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Core Switch 4510 Swap Secondary Supervisor to another Core Switch



I have a core switch which has two supervisors as shown below:


#show module
Chassis Type : WS-C4510R+E

Power consumed by backplane : 40 Watts

Mod Ports Card Type Model Serial No.
1 12 10GE SFP+ WS-X4712-SFP+E CAT1537L02S
2 48 10/100/1000BaseT POE E Series WS-X4648-RJ45V-E JAE15390CJY
3 12 10GE SFP+ WS-X4712-SFP+E CAT1537L02D
5 4 Sup 7-E 10GE (SFP+), 1000BaseX (SFP) WS-X45-SUP7-E CAT1538L0TZ
6 4 Sup 7-E 10GE (SFP+), 1000BaseX (SFP) WS-X45-SUP7-E CAT1538L0UQ
9 48 10/100/1000BaseT (RJ45)V, Cisco/IEEE WS-X4548-GB-RJ45V JAE14440IEB

M MAC addresses Hw Fw Sw Status
1 4055.39e0.935c to 4055.39e0.9367 1.1 Ok
2 7081.05d6.31d0 to 7081.05d6.31ff 2.0 Ok
3 4055.39e0.932c to 4055.39e0.9337 1.1 Ok
5 ccef.481d.c740 to ccef.481d.c743 1.0 15.0(1r)SG2 03.02.00.SG Ok
6 ccef.481d.c744 to ccef.481d.c747 1.0 15.0(1r)SG2 03.02.00.SG Ok
9 c471.fe00.4710 to c471.fe00.473f 5.1 Ok

Mod Redundancy role Operating mode Redundancy status
5 Standby Supervisor SSO Standby hot
6 Active Supervisor SSO Active

System Failures:
Power Supply: bad/off (see 'show power')



I need to remove the secondary Supervisor to another core switch which is the same model, in order for the two Cores to have the same Supervisor and  configure VSS since now the customer has SPOF with his core switch. 


The Core Switch OS is below:


RUH-DR#show version
Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSAL-M), Version 03.02.00.SG RELEASE SOFTWARE (fc4)
Technical Support:
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Tue 26-Apr-11 18:09 by prod_rel_team


Cisco IOS-XE software, Copyright (c) 2005-2010 by cisco Systems, Inc.
All rights reserved. Certain components of Cisco IOS-XE software are
licensed under the GNU General Public License ("GPL") Version 2.0. The
software code licensed under GPL Version 2.0 is free software that comes
with ABSOLUTELY NO WARRANTY. You can redistribute and/or modify such
GPL code under the terms of GPL Version 2.0. For more details, see the
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE


Image text-base: 0x100A0994, data-base: 0x13CAB728

ROM: 15.0(1r)SG2
Jawa Revision 7, Snowtrooper Revision 0x0.0x116

BUPA-RUH-DR uptime is 1 year, 2 weeks, 4 days, 11 hours, 38 minutes
Uptime for this control processor is 1 year, 2 weeks, 4 days, 11 hours, 40 minutes
System returned to ROM by redundancy reset
System restarted at 02:02:29 KSA Fri Apr 7 2017
Running default software

License Information for 'WS-X45-SUP7-E'
License Level: ipbase Type: Permanent
Next reboot license Level: ipbase

cisco WS-C4510R+E (MPC8572) processor (revision 8) with 2097152K/20480K bytes of memory.
Processor board ID FOX1539G9WE
MPC8572 CPU at 1.5GHz, Supervisor 7
Last reset from Reset by peer
16 Virtual Ethernet interfaces
96 Gigabit Ethernet interfaces
32 Ten Gigabit Ethernet interfaces
511K bytes of non-volatile configuration memory.

Configuration register is 0x2101






I knew that VSS isn't supported by the recent versions of OS and Rommon based on the below:

Virtual switching system (VSS) can enable on Catalyst 4500/4500X series switch (Supervisor Engine 7-E, Supervisor Engine 7L-E, and Catalyst 4500-X). Cisco IOS XE 3.4.0SG and ROMMON IOS Version 15.0(1r) SG7 later released support VSS. This document discuss about Cisco 4500 SUP7-E ROMMON upgrade.



My questions that I need help with are the following:


1- What is the recommended way to remove the secondary supervisor and plug it into the other core switch. Shall i turn off the power of the core and then remove it and plug it to the other one. Or i can remove while the core is powered on and avoid downtime, is this possible without the secondary supervisor crashing. 


2- The minimum for OS and Rommon to support VSS is Cisco IOS XE 3.4.0SG and ROMMON IOS Version 15.0(1r) SG7. However, the recommended OS for the supervisor on Cisco website is Release 3.6.7E MD.

Shall I upgrade to 3.4.0 and 15.0(1r)SG7 or go with the recommended 3.6.7E, If I do it, can I directly jump from ROM: 15.0(1r)SG2 to 15.0(1r)SG7  and from 3.2.0SG to 3.6.7E or there is middle steps. Is there any good posts to show how to do the upgrades



I really appreciate any helpful feedbacks or advice from your experiences.

Diana Karolina Rojas
VIP Advocate



I thing 4500 switches support are hot swappble, so you can add or remove cards to switch while it is running. 


"The redundancy scheme using the Supervisor Engine V is similar to that for the Supervisor Engine IV. Alerts are generated to the network monitoring software if either supervisor fails, and hot swapping of supervisors is supported without disrupting system operation. Switchover of supervisors can be forced by software, or by the user via Simple Network Management Protocol (SNMP). The resiliency features of the Cisco Catalyst 4500 Series prevent network outages that could result in lost business and revenue."


And I thing you can upgrade to 3.6.7, but firts you have to upgrade the rommon image form the suppervisor 


"For IOS XE Release 3.6.0E, the ROMMON image must be upgraded to use the 3.6.0XE image (15.1(1r)SG4). The IOS XE Bundle format for Supervisor Engine 8-E has changed, necessitating a new ROMMON image." Read all the related notes firts and after you can do the upgrade.


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Best Regards,