Cisco Catalyst 3560CX Series Manual

Cisco Catalyst 3560CX Series Manual

Managing switch stacks
Hide thumbs Also See for Catalyst 3560CX Series:
Table of Contents

Advertisement

Managing Switch Stacks

Prerequisites for Switch Stacks

Restrictions for Switch Stacks

There are no restrictions with Horizontal Stacking on Catalyst 3560cx.

Information About Switch Stacks

Horizontal Stacking

The Catalyst 3560CX series switches supporting 10G SFP+ uplink ports and MGig ports can be part of
horizontal stacking. We can use SFP+ with the optical cables and copper cables on the MGig ports to connect
boxes placed at different location to form a stack, where the compact boxes are placed in different floors or
buildings. We can form half-ring or full-ring based on need, and remaining uplink ports will continue to work
as network ports.
When we convert a network port to stack port, it will continue to work as network port without any impact
to current running configuration until next reload of switch. All current configurations of that particular
network port will be lost after reload of switch once port comes up as Stack port.
When we convert a stack port back to network port it will continue to work as stack port until next reload of
switch. After reload port comes up as network port with default configuration.
Prerequisites for Switch Stacks, on page 1
Restrictions for Switch Stacks, on page 1
Information About Switch Stacks, on page 1
Managing Switch Stacks
1

Advertisement

Table of Contents
loading

Summary of Contents for Cisco Catalyst 3560CX Series

  • Page 1 Information About Switch Stacks Horizontal Stacking The Catalyst 3560CX series switches supporting 10G SFP+ uplink ports and MGig ports can be part of horizontal stacking. We can use SFP+ with the optical cables and copper cables on the MGig ports to connect boxes placed at different location to form a stack, where the compact boxes are placed in different floors or buildings.
  • Page 2 Managing Switch Stacks Switch Stack Membership Note When uplink ports are working as stack ports, those particular uplink interfaces (ex: Te1/0/1) will not be listed in any show command or will not be available under any config command, unlike any other network port. They will be made available only after reload of the switch once ports are converted back to network.
  • Page 3 Managing Switch Stacks Changes to Switch Stack Membership Figure 2: Adding a Standalone Switch to a Switch Stack Changes to Switch Stack Membership If you replace a stack member with an identical model, the new switch functions with exactly the same configuration as the replaced switch, assuming that the new switch (referred to as the provisioned switch) is using the same member number as the replaced switch.
  • Page 4 Managing Switch Stacks Stack Member Numbers Note Make sure that you power off the switches that you add to or remove from the switch stack. After adding or removing stack members, make sure that the switch stack is operating at full bandwidth . Press the Mode button on a stack member until the Stack mode LED is on.
  • Page 5 Managing Switch Stacks Stack Member Priority Values As described in the hardware installation guide, you can use the device port LEDs in Stack mode to visually determine the stack member number of each stack member. In the default mode Stack LED will blink in green color only on the active switch. However, when we scroll the Mode button to Stack option - Stack LED will glow green on all the stack members.
  • Page 6 Managing Switch Stacks Switch Stack Bridge ID and MAC Address The new priority value takes effect immediately but does not affect the current active device. The new priority value helps determine which stack member is elected as the new active device when the current active device or the device stack resets.
  • Page 7 Managing Switch Stacks Offline Configuration to Provision a Stack Member uses the system-level configuration of the new switch stack. If the device is powered on as a standalone device before it joins the new switch stack, the stack will reload. When the stack reloads, the new device may become the device, retain its configuration and overwrite the configuration files of the other stack members.
  • Page 8 Managing Switch Stacks Effects of Adding a Provisioned Switch to a Switch Stack Effects of Adding a Provisioned Switch to a Switch Stack When you add a provisioned Device to the switch stack, the stack applies either the provisioned configuration or the default configuration.
  • Page 9 The switches with the same Cisco IOS software version have the same stack protocol version. Such switches are fully compatible, and all features function properly across the switch stack. A device with the same Cisco IOS software version as the active switch can immediately join the switch stack.
  • Page 10 Managing Switch Stacks Switch Stack Management Connectivity which uses the results to determine whether the switch can join the switch stack. If the software on the new switch is incompatible with the switch stack, the new switch enters version-mismatch (VM) mode. If the auto-upgrade feature is enabled on the existing switch stack, the active stack automatically upgrades the new switch with the same software image running on a compatible stack member.
  • Page 11 Managing Switch Stacks How to Configure a Switch Stack Be careful when using multiple CLI sessions to the active switch. Commands that you enter in one session are not displayed in the other sessions. Therefore, it is possible that you might not be able to identify the session from which you entered a command.
  • Page 12 Managing Switch Stacks Enabling the Persistent MAC Address Feature Command or Action Purpose Device(config)# end Step 5 show switch horizontal-stack-ports Verifies the operation status of network ports and stack ports. Example: Device# show switch hstack-ports Step 6 copy running-config startup-config (Optional) Saves your entries in the configuration file.
  • Page 13 Managing Switch Stacks Enabling the Persistent MAC Address Feature SUMMARY STEPS 1. enable 2. configure terminal 3. stack-mac persistent timer [0 | time-value] 4. end 5. copy running-config startup-config DETAILED STEPS Command or Action Purpose Step 1 enable Enables privileged EXEC mode. Example: •...
  • Page 14 Managing Switch Stacks Assigning a Stack Member Number Command or Action Purpose you enter the no stack-mac persistent timer command. If you enter the no stack-mac persistent timer Note command after a new active switch takes over, before the time expires, the switch stack moves to the current active switch MAC address.
  • Page 15 Managing Switch Stacks Setting the Stack Member Priority Value Command or Action Purpose Device> enable Step 2 configure terminal Enters global configuration mode. Example: Device# configure terminal Step 3 switch current-stack-member-number renumber Specifies the current stack member number and the new stack member number for the stack member.
  • Page 16 Managing Switch Stacks Provisioning a New Member for a Switch Stack 4. copy running-config startup-config DETAILED STEPS Command or Action Purpose Step 1 enable Enables privileged EXEC mode. Enter your password if prompted. Example: Device enable Step 2 switch stack-member-number priority new-priority-number Specifies the stack member number and the new priority for the stack member.
  • Page 17 Managing Switch Stacks Removing Provisioned Switch Information DETAILED STEPS Command or Action Purpose Step 1 show switch Displays summary information about the switch stack. Example: Device# show switch Step 2 configure terminal Enters global configuration mode. Example: configure terminal Device# Step 3 switch stack-member-number provision type Specifies the stack member number for the preconfigured...
  • Page 18 Managing Switch Stacks Troubleshooting the Switch Stack DETAILED STEPS Command or Action Purpose Step 1 configure terminal Enters global configuration mode. Example: Device# configure terminal Step 2 no switch stack-member-number provision Removes the provisioning information for the specified member. Example: Device(config)# no switch 3 provision Step 3 Returns to privileged EXEC mode.
  • Page 19 Managing Switch Stacks Reenabling a Stack Port While Another Member Starts Note Be careful when using the switch stack-member-number stack port port-number disable command. When you disable the stack port, the stack operates at half bandwidth. A stack is in the full-ring state when all members are connected through the stack ports and are in the ready state.
  • Page 20 Managing Switch Stacks Monitoring the Device Stack Step 1 Disconnect the stack cable between Port 1 on Switch 1 and Port 2 on Switch 4. Step 2 Remove Switch 4 from the stack. Step 3 Add a switch to replace Switch 4 and assign it switch-number 4. Step 4 Reconnect the cable between Port 1 on Switch 1 and Port 2 on Switch 4 (the replacement switch).
  • Page 21 Managing Switch Stacks Configuration Examples for Switch Stacks Configuration Examples for Switch Stacks Switch Stack Configuration Scenarios Most of these switch stack configuration scenarios assume that at least two device are connected through their ports. Table 4: Configuration Scenarios Scenario Result Active switch election Connect two powered-on switch stacks...
  • Page 22 Managing Switch Stacks Enabling the Persistent MAC Address Feature: Example Scenario Result Stack member number Assuming that one stack member has a The stack member with the higher conflict higher priority value than the other stack priority value retains its stack member: member number.
  • Page 23 Managing Switch Stacks Provisioning a New Member for a Switch Stack: Example Mac persistency wait time: 7 mins Current Switch# Role Mac Address Priority Version State ---------------------------------------------------------- Master 0016.4727.a900 Ready Provisioning a New Member for a Switch Stack: Example This example shows how to provision a switch with a stack member number of 2 for the switch stack. The show running-config command output shows the interfaces associated with the provisioned switch: Configuring a Network Port into a Stack Port: Examples The following example shows how to convert a network port to stack port.
  • Page 24 N/W Port Fiber Additional References for Switch Stacks Related Documents Related Topic Document Title Cabling and powering on a switch stack. http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960cx_ 3650cx/hardware/installation/guide/b_2960cx-3560cx_hig.html Error Message Decoder Description Link To help you research and resolve system https://www.cisco.com/cgi-bin/Support/Errordecoder/index.cgi error messages in this release, use the Error Message Decoder tool.
  • Page 25 Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password. Managing Switch Stacks...
  • Page 26 Managing Switch Stacks Additional References for Switch Stacks Managing Switch Stacks...

This manual is also suitable for:

Catalyst ws-c3560cx-12pd-sCatalyst ws-c3560cx-8xpd-s

Table of Contents