Contents

1   Introduction

This Operational Instruction describes the replacement of the Extreme switch. The document is valid for X460 switches.

1.1   Prerequisites

This section provides information on the documents, tools and conditions that apply to the procedure.

1.1.1   Documents

Before starting this procedure, ensure that you have read the following documents:

• Personal Health and Safety Information
• System Safety Information

The following documents are used in the procedure:

• The installation documentation provided by the manufacturer of the switch:
  • Summit Family Hardware Installation Guide
  • Pluggable Hardware Installation Guide

  Refer to the Extreme support documentation at Extreme Networks Partner web for Ericsson (extranet), Reference [1].

• Extreme X460 Configuration
• SW Installation in Multi-Server Deployment
• SW Installation in Single Server Deployment

The address variables are summarized in the table below. For more information, refer to the IP and VLAN plan, Reference [2].

Network/VLAN	IPv4 Address Variable
sw_ctrl_vip	<control_switch_a_static_ip>
sw_ctrl_vip	<control_switch_b_static_ip>

1.1.2   Conditions

Before starting this procedure, ensure that the following conditions are met:

• Two people are available for the operations. The procedure requires two people to maneuver the switch, and to attach the mounting hardware.
• A replacement switch is available. The replacement switch is of the same type as the one that is to be removed and it has been verified visually that the new switch is undamaged.
• The CEE region name for the replacement switch is known.
• All keys are available and site access is granted.
• A work order is received, or this instruction is referred from another instruction.
• The Extreme switch admin user password is known.

1.1.3   Tools and Equipment

Ensure that the following tools and equipment available:

• A Torx T30 screwdriver or a torque wrench with a T30 bit
• A Phillips screwdriver
• A flat-head screwdriver
• An Electrostatic Discharge (ESD) wrist strap (part number LYB 250 01/14)
• Thermal protective gloves for the removal of the power supplies
• Cable straps
• Side cutting pliers
• An RJ45-to-RS-232 adapter cable for console connection
• A USB-to-RS-232 adapter cable for console connection
• Two cat6 Ethernet cables:
  • One for console connection through the two mentioned adapters
  • One to be connected directly to the management port

2   Procedure

The procedure contains the following activities:

1. Removal of the faulty switch from the cabinet, see Section 2.1
2. Hardware installation of the replacement switch in the cabinet, see Section 2.2
3. Software upgrade and initial configuration, see Section 2.3

2.1   Removal of the Faulty Switch

Do the following to remove the faulty switch from the cabinet:

1. Inform the Operation and Maintenance Center (OMC) that work is in progress on the node, with possible disturbance to the service.

2. Verify that the device status has changed to maintenance. Contact the next level of support if the device status does not change.
3. Open the door of the cabinet housing the switch to be replaced.
4. Locate the switch to be replaced. Confirm that the switch is identical with the one specified in the work order.
5. Put the ESD wrist strap on your wrist and connect the cable to the grounding point.

6. Switch off the circuit breakers feeding the two power supplies in the switch.
7. Note down the positions and connections of cables and Small Form-Factor Pluggable (SFP) modules at the faulty switch. This information is needed when installing the new replacement switch.
8. Using the side cutting pliers, cut and remove any securing cable straps that obstruct the disconnection of the switch cables or the removal of the switch.

9. Disconnect the optical data cables from the SFP modules of the switch.

   Note:  

   When disconnecting optical cables, pull the connector body directly from the SFP module socket. Take care not to apply lateral or vertical forces to the connector. Do not touch the tip of the connector.

   
   

   Note:  

   Handle the optical cables with care to prevent damage. Never bend the optical cables sharper than the manufacturer-specified minimum bend radius. Never bend the optical cables near a connector strain relief boot, nor over a sharp edge. Bundle the optical cables loosely using cable straps.

   
   
10. Remove the SFP modules as described in the Pluggable Hardware Installation Guide provided by the manufacturer of the switch, refer to Reference [1]. The SFP modules are reused in the replacement switch.

    Note:  

    Use protective caps on the SFP modules when optical cables are not connected to them.

    
    
11. Disconnect the console cables if connected.
12. For complete removal of the switch, follow the instructions in the Summit Family Hardware Installation Guide provided by the manufacturer of the switch, refer to Reference [1].

    Note:  

    This step includes disconnecting the cables from the power supplies. The power supplies are then removed from the switch. The grounding cable is disconnected from the grounding stud at the front of the switch, and then the switch can be removed from the cabinet.

    
    

    Note:  

    The screws fastening the switch to the cabinet can be removed by using a Torx T30 screwdriver.

    
    

    Note:  

    Do not wear an ESD wrist strap when disconnecting or connecting power supply cables. This is to avoid electrical shock, if there is a damaged power supply cable or cable connector.

    
    
13. When the faulty switch is removed from the cabinet, remove the mounting brackets from both sides of the switch. Figure 1 shows the removal from one side.
    1. Remove the long slider brackets by pulling them off the switch.
    2. Remove the shorter brackets by removing the fastening screws using a Phillips screwdriver.

Note:  

The mounting brackets and the screws are reused for the replacement switch.

14. Continue with Section 2.2.

2.2   Hardware Installation of the Replacement Switch

Do the following:

1. Note down the serial number of the new switch.
2. Install the mounting brackets on the replacement switch.
   • Fix the shorter brackets to the switch with the screws using the Phillips screwdriver.
   • Install the long slider brackets by sliding them between the two rows of pegs on the sides of the switch.
3. Install the replacement switch in the cabinet by following the instructions in the Summit Family Hardware Installation Guide provided by the manufacturer of the switch, refer to Reference [1].

   Note:  

   This step includes the mounting of the switch in the cabinet. The grounding cable is then connected to the grounding stud at the front of the switch. The power supplies are installed in the switch, and then the cables are connected to the power supplies.

   
   

   Note:  

   Use a torque wrench with a Torx T30 bit to tighten the screws fastening the switch to the cabinet. Tightening torque is 10 Nm.

   
   

   Note:  

   Do not wear an ESD wrist strap when disconnecting or connecting power supply cables. This is to avoid electrical shock, if there is a damaged power supply cable or cable connector.

   
   
4. Put back the ESD wrist strap on your wrist and ensure that the cable is connected to the grounding point.
5. Install the SFP modules in the positions noted down before the removal in Step 7 in Section 2.1. Refer to the Pluggable Hardware Installation Guide provided by the manufacturer of the switch, Reference [1].

6. Connect the optical data cables to the new switch in the positions noted down before the removal in Step 7 in Section 2.1.

   Note:  

   When connecting optical cables, hold the connector body, gently push the connector directly into the socket on the switch or SFP module. Do not touch the tip of the connector.

   
   

   Note:  

   Handle the optical cables with care to prevent damage. Never bend the optical cables sharper than the manufacturer-specified minimum bend radius. Never bend the optical cables near a connector strain relief boot, nor over a sharp edge. Bundle the optical cables loosely using cable straps.

   
   
7. Switch on the circuit breakers that feed the two power supplies of the switch.
8. Continue with Section 2.3.

2.3   Software Upgrade and Initial Configuration

1. Use the Extreme X460 Configuration installation instruction, section Configuration of Switch, to perform the software upgrade and initial configuration for the replacement switch.
2. Continue with Section 2.4.

2.4   Conclude Replacement

Do the following:

1. If any cable straps were cut, secure the cable bundles using new cable straps.
2. If a local management tool is used, disconnect the tool.
3. If the faulty switch is not yet packed, pack it using the packing material of the replacement switch.
4. Disconnect the ESD wrist strap from your wrist and, if necessary, from the cabinet grounding point.
5. Collect all tools and equipment.
6. Close the cabinet door and lock it if needed.
7. Report that the switch has been changed.
8. Carry out any remaining actions according to the work order, if applicable.
9. Follow the procedure for the return and disposal of the replacement parts.
10. The job is completed.

Reference List

[1] Extreme Support Documentation, http://www.extremenetworks.com/partners/partners-hub.aspx.
[2] IP and VLAN plan, 2/102 62-CRA 119 1862/5 Uen