Cisco Cisco IOS Software Release 12.2(52)SE

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Release Notes for the Cisco ME 2400 Ethernet Access Switch, Cisco IOS Release 12.2(52)SE
OL-19723-01
Limitations and Restrictions
Limitations and Restrictions
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.
Support for Network Edge Access Topology (NEAT) to change the port host mode and to apply 
a standard port configuration on the authenticator switch port.
12.2(52)SE
Support for 3DES and AES with version 3 of the Simple Network Management Protocol 
(SNMPv3). This release adds support for the 168-bit Triple Data Encryption Standard (3DES) 
and the 128-bit, 192-bit, and 256-bit Advanced Encryption Standard (AES) encryption 
algorithms to SNMPv3.
12.2(52)SE
Support for including a hostname in the option 12 field of DHCPDISCOVER packets. This 
provides identical configuration files to be sent by using the DHCP protocol.
12.2(52)SE
DHCP snooping enhancement to support the selection of a fixed string-based format for the cir-
cuit-id sub-option of the Option 82 DHCP field.
12.2(52)SE
NEAT with 802.1X switch supplicant, host authorization with CISP, and auto enablement 
12.2(50)SE 
CPU utilization threshold trap 
12.2(50)SE
RADIUS server load balancing
12.2(50)SE
IP source guard 
12.2(50)SE 
Dynamic ARP inspection 
12.2(50)SE 
DHCP server port-based address allocation
12.2(46)SE
DHCP-based autoconfiguration and image update
12.2(44)SE
Configurable small-frame arrival threshold
12.2(44)SE
Support for the *, ip-addressinterface interface-id, and vlan vlan-id keywords with the clear 
ip dhcp snooping
 command
12.2(44)SE
IEEE 802.1x readiness check
12.2(44)SE
Configurable control plane security (support for ENIs)
12.2(44)SE
Configuration rollback and replacement
12.2(40)SE
IP SLAs responder support 
12.2(40)SE
LLDP and LLDP-MED
12.2(37)SE
Port security on a PVLAN host
12.2(37)SE
Support for Multicast VLAN Registration (MVR) over trunk ports
12.2(35)SE1
DHCP server
12.2(25)SEG
DHCP Option-82 configurable remote ID and circuit ID
12.2(25)SEG
Multiple spanning-tree (MST) based on the IEEE 802.1s standard
12.2(25)SEG
Secure Copy Protocol
12.2(25)SEG
Table 3
Features Introduced After the First Release and the Minimum Cisco IOS Release Required (continued)
Feature
Minimum Cisco IOS Release 
Required