Cisco Cisco IOS XE 3.5E Release Notes

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Release Notes for the Catalyst 4500-E Series Switch, Cisco IOS XE Release 3.8.xE
Upgrading the System Software
Upgrading the System Software
For details on how to upgrade ROMMON, refer to:
Follow these guidelines:
If you are upgrading to Cisco IOS XE Release 3.8.1E and using Supervisor Engine 8L-E, you must 
upgrade to ROMMON 15.1(1r)SG6 before upgrading the IOS-XE image to 3.8.1E or newer 
versions.
If you are upgrading to Cisco IOS XE Release 3.8.xE and plan to use VSS, you must upgrade your 
ROMMON to version 15.0(1r)SG10. Otherwise, you must upgrade your ROMMON to at least 
Version 15.0(1r)SG2.
If you are upgrading to Cisco IOS XE Release 3.8.xE and using Supervisor Engine 7-E or 7L-E, you 
must use ROMMON version 15.0(1r)SG10 or a higher version (if available).
If you are upgrading to Cisco IOS XE Release 3.8.0E and using Supervisor Engine 8-E, you must 
use ROMMON version 15.1(1r) SG5 or later, version or a higher version (if available).
Note
If dual supervisor engines are present, first upgrade your software to Cisco IOS XE 3.2.0SG 
or higher, then upgrade your ROMMON to version 15.0(1r)SG7 to avoid an uplinks issue 
(CSCtj54375).
Identifying Hardware Revisions on the Switch Chassis
The hardware revision is a number that represents a hardware upgrade. Enter the show idprom chassis 
privileged EXEC command on the switch chassis to know its current revision number 
Some chassis require a certain hardware revision to be operable with certain devices. For example, the 
Cisco Catalyst 4507R-E Switch chassis must have hardware revision 2.0 or higher to support Supervisor 
Engine 8-E or 8L-E. Before you install Supervisor Engine 8-E or 8L-E on the Catalyst 4507R-E Switch 
chassis, verify that the chassis has the required revision number.
The following is a sample output of the show idprom chassis command on a Catalyst 4507R-E Switch. 
Note the “
Hardware Revision
” field here is “
2.0
”:
Switch# show idprom chassis
Chassis Idprom :
 Common Block Signature = 0xABAB
 Common Block Version = 3
 Common Block Length = 144
 Common Block Checksum = 3874
 Idprom Size = 256
 Block Count = 4
 FRU Major Type = 0x4001
 FRU Minor Type = 52
 OEM String = Cisco
 Product Number = WS-C4507R-E
 Serial Number = FOX1224G5ZH
 Part Number = 73-9975-04
 Part Revision = D0
 Manufacturing Deviation String =
 Hardware Revision = 2.0
 Top Assembly Number = 800-26494-01
 Top Assembly Revision Number = D0
<output truncated>