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4510 Switch#redundancy force-switchover dropping clients.

We recently setup our new 4510 chassis and I'm having issues with the redunant supervisors not being redundant.

I'm under the assumption that switching between SUPs during IOS upgrades should be seamless and not drop the network connections?

This is the upgrade link I've been following: http://www.cisco.com/en/US/products/hw/switches/ps663/products_configuration_example09186a00801461ef.shtml#task4

Everything works fine until I force a switch over. At that point the switch drops all connections for approx 30 seconds.

Here are some of the settings on my chassis:

4510#sh redundancy

Redundant System Information :

------------------------------

       Available system uptime = 1 week, 6 days, 19 hours, 39 minutes

Switchovers system experienced = 3

              Standby failures = 0

        Last switchover reason = user_forced

                 Hardware Mode = Duplex

    Configured Redundancy Mode = Stateful Switchover

     Operating Redundancy Mode = Stateful Switchover

              Maintenance Mode = Disabled

                Communications = Up

Current Processor Information :

------------------------------

               Active Location = slot 6

        Current Software state = ACTIVE

       Uptime in current state = 1 hour, 4 minutes

                 Image Version = Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSALK9-M), Version 03.02.04.SG RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2012 by Cisco Systems, Inc.

Compiled Mon 19-Mar-12 16:17 by prod

               BOOT = bootflash:cat4500e-universalk9.SPA.03.02.04.SG.150-2.SG4.bin,1;

        Configuration register = 0x2

Peer Processor Information :

------------------------------

              Standby Location = slot 5

        Current Software state = STANDBY HOT

       Uptime in current state = 1 hour, 1 minute

                 Image Version = Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSALK9-M), Version 03.02.04.SG RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2012 by Cisco Systems, Inc.

Compiled Mon 19-Mar-12 16:17 by pr

               BOOT = bootflash:cat4500e-universalk9.SPA.03.02.04.SG.150-2.SG4.bin,1;

        Configuration register = 0x2

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

4510#show module 5

Mod Ports Card Type                              Model              Serial No.

---+-----+--------------------------------------+------------------+-----------

5     4  Sup 7-E 10GE (SFP+), 1000BaseX (SFP)   WS-X45-SUP7-E      CAT1545L0EH

M MAC addresses                    Hw  Fw           Sw               Status

--+--------------------------------+---+------------+----------------+---------

5 2894.0f2a.2680 to 2894.0f2a.2683 2.0 15.0(1r)SG5  03.02.04.SG      Ok

Mod  Redundancy role     Operating mode      Redundancy status

----+-------------------+-------------------+----------------------------------

5   Standby Supervisor  SSO                 Standby hot

4510-BPS#show module 6

Mod Ports Card Type                              Model              Serial No.

---+-----+--------------------------------------+------------------+-----------

6     4  Sup 7-E 10GE (SFP+), 1000BaseX (SFP)   WS-X45-SUP7-E      CAT1545L0DC

M MAC addresses                    Hw  Fw           Sw               Status

--+--------------------------------+---+------------+----------------+---------

6 2894.0f2a.2684 to 2894.0f2a.2687 2.0 15.0(1r)SG5  03.02.04.SG      Ok

Mod  Redundancy role     Operating mode      Redundancy status

----+-------------------+-------------------+----------------------------------

6   Active Supervisor   SSO                 Active

Should I exect this unit to stay up during a switchover? Thanks.

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