Cisco Cisco IOS Software Release 12.2(55)SE

You should review this section before you begin working with the switch. These are known limitations 
that will not be fixed, and there is not always a workaround. Some features might not work as 
documented, and some features could be affected by recent changes to the switch hardware or software.

Layer 2 point-to-point tunneling and Layer 2 point-to-point 
tunneling bypass

12.2(25)SE

3750, 3560

SSL version 3.0 for secure HTTP communication (cryptographic 
images only)

12.2(25)SE
12.2(25)FX

3750, 3560, 2960

Private-VLAN ports on interfaces that are configured for dynamic 
ARP inspection (IP services image only)

12.2(25)SE

3750, 3560

IP source guard on private VLANs (IP services image only)

12.2(25)SE

3750, 3560

Cisco intelligent power management 

12.2(25)SE

3750, 3560

IEEE 802.1x accounting and MIBs (IEEE 8021-PAE-MIB and 
CISCO-PAE-MIB)

12.2(20)SE
12.2(25)FX

3750, 3560, 2960

Dynamic ARP inspection

12.2(20)SE

3750, 3560

Flex Links

12.2(20)SE
12.2(25)FX

3750, 3560, 2960

Software upgrade (device manager or Network Assistant only)

12.2(20)SE
12.2(25)FX

3750, 3560, 2960

IP source guard

12.2(20)SE

3750, 3560

Private VLAN (IP services image only)

12.2(20)SE

3750, 3560

SFP module diagnostic management interface

12.2(20)SE
12.2(25)FX

3750, 3560, 2960

Switch stack offline configuration

12.2(20)SE

3750

Stack-ring activity statistics

12.2(20)SE

3750

Smartports macros

12.2(18)SE
12.2(25)FX

3750, 3560, 2960

Generic online diagnostics (GOLD)

12.2(25)SEE

3750

Flex Links Preemptive Switchover

12.2(25)SEE

3750, 3560, 2960

1.

QoS = quality of service

2.

SVIs = switched virtual interfaces