sysname] quit
<stack_0.Sysname>
# Display the information about the stack on switch A.
<stack_0.Sysname> display stacking
Main device for stack.
Total members:3
Management-vlan:1(default vlan)
# Display the information about the stack members on switchA.
<stack_0.Sysname> display stacking members
Member number: 0
Name:stack_0.Sysname
Device: S3100-52P
MAC Address:000f-e20f-c43a
Member status:Admin
IP: 129.10.1.15 /16

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Member number: 1
Name:stack_1.Sysname
Device: S3100-52P
MAC Address: 000f-e200-3130
Member status:Up
IP: 129.10.1.16/16
Member number: 2
Name:stack_2.Sysname
Device: S3100-52P
MAC Address: 000f-e200-3135
Member status:Up
IP: 129.10.1.17/16
# Switch to Switch B (a slave switch).
<stack_0.Sysname> stacking 1
<stack_1.Sysname>
# Display the information about the stack on switch B.
<stack_1.Sysname> display stacking
Slave device for stack.
Member number:1
Management-vlan:1(default vlan)
Main device mac address: 000f-e20f-c43a
# Switch back to Switch A.
<stack_1. H3C> quit
<stack_0.Sysname>
# Switch to Switch C (a slave switch).
<stack_0.Sysname> stacking 2
<stack_2.Sysname>
# Switch back to Switch A.
<stack_2.Sysname> quit
<stack_0.Sysname>

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Chapter 2 Cluster
When configuring cluster, go to these sections for information you are interested in:
zCluster Overview
zCluster Configuration Task List
zDisplaying and Maintaining Cluster Configuration
zCluster Configuration Examples
2.1 Cluster Overview
2.1.1 Introduction to HGMP
Acluster contains a group of switches. Through cluster management, you can manage
multiple geographically dispersed in a centralized way.
Cluster management is implemented through Huawei Group Management Protocol
(HGMP). HGMP version 2 (HGMPv2) is used at present.
A switch in a cluster plays one of the following three roles:
zManagement device
zMember device
zCandidate device
A cluster comprises of a management device and multiple member devices. To
manage the devices in a cluster, you need only to configure an external IP address for
the management switch. Cluster management enables you to configure and manage
remote devices in batches, reducing the workload of the network configuration.
Normally, there is no need to configure external IP addresses for member devices.
Figure 2-1 illustrates a cluster implementation.

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Figure 2-1 A cluster implementation
HGMP V2 has the following advantages:
zIt eases the configuration and management of multiple switches: You just need to
configure a public IP address for the management device instead of for all the
devices in the cluster; and then you can configure and manage all the member
devices through the management device without the need to log onto them one by
one.
zIt provides the topology discovery and display function, which assists in monitoring
and maintaining the network.
zIt allows you to configure and upgrade multiple switches at the same time.
zIt enables you to manage your remotely devices conveniently regardless of
network topology and physical distance.
zIt saves IP address resource.
2.1.2 Roles in a Cluster
The switches in a cluster play different roles according to their functions and status. You
can specify the role a switch plays. A switch in a cluster can also switch to other roles
under specific conditions.
As mentioned above, the three cluster roles are management device, member device,
and candidate device.